./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_09-arraylist.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_4e931336-a3ef-492b-b584-968bad081358/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e931336-a3ef-492b-b584-968bad081358/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_4e931336-a3ef-492b-b584-968bad081358/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e931336-a3ef-492b-b584-968bad081358/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_09-arraylist.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e931336-a3ef-492b-b584-968bad081358/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_4e931336-a3ef-492b-b584-968bad081358/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 bbb47797d2c6a4d5e961c4dfd7a8e6f4ff79c632e04c289068b1b9e8cca736fa --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:46:08,482 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:46:08,551 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e931336-a3ef-492b-b584-968bad081358/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 10:46:08,557 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:46:08,558 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:46:08,583 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:46:08,584 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:46:08,585 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:46:08,586 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:46:08,586 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:46:08,587 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:46:08,587 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:46:08,588 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:46:08,589 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:46:08,590 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:46:08,590 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:46:08,591 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:46:08,592 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:46:08,592 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:46:08,593 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:46:08,593 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:46:08,594 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:46:08,595 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:46:08,595 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:46:08,596 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 10:46:08,596 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 10:46:08,597 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:46:08,597 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:46:08,598 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:46:08,599 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:46:08,599 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:46:08,600 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:46:08,600 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:46:08,601 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:46:08,601 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:46:08,601 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:46:08,602 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:46:08,602 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:46:08,602 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:46:08,603 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:46:08,603 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:46:08,603 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:46:08,603 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:46:08,604 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:46:08,604 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_4e931336-a3ef-492b-b584-968bad081358/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e931336-a3ef-492b-b584-968bad081358/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bbb47797d2c6a4d5e961c4dfd7a8e6f4ff79c632e04c289068b1b9e8cca736fa [2023-11-26 10:46:08,849 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:46:08,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:46:08,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:46:08,885 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:46:08,886 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:46:08,887 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e931336-a3ef-492b-b584-968bad081358/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/goblint-regression/09-regions_09-arraylist.i [2023-11-26 10:46:09,750 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:46:14,660 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:46:14,661 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e931336-a3ef-492b-b584-968bad081358/sv-benchmarks/c/goblint-regression/09-regions_09-arraylist.i [2023-11-26 10:46:14,689 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e931336-a3ef-492b-b584-968bad081358/bin/uautomizer-verify-VRDe98Ueme/data/2825eccf3/7dd1166af7bd42dcb30f175a11a9b168/FLAG04800372e [2023-11-26 10:46:14,714 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e931336-a3ef-492b-b584-968bad081358/bin/uautomizer-verify-VRDe98Ueme/data/2825eccf3/7dd1166af7bd42dcb30f175a11a9b168 [2023-11-26 10:46:14,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:46:14,725 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:46:14,727 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:46:14,727 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:46:14,734 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:46:14,735 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:46:14" (1/1) ... [2023-11-26 10:46:14,738 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4aba35d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:14, skipping insertion in model container [2023-11-26 10:46:14,738 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:46:14" (1/1) ... [2023-11-26 10:46:14,827 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:46:15,590 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:46:15,607 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:46:15,678 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:46:15,863 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:46:15,863 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:15 WrapperNode [2023-11-26 10:46:15,864 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:46:15,865 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:46:15,865 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:46:15,866 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:46:15,874 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:15" (1/1) ... [2023-11-26 10:46:15,908 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:15" (1/1) ... [2023-11-26 10:46:15,946 INFO L138 Inliner]: procedures = 372, calls = 37, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 129 [2023-11-26 10:46:15,946 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:46:15,947 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:46:15,947 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:46:15,948 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:46:15,965 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:15" (1/1) ... [2023-11-26 10:46:15,965 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:15" (1/1) ... [2023-11-26 10:46:15,993 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:15" (1/1) ... [2023-11-26 10:46:16,020 INFO L175 MemorySlicer]: Split 25 memory accesses to 4 slices as follows [14, 5, 5, 1]. 56 percent of accesses are in the largest equivalence class. The 5 initializations are split as follows [0, 5, 0, 0]. The 13 writes are split as follows [10, 0, 2, 1]. [2023-11-26 10:46:16,020 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:15" (1/1) ... [2023-11-26 10:46:16,021 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:15" (1/1) ... [2023-11-26 10:46:16,041 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:15" (1/1) ... [2023-11-26 10:46:16,045 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:15" (1/1) ... [2023-11-26 10:46:16,049 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:15" (1/1) ... [2023-11-26 10:46:16,052 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:15" (1/1) ... [2023-11-26 10:46:16,062 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:46:16,063 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:46:16,063 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:46:16,064 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:46:16,065 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:15" (1/1) ... [2023-11-26 10:46:16,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:46:16,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e931336-a3ef-492b-b584-968bad081358/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:46:16,102 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e931336-a3ef-492b-b584-968bad081358/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:46:16,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e931336-a3ef-492b-b584-968bad081358/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:46:16,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 10:46:16,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-26 10:46:16,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-26 10:46:16,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-26 10:46:16,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-26 10:46:16,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 10:46:16,155 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-26 10:46:16,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 10:46:16,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 10:46:16,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 10:46:16,158 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 10:46:16,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 10:46:16,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 10:46:16,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 10:46:16,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 10:46:16,160 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-26 10:46:16,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 10:46:16,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:46:16,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-26 10:46:16,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-26 10:46:16,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-26 10:46:16,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-26 10:46:16,163 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-26 10:46:16,163 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-26 10:46:16,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:46:16,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 10:46:16,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 10:46:16,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 10:46:16,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:46:16,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:46:16,168 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 10:46:16,396 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:46:16,399 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:46:16,790 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:46:17,217 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:46:17,217 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 10:46:17,218 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:46:17 BoogieIcfgContainer [2023-11-26 10:46:17,218 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:46:17,223 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:46:17,224 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:46:17,228 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:46:17,228 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:46:14" (1/3) ... [2023-11-26 10:46:17,230 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@483b2364 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:46:17, skipping insertion in model container [2023-11-26 10:46:17,230 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:15" (2/3) ... [2023-11-26 10:46:17,232 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@483b2364 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:46:17, skipping insertion in model container [2023-11-26 10:46:17,233 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:46:17" (3/3) ... [2023-11-26 10:46:17,234 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_09-arraylist.i [2023-11-26 10:46:17,245 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 10:46:17,259 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:46:17,259 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-26 10:46:17,260 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 10:46:17,319 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 10:46:17,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 22 places, 19 transitions, 42 flow [2023-11-26 10:46:17,416 INFO L124 PetriNetUnfolderBase]: 1/18 cut-off events. [2023-11-26 10:46:17,416 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:46:17,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22 conditions, 18 events. 1/18 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 7. Up to 2 conditions per place. [2023-11-26 10:46:17,420 INFO L82 GeneralOperation]: Start removeDead. Operand has 22 places, 19 transitions, 42 flow [2023-11-26 10:46:17,423 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 6 places, 6 transitions, 12 flow [2023-11-26 10:46:17,438 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:46:17,450 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;@5fda36e5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:46:17,451 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-26 10:46:17,458 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 10:46:17,458 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-26 10:46:17,458 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:46:17,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:46:17,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-26 10:46:17,460 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-26 10:46:17,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:17,467 INFO L85 PathProgramCache]: Analyzing trace with hash 366441, now seen corresponding path program 1 times [2023-11-26 10:46:17,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:17,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066123421] [2023-11-26 10:46:17,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:17,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:17,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:18,104 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 10:46:18,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:18,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066123421] [2023-11-26 10:46:18,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066123421] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:18,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:18,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:46:18,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520889897] [2023-11-26 10:46:18,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:18,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:46:18,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:18,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:46:18,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:46:18,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 19 [2023-11-26 10:46:18,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 6 places, 6 transitions, 12 flow. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 10:46:18,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:46:18,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 19 [2023-11-26 10:46:18,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:46:18,368 INFO L124 PetriNetUnfolderBase]: 1/9 cut-off events. [2023-11-26 10:46:18,369 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:46:18,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18 conditions, 9 events. 1/9 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 1/9 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2023-11-26 10:46:18,370 INFO L140 encePairwiseOnDemand]: 14/19 looper letters, 4 selfloop transitions, 3 changer transitions 0/8 dead transitions. [2023-11-26 10:46:18,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 9 places, 8 transitions, 30 flow [2023-11-26 10:46:18,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:46:18,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:46:18,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2023-11-26 10:46:18,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2236842105263158 [2023-11-26 10:46:18,387 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 17 transitions. [2023-11-26 10:46:18,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 17 transitions. [2023-11-26 10:46:18,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:46:18,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 17 transitions. [2023-11-26 10:46:18,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 10:46:18,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 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 10:46:18,396 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 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 10:46:18,399 INFO L175 Difference]: Start difference. First operand has 6 places, 6 transitions, 12 flow. Second operand 4 states and 17 transitions. [2023-11-26 10:46:18,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 9 places, 8 transitions, 30 flow [2023-11-26 10:46:18,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 9 places, 8 transitions, 30 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 10:46:18,404 INFO L231 Difference]: Finished difference. Result has 11 places, 8 transitions, 34 flow [2023-11-26 10:46:18,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=12, PETRI_DIFFERENCE_MINUEND_PLACES=6, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=34, PETRI_PLACES=11, PETRI_TRANSITIONS=8} [2023-11-26 10:46:18,412 INFO L281 CegarLoopForPetriNet]: 6 programPoint places, 5 predicate places. [2023-11-26 10:46:18,412 INFO L495 AbstractCegarLoop]: Abstraction has has 11 places, 8 transitions, 34 flow [2023-11-26 10:46:18,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 10:46:18,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:46:18,413 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-26 10:46:18,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 10:46:18,414 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-26 10:46:18,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:18,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1967900265, now seen corresponding path program 1 times [2023-11-26 10:46:18,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:18,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367006378] [2023-11-26 10:46:18,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:18,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:18,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:18,770 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 10:46:18,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:18,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367006378] [2023-11-26 10:46:18,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367006378] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:46:18,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758194003] [2023-11-26 10:46:18,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:18,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:18,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e931336-a3ef-492b-b584-968bad081358/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:46:18,776 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e931336-a3ef-492b-b584-968bad081358/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:46:18,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e931336-a3ef-492b-b584-968bad081358/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 10:46:19,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:19,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 10:46:19,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:46:19,252 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 10:46:19,253 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:46:19,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758194003] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:19,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:46:19,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2023-11-26 10:46:19,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087547764] [2023-11-26 10:46:19,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:19,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:46:19,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:19,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:46:19,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:46:19,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 19 [2023-11-26 10:46:19,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 11 places, 8 transitions, 34 flow. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 10:46:19,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:46:19,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 19 [2023-11-26 10:46:19,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:46:19,359 INFO L124 PetriNetUnfolderBase]: 1/8 cut-off events. [2023-11-26 10:46:19,359 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:46:19,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 8 events. 1/8 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 1/8 useless extension candidates. Maximal degree in co-relation 11. Up to 5 conditions per place. [2023-11-26 10:46:19,367 INFO L140 encePairwiseOnDemand]: 15/19 looper letters, 2 selfloop transitions, 5 changer transitions 0/7 dead transitions. [2023-11-26 10:46:19,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 13 places, 7 transitions, 44 flow [2023-11-26 10:46:19,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:46:19,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:46:19,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2023-11-26 10:46:19,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.13157894736842105 [2023-11-26 10:46:19,371 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 10 transitions. [2023-11-26 10:46:19,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 10 transitions. [2023-11-26 10:46:19,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:46:19,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 10 transitions. [2023-11-26 10:46:19,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10:46:19,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 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 10:46:19,375 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 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 10:46:19,375 INFO L175 Difference]: Start difference. First operand has 11 places, 8 transitions, 34 flow. Second operand 4 states and 10 transitions. [2023-11-26 10:46:19,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 13 places, 7 transitions, 44 flow [2023-11-26 10:46:19,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 12 places, 7 transitions, 42 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 10:46:19,378 INFO L231 Difference]: Finished difference. Result has 12 places, 7 transitions, 38 flow [2023-11-26 10:46:19,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=9, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=38, PETRI_PLACES=12, PETRI_TRANSITIONS=7} [2023-11-26 10:46:19,379 INFO L281 CegarLoopForPetriNet]: 6 programPoint places, 6 predicate places. [2023-11-26 10:46:19,380 INFO L495 AbstractCegarLoop]: Abstraction has has 12 places, 7 transitions, 38 flow [2023-11-26 10:46:19,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 10:46:19,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:46:19,380 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-26 10:46:19,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e931336-a3ef-492b-b584-968bad081358/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 10:46:19,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e931336-a3ef-492b-b584-968bad081358/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:19,606 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-26 10:46:19,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:19,606 INFO L85 PathProgramCache]: Analyzing trace with hash -875365711, now seen corresponding path program 1 times [2023-11-26 10:46:19,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:19,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843280529] [2023-11-26 10:46:19,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:19,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:19,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:19,847 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 10:46:19,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:19,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843280529] [2023-11-26 10:46:19,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843280529] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:19,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:19,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:46:19,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585895549] [2023-11-26 10:46:19,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:19,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:46:19,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:19,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:46:19,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:46:19,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 19 [2023-11-26 10:46:19,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 12 places, 7 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 10:46:19,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:46:19,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 19 [2023-11-26 10:46:19,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:46:19,906 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2023-11-26 10:46:19,906 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-26 10:46:19,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 7 events. 1/7 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 1/8 useless extension candidates. Maximal degree in co-relation 5. Up to 4 conditions per place. [2023-11-26 10:46:19,907 INFO L140 encePairwiseOnDemand]: 16/19 looper letters, 0 selfloop transitions, 0 changer transitions 6/6 dead transitions. [2023-11-26 10:46:19,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 13 places, 6 transitions, 44 flow [2023-11-26 10:46:19,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:46:19,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 10:46:19,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2023-11-26 10:46:19,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.17543859649122806 [2023-11-26 10:46:19,909 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 10 transitions. [2023-11-26 10:46:19,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 10 transitions. [2023-11-26 10:46:19,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:46:19,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 10 transitions. [2023-11-26 10:46:19,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 10:46:19,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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 10:46:19,911 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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 10:46:19,911 INFO L175 Difference]: Start difference. First operand has 12 places, 7 transitions, 38 flow. Second operand 3 states and 10 transitions. [2023-11-26 10:46:19,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 13 places, 6 transitions, 44 flow [2023-11-26 10:46:19,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 10 places, 6 transitions, 34 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 10:46:19,913 INFO L231 Difference]: Finished difference. Result has 10 places, 0 transitions, 0 flow [2023-11-26 10:46:19,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=8, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=10, PETRI_TRANSITIONS=0} [2023-11-26 10:46:19,914 INFO L281 CegarLoopForPetriNet]: 6 programPoint places, 4 predicate places. [2023-11-26 10:46:19,915 INFO L495 AbstractCegarLoop]: Abstraction has has 10 places, 0 transitions, 0 flow [2023-11-26 10:46:19,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 10:46:19,918 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 3 remaining) [2023-11-26 10:46:19,919 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 3 remaining) [2023-11-26 10:46:19,919 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-26 10:46:19,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 10:46:19,920 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-26 10:46:19,924 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-26 10:46:19,925 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 10:46:19,932 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 10:46:19 BasicIcfg [2023-11-26 10:46:19,932 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 10:46:19,933 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 10:46:19,933 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 10:46:19,934 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 10:46:19,935 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:46:17" (3/4) ... [2023-11-26 10:46:19,937 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-26 10:46:19,943 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-11-26 10:46:19,952 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 73 nodes and edges [2023-11-26 10:46:19,952 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2023-11-26 10:46:19,953 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-26 10:46:20,092 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e931336-a3ef-492b-b584-968bad081358/bin/uautomizer-verify-VRDe98Ueme/witness.graphml [2023-11-26 10:46:20,093 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e931336-a3ef-492b-b584-968bad081358/bin/uautomizer-verify-VRDe98Ueme/witness.yml [2023-11-26 10:46:20,093 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 10:46:20,094 INFO L158 Benchmark]: Toolchain (without parser) took 5369.57ms. Allocated memory was 157.3MB in the beginning and 199.2MB in the end (delta: 41.9MB). Free memory was 102.5MB in the beginning and 93.0MB in the end (delta: 9.6MB). Peak memory consumption was 52.3MB. Max. memory is 16.1GB. [2023-11-26 10:46:20,095 INFO L158 Benchmark]: CDTParser took 1.17ms. Allocated memory is still 102.8MB. Free memory was 49.6MB in the beginning and 49.5MB in the end (delta: 142.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 10:46:20,095 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1137.35ms. Allocated memory was 157.3MB in the beginning and 199.2MB in the end (delta: 41.9MB). Free memory was 102.1MB in the beginning and 155.7MB in the end (delta: -53.5MB). Peak memory consumption was 41.0MB. Max. memory is 16.1GB. [2023-11-26 10:46:20,096 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.50ms. Allocated memory is still 199.2MB. Free memory was 155.7MB in the beginning and 152.8MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 10:46:20,096 INFO L158 Benchmark]: Boogie Preprocessor took 114.95ms. Allocated memory is still 199.2MB. Free memory was 152.8MB in the beginning and 149.5MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 10:46:20,097 INFO L158 Benchmark]: RCFGBuilder took 1155.32ms. Allocated memory is still 199.2MB. Free memory was 149.5MB in the beginning and 157.9MB in the end (delta: -8.4MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2023-11-26 10:46:20,098 INFO L158 Benchmark]: TraceAbstraction took 2709.18ms. Allocated memory is still 199.2MB. Free memory was 156.9MB in the beginning and 98.2MB in the end (delta: 58.7MB). Peak memory consumption was 59.7MB. Max. memory is 16.1GB. [2023-11-26 10:46:20,098 INFO L158 Benchmark]: Witness Printer took 160.25ms. Allocated memory is still 199.2MB. Free memory was 97.1MB in the beginning and 93.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 10:46:20,101 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.17ms. Allocated memory is still 102.8MB. Free memory was 49.6MB in the beginning and 49.5MB in the end (delta: 142.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1137.35ms. Allocated memory was 157.3MB in the beginning and 199.2MB in the end (delta: 41.9MB). Free memory was 102.1MB in the beginning and 155.7MB in the end (delta: -53.5MB). Peak memory consumption was 41.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 81.50ms. Allocated memory is still 199.2MB. Free memory was 155.7MB in the beginning and 152.8MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 114.95ms. Allocated memory is still 199.2MB. Free memory was 152.8MB in the beginning and 149.5MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1155.32ms. Allocated memory is still 199.2MB. Free memory was 149.5MB in the beginning and 157.9MB in the end (delta: -8.4MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * TraceAbstraction took 2709.18ms. Allocated memory is still 199.2MB. Free memory was 156.9MB in the beginning and 98.2MB in the end (delta: 58.7MB). Peak memory consumption was 59.7MB. Max. memory is 16.1GB. * Witness Printer took 160.25ms. Allocated memory is still 199.2MB. Free memory was 97.1MB in the beginning and 93.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1258]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1258]: 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, 26 locations, 3 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: 2.6s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 9 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 37 IncrementalHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 6 mSDtfsCounter, 37 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=2, InterpolantAutomatonStates: 11, 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: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 48 SizeOfPredicates, 1 NumberOfNonLiveVariables, 255 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 5/7 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-26 10:46:20,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e931336-a3ef-492b-b584-968bad081358/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