./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/ldv-races/race-2_5-container_of.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b927e8f0-c94e-4e85-ba7b-55e026646baa/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b927e8f0-c94e-4e85-ba7b-55e026646baa/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b927e8f0-c94e-4e85-ba7b-55e026646baa/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b927e8f0-c94e-4e85-ba7b-55e026646baa/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-races/race-2_5-container_of.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b927e8f0-c94e-4e85-ba7b-55e026646baa/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b927e8f0-c94e-4e85-ba7b-55e026646baa/bin/uautomizer-verify-zZY32mL2XJ --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 3c93f158b090fed5438343046820ebde54acd91fe2fe757fc7dc28475dc42a7e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 22:26:39,957 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 22:26:40,062 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b927e8f0-c94e-4e85-ba7b-55e026646baa/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-23 22:26:40,069 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 22:26:40,070 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 22:26:40,110 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 22:26:40,111 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 22:26:40,111 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 22:26:40,112 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 22:26:40,117 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 22:26:40,118 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 22:26:40,119 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 22:26:40,119 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 22:26:40,121 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 22:26:40,121 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 22:26:40,122 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 22:26:40,122 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 22:26:40,123 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 22:26:40,123 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 22:26:40,123 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 22:26:40,124 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 22:26:40,124 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 22:26:40,125 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 22:26:40,125 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 22:26:40,126 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 22:26:40,126 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 22:26:40,126 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 22:26:40,127 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 22:26:40,127 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 22:26:40,128 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 22:26:40,129 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 22:26:40,129 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 22:26:40,130 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 22:26:40,130 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:26:40,130 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 22:26:40,130 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 22:26:40,131 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 22:26:40,131 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 22:26:40,131 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 22:26:40,131 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 22:26:40,132 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 22:26:40,132 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 22:26:40,132 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 22:26:40,132 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 22:26:40,133 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_b927e8f0-c94e-4e85-ba7b-55e026646baa/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b927e8f0-c94e-4e85-ba7b-55e026646baa/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c93f158b090fed5438343046820ebde54acd91fe2fe757fc7dc28475dc42a7e [2023-11-23 22:26:40,439 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 22:26:40,473 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 22:26:40,475 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 22:26:40,476 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 22:26:40,477 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 22:26:40,479 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b927e8f0-c94e-4e85-ba7b-55e026646baa/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/ldv-races/race-2_5-container_of.i [2023-11-23 22:26:43,599 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 22:26:44,013 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 22:26:44,014 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b927e8f0-c94e-4e85-ba7b-55e026646baa/sv-benchmarks/c/ldv-races/race-2_5-container_of.i [2023-11-23 22:26:44,062 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b927e8f0-c94e-4e85-ba7b-55e026646baa/bin/uautomizer-verify-zZY32mL2XJ/data/4835c2c5b/70b68845d831470aaddeecadf581003e/FLAGbc67608c4 [2023-11-23 22:26:44,079 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b927e8f0-c94e-4e85-ba7b-55e026646baa/bin/uautomizer-verify-zZY32mL2XJ/data/4835c2c5b/70b68845d831470aaddeecadf581003e [2023-11-23 22:26:44,086 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 22:26:44,088 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 22:26:44,092 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 22:26:44,092 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 22:26:44,097 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 22:26:44,098 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:26:44" (1/1) ... [2023-11-23 22:26:44,099 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54ef0011 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:26:44, skipping insertion in model container [2023-11-23 22:26:44,099 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:26:44" (1/1) ... [2023-11-23 22:26:44,204 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 22:26:45,002 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:26:45,026 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 22:26:45,113 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:26:45,185 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:26:45,185 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:26:45,194 INFO L206 MainTranslator]: Completed translation [2023-11-23 22:26:45,195 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:26:45 WrapperNode [2023-11-23 22:26:45,195 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 22:26:45,197 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 22:26:45,197 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 22:26:45,197 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 22:26:45,236 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:26:45" (1/1) ... [2023-11-23 22:26:45,269 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:26:45" (1/1) ... [2023-11-23 22:26:45,319 INFO L138 Inliner]: procedures = 248, calls = 64, calls flagged for inlining = 13, calls inlined = 18, statements flattened = 162 [2023-11-23 22:26:45,320 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 22:26:45,321 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 22:26:45,321 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 22:26:45,321 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 22:26:45,333 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:26:45" (1/1) ... [2023-11-23 22:26:45,333 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:26:45" (1/1) ... [2023-11-23 22:26:45,356 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:26:45" (1/1) ... [2023-11-23 22:26:45,389 INFO L189 HeapSplitter]: Split 25 memory accesses to 7 slices as follows [2, 12, 3, 3, 2, 0, 3] [2023-11-23 22:26:45,389 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:26:45" (1/1) ... [2023-11-23 22:26:45,390 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:26:45" (1/1) ... [2023-11-23 22:26:45,420 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:26:45" (1/1) ... [2023-11-23 22:26:45,426 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:26:45" (1/1) ... [2023-11-23 22:26:45,432 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:26:45" (1/1) ... [2023-11-23 22:26:45,435 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:26:45" (1/1) ... [2023-11-23 22:26:45,456 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 22:26:45,457 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 22:26:45,457 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 22:26:45,457 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 22:26:45,458 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:26:45" (1/1) ... [2023-11-23 22:26:45,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:26:45,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b927e8f0-c94e-4e85-ba7b-55e026646baa/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:26:45,494 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b927e8f0-c94e-4e85-ba7b-55e026646baa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 22:26:45,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b927e8f0-c94e-4e85-ba7b-55e026646baa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 22:26:45,542 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2023-11-23 22:26:45,542 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2023-11-23 22:26:45,543 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-23 22:26:45,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 22:26:45,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 22:26:45,543 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-23 22:26:45,543 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-23 22:26:45,543 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 22:26:45,543 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 22:26:45,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 22:26:45,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 22:26:45,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-23 22:26:45,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-23 22:26:45,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-23 22:26:45,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 22:26:45,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 22:26:45,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 22:26:45,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 22:26:45,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-23 22:26:45,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-23 22:26:45,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-23 22:26:45,545 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-23 22:26:45,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 22:26:45,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-23 22:26:45,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-23 22:26:45,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-23 22:26:45,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-23 22:26:45,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-23 22:26:45,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-23 22:26:45,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-23 22:26:45,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 22:26:45,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 22:26:45,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 22:26:45,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 22:26:45,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 22:26:45,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-23 22:26:45,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-23 22:26:45,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 22:26:45,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 22:26:45,549 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 22:26:45,923 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 22:26:45,926 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 22:26:46,255 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 22:26:46,508 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 22:26:46,508 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 22:26:46,510 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:26:46 BoogieIcfgContainer [2023-11-23 22:26:46,510 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 22:26:46,513 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 22:26:46,513 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 22:26:46,516 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 22:26:46,517 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:26:44" (1/3) ... [2023-11-23 22:26:46,517 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38413288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:26:46, skipping insertion in model container [2023-11-23 22:26:46,518 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:26:45" (2/3) ... [2023-11-23 22:26:46,519 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38413288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:26:46, skipping insertion in model container [2023-11-23 22:26:46,520 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:26:46" (3/3) ... [2023-11-23 22:26:46,521 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_5-container_of.i [2023-11-23 22:26:46,529 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-23 22:26:46,537 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 22:26:46,538 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-23 22:26:46,538 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 22:26:46,599 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-23 22:26:46,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 45 transitions, 104 flow [2023-11-23 22:26:46,674 INFO L124 PetriNetUnfolderBase]: 2/48 cut-off events. [2023-11-23 22:26:46,675 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-23 22:26:46,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 48 events. 2/48 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 76 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 24. Up to 3 conditions per place. [2023-11-23 22:26:46,679 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 45 transitions, 104 flow [2023-11-23 22:26:46,683 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 39 transitions, 87 flow [2023-11-23 22:26:46,699 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 22:26:46,708 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;@5c6d119, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 22:26:46,709 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-23 22:26:46,725 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 22:26:46,725 INFO L124 PetriNetUnfolderBase]: 0/20 cut-off events. [2023-11-23 22:26:46,726 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-23 22:26:46,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:26:46,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:26:46,728 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting my_callbackErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-11-23 22:26:46,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:26:46,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1689737507, now seen corresponding path program 1 times [2023-11-23 22:26:46,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:26:46,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702440940] [2023-11-23 22:26:46,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:26:46,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:26:47,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:26:47,053 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 22:26:47,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:26:47,137 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 22:26:47,139 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 22:26:47,147 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location my_callbackErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 8 remaining) [2023-11-23 22:26:47,149 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 8 remaining) [2023-11-23 22:26:47,150 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 8 remaining) [2023-11-23 22:26:47,150 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 8 remaining) [2023-11-23 22:26:47,151 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 8 remaining) [2023-11-23 22:26:47,152 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 8 remaining) [2023-11-23 22:26:47,152 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 8 remaining) [2023-11-23 22:26:47,152 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 8 remaining) [2023-11-23 22:26:47,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 22:26:47,154 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-23 22:26:47,164 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-23 22:26:47,168 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 22:26:47,203 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre9 could not be translated [2023-11-23 22:26:47,216 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 10:26:47 BasicIcfg [2023-11-23 22:26:47,217 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 22:26:47,217 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 22:26:47,217 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 22:26:47,218 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 22:26:47,218 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:26:46" (3/4) ... [2023-11-23 22:26:47,220 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-23 22:26:47,245 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre9 could not be translated [2023-11-23 22:26:47,311 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b927e8f0-c94e-4e85-ba7b-55e026646baa/bin/uautomizer-verify-zZY32mL2XJ/witness.graphml [2023-11-23 22:26:47,319 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 22:26:47,321 INFO L158 Benchmark]: Toolchain (without parser) took 3232.36ms. Allocated memory is still 138.4MB. Free memory was 94.3MB in the beginning and 58.3MB in the end (delta: 36.0MB). Peak memory consumption was 37.6MB. Max. memory is 16.1GB. [2023-11-23 22:26:47,322 INFO L158 Benchmark]: CDTParser took 1.22ms. Allocated memory is still 138.4MB. Free memory is still 94.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 22:26:47,323 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1103.60ms. Allocated memory is still 138.4MB. Free memory was 94.0MB in the beginning and 59.7MB in the end (delta: 34.2MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2023-11-23 22:26:47,324 INFO L158 Benchmark]: Boogie Procedure Inliner took 123.33ms. Allocated memory is still 138.4MB. Free memory was 59.7MB in the beginning and 106.9MB in the end (delta: -47.2MB). Peak memory consumption was 10.3MB. Max. memory is 16.1GB. [2023-11-23 22:26:47,324 INFO L158 Benchmark]: Boogie Preprocessor took 135.56ms. Allocated memory is still 138.4MB. Free memory was 106.9MB in the beginning and 102.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 22:26:47,328 INFO L158 Benchmark]: RCFGBuilder took 1053.15ms. Allocated memory is still 138.4MB. Free memory was 102.7MB in the beginning and 101.1MB in the end (delta: 1.7MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. [2023-11-23 22:26:47,329 INFO L158 Benchmark]: TraceAbstraction took 703.96ms. Allocated memory is still 138.4MB. Free memory was 100.3MB in the beginning and 62.0MB in the end (delta: 38.3MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2023-11-23 22:26:47,329 INFO L158 Benchmark]: Witness Printer took 102.34ms. Allocated memory is still 138.4MB. Free memory was 62.0MB in the beginning and 58.3MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 22:26:47,332 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.22ms. Allocated memory is still 138.4MB. Free memory is still 94.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1103.60ms. Allocated memory is still 138.4MB. Free memory was 94.0MB in the beginning and 59.7MB in the end (delta: 34.2MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 123.33ms. Allocated memory is still 138.4MB. Free memory was 59.7MB in the beginning and 106.9MB in the end (delta: -47.2MB). Peak memory consumption was 10.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 135.56ms. Allocated memory is still 138.4MB. Free memory was 106.9MB in the beginning and 102.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1053.15ms. Allocated memory is still 138.4MB. Free memory was 102.7MB in the beginning and 101.1MB in the end (delta: 1.7MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. * TraceAbstraction took 703.96ms. Allocated memory is still 138.4MB. Free memory was 100.3MB in the beginning and 62.0MB in the end (delta: 38.3MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * Witness Printer took 102.34ms. Allocated memory is still 138.4MB. Free memory was 62.0MB in the beginning and 58.3MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre9 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre9 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3913]: integer overflow possible integer overflow possible We found a FailurePath: [L3888] 0 pthread_t t1,t2; [L3888] 0 pthread_t t1,t2; [L3888] 0 pthread_t t1,t2; [L3888] 0 pthread_t t1,t2; [L3962] CALL, EXPR 0 my_drv_init() [L3956] 0 return 0; [L3962] RET, EXPR 0 my_drv_init() [L3962] 0 int ret = my_drv_init(); [L3963] COND TRUE 0 ret==0 [L3964] 0 int probe_ret; [L3965] 0 struct my_data data; [L3966] CALL 0 my_drv_probe(&data) [L3919] 0 struct device *d = &data->dev; [L3923] 0 data->shared.a = 0 [L3924] 0 data->shared.b = 0 [L3925] 0 int res = __VERIFIER_nondet_int(); [L3926] COND FALSE 0 !(\read(res)) [L3929] FCALL, FORK 0 pthread_create(&t1, ((void *)0), my_callback, (void *)d) VAL [arg={5:24}, d={5:24}, data={5:0}, data={5:0}, res=0, t1={3:0}, t2={4:0}] [L3902] 1 struct device *dev = (struct device*)arg; [L3903] 1 struct my_data *data; [L3904] 1 const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); [L3904] 1 { const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); (struct my_data *)( (char *)__mptr - __builtin_offsetof (struct my_data, dev) );} [L3904] 1 { const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); (struct my_data *)( (char *)__mptr - __builtin_offsetof (struct my_data, dev) );} [L3904] 1 data = ({ const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); (struct my_data *)( (char *)__mptr - __builtin_offsetof (struct my_data, dev) );}) [L3907] 1 data->shared.a = 1 VAL [arg={5:24}, arg={5:24}, data={5:0}, dev={5:24}, t1={3:0}, t2={4:0}] [L3910] EXPR 1 data->shared.b [L3910] 1 int lb = data->shared.b; [L3913] 1 lb + 1 VAL [arg={5:24}, arg={5:24}, data={5:0}, dev={5:24}, lb=-2147483650, t1={3:0}, t2={4:0}] - UnprovableResult [Line: 3929]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 3930]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 3913]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 4 procedures, 56 locations, 8 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: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=87occurred in iteration=0, InterpolantAutomatonStates: 0, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate proved your program to be incorrect! [2023-11-23 22:26:47,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b927e8f0-c94e-4e85-ba7b-55e026646baa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)