./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-divine/condvar_spurious_wakeup.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f389b540-881f-4125-87f7-00d38e75ef68/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f389b540-881f-4125-87f7-00d38e75ef68/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f389b540-881f-4125-87f7-00d38e75ef68/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f389b540-881f-4125-87f7-00d38e75ef68/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-divine/condvar_spurious_wakeup.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f389b540-881f-4125-87f7-00d38e75ef68/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f389b540-881f-4125-87f7-00d38e75ef68/bin/uautomizer-j4sWxH34Be --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 36c3c3dc239d6629a8ba20aca175d79c45880ab21458cd8ebdaac3a8ef359066 ................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:32:39,880 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:32:39,882 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:32:39,920 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:32:39,921 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:32:39,923 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:32:39,924 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:32:39,927 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:32:39,932 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:32:39,933 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:32:39,934 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:32:39,936 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:32:39,936 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:32:39,938 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:32:39,939 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:32:39,941 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:32:39,942 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:32:39,943 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:32:39,945 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:32:39,956 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:32:39,960 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:32:39,965 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:32:39,970 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:32:39,971 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:32:39,979 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:32:39,980 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:32:39,980 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:32:39,981 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:32:39,982 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:32:39,983 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:32:39,984 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:32:39,985 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:32:39,985 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:32:39,986 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:32:39,992 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:32:39,992 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:32:39,993 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:32:39,993 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:32:39,994 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:32:39,995 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:32:39,995 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:32:39,996 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f389b540-881f-4125-87f7-00d38e75ef68/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 19:32:40,044 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:32:40,044 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:32:40,045 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:32:40,045 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:32:40,046 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:32:40,046 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:32:40,047 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:32:40,047 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:32:40,047 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:32:40,047 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:32:40,048 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:32:40,048 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:32:40,048 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:32:40,048 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:32:40,049 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:32:40,049 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:32:40,049 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:32:40,050 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:32:40,050 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:32:40,050 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:32:40,050 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:32:40,059 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:32:40,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:32:40,060 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:32:40,060 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:32:40,060 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:32:40,060 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:32:40,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:32:40,062 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 19:32:40,063 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 19:32:40,063 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:32:40,063 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:32:40,064 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_f389b540-881f-4125-87f7-00d38e75ef68/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f389b540-881f-4125-87f7-00d38e75ef68/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 36c3c3dc239d6629a8ba20aca175d79c45880ab21458cd8ebdaac3a8ef359066 [2021-10-21 19:32:40,332 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:32:40,351 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:32:40,353 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:32:40,354 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:32:40,355 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:32:40,356 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f389b540-881f-4125-87f7-00d38e75ef68/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/pthread-divine/condvar_spurious_wakeup.i [2021-10-21 19:32:40,421 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f389b540-881f-4125-87f7-00d38e75ef68/bin/uautomizer-j4sWxH34Be/data/19e215ba8/9f6602b1a0f94d72ad9fab68c4ef86f3/FLAGfa01eb455 [2021-10-21 19:32:40,944 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:32:40,949 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f389b540-881f-4125-87f7-00d38e75ef68/sv-benchmarks/c/pthread-divine/condvar_spurious_wakeup.i [2021-10-21 19:32:40,974 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f389b540-881f-4125-87f7-00d38e75ef68/bin/uautomizer-j4sWxH34Be/data/19e215ba8/9f6602b1a0f94d72ad9fab68c4ef86f3/FLAGfa01eb455 [2021-10-21 19:32:41,256 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f389b540-881f-4125-87f7-00d38e75ef68/bin/uautomizer-j4sWxH34Be/data/19e215ba8/9f6602b1a0f94d72ad9fab68c4ef86f3 [2021-10-21 19:32:41,260 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:32:41,261 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:32:41,265 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:32:41,266 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:32:41,269 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:32:41,270 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:32:41" (1/1) ... [2021-10-21 19:32:41,272 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31a3ce0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:32:41, skipping insertion in model container [2021-10-21 19:32:41,273 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:32:41" (1/1) ... [2021-10-21 19:32:41,281 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:32:41,342 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:32:41,494 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-10-21 19:32:41,642 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f389b540-881f-4125-87f7-00d38e75ef68/sv-benchmarks/c/pthread-divine/condvar_spurious_wakeup.i[30416,30429] [2021-10-21 19:32:41,652 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:32:41,664 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:32:41,676 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-10-21 19:32:41,698 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f389b540-881f-4125-87f7-00d38e75ef68/sv-benchmarks/c/pthread-divine/condvar_spurious_wakeup.i[30416,30429] [2021-10-21 19:32:41,701 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:32:41,752 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:32:41,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:32:41 WrapperNode [2021-10-21 19:32:41,753 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:32:41,755 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:32:41,755 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:32:41,755 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:32:41,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:32:41" (1/1) ... [2021-10-21 19:32:41,803 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:32:41" (1/1) ... [2021-10-21 19:32:41,828 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:32:41,828 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:32:41,829 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:32:41,829 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:32:41,836 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:32:41" (1/1) ... [2021-10-21 19:32:41,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:32:41" (1/1) ... [2021-10-21 19:32:41,839 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:32:41" (1/1) ... [2021-10-21 19:32:41,840 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:32:41" (1/1) ... [2021-10-21 19:32:41,857 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:32:41" (1/1) ... [2021-10-21 19:32:41,861 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:32:41" (1/1) ... [2021-10-21 19:32:41,862 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:32:41" (1/1) ... [2021-10-21 19:32:41,865 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:32:41,866 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:32:41,866 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:32:41,866 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:32:41,879 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:32:41" (1/1) ... [2021-10-21 19:32:41,886 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:32:41,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f389b540-881f-4125-87f7-00d38e75ef68/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:32:41,916 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f389b540-881f-4125-87f7-00d38e75ef68/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:32:41,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f389b540-881f-4125-87f7-00d38e75ef68/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:32:41,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-21 19:32:41,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-21 19:32:41,958 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-10-21 19:32:41,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:32:41,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 19:32:41,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:32:41,959 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2021-10-21 19:32:41,959 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2021-10-21 19:32:41,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:32:41,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:32:41,961 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-21 19:32:42,222 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:32:42,222 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-21 19:32:42,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:32:42 BoogieIcfgContainer [2021-10-21 19:32:42,224 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:32:42,226 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:32:42,226 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:32:42,229 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:32:42,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:32:41" (1/3) ... [2021-10-21 19:32:42,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b790b4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:32:42, skipping insertion in model container [2021-10-21 19:32:42,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:32:41" (2/3) ... [2021-10-21 19:32:42,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b790b4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:32:42, skipping insertion in model container [2021-10-21 19:32:42,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:32:42" (3/3) ... [2021-10-21 19:32:42,232 INFO L111 eAbstractionObserver]: Analyzing ICFG condvar_spurious_wakeup.i [2021-10-21 19:32:42,237 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-21 19:32:42,237 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:32:42,237 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 19:32:42,238 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-21 19:32:42,284 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:42,284 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:42,284 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:42,284 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:42,285 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:42,285 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:42,285 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:42,285 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:42,286 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:42,286 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:42,286 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:42,287 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:42,287 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:42,287 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:42,288 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:42,288 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:42,289 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:42,298 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:42,298 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:42,298 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:42,301 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:42,302 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:42,302 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:42,302 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:42,328 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:42,328 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:32:42,340 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-10-21 19:32:42,404 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:32:42,410 INFO L339 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=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR [2021-10-21 19:32:42,415 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-21 19:32:42,429 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 68 transitions, 144 flow [2021-10-21 19:32:42,478 INFO L129 PetriNetUnfolder]: 3/67 cut-off events. [2021-10-21 19:32:42,478 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-21 19:32:42,482 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 67 events. 3/67 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2021-10-21 19:32:42,482 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 68 transitions, 144 flow [2021-10-21 19:32:42,487 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 61 transitions, 125 flow [2021-10-21 19:32:42,510 INFO L129 PetriNetUnfolder]: 3/58 cut-off events. [2021-10-21 19:32:42,510 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-21 19:32:42,510 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:32:42,511 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:32:42,512 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting threadErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:32:42,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:32:42,517 INFO L82 PathProgramCache]: Analyzing trace with hash -567238561, now seen corresponding path program 1 times [2021-10-21 19:32:42,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:32:42,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457425608] [2021-10-21 19:32:42,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:32:42,527 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:32:42,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:32:42,687 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:32:42,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:32:42,767 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:32:42,769 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 19:32:42,770 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location threadErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:32:42,772 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-21 19:32:42,772 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:32:42,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:32:42,780 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-21 19:32:42,780 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:32:42,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:32:42 BasicIcfg [2021-10-21 19:32:42,824 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:32:42,825 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:32:42,825 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:32:42,825 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:32:42,826 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:32:42" (3/4) ... [2021-10-21 19:32:42,828 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-21 19:32:42,886 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f389b540-881f-4125-87f7-00d38e75ef68/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:32:42,886 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:32:42,888 INFO L168 Benchmark]: Toolchain (without parser) took 1625.67 ms. Allocated memory was 88.1 MB in the beginning and 115.3 MB in the end (delta: 27.3 MB). Free memory was 49.3 MB in the beginning and 63.7 MB in the end (delta: -14.4 MB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. [2021-10-21 19:32:42,888 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 88.1 MB. Free memory is still 66.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:32:42,889 INFO L168 Benchmark]: CACSL2BoogieTranslator took 488.28 ms. Allocated memory is still 88.1 MB. Free memory was 49.1 MB in the beginning and 56.0 MB in the end (delta: -6.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:32:42,890 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.31 ms. Allocated memory is still 88.1 MB. Free memory was 56.0 MB in the beginning and 54.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:32:42,891 INFO L168 Benchmark]: Boogie Preprocessor took 36.88 ms. Allocated memory is still 88.1 MB. Free memory was 54.0 MB in the beginning and 52.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:32:42,891 INFO L168 Benchmark]: RCFGBuilder took 358.05 ms. Allocated memory is still 88.1 MB. Free memory was 52.8 MB in the beginning and 41.1 MB in the end (delta: 11.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:32:42,895 INFO L168 Benchmark]: TraceAbstraction took 598.71 ms. Allocated memory was 88.1 MB in the beginning and 115.3 MB in the end (delta: 27.3 MB). Free memory was 40.5 MB in the beginning and 67.9 MB in the end (delta: -27.4 MB). Peak memory consumption was 431.3 kB. Max. memory is 16.1 GB. [2021-10-21 19:32:42,895 INFO L168 Benchmark]: Witness Printer took 61.01 ms. Allocated memory is still 115.3 MB. Free memory was 67.9 MB in the beginning and 63.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:32:42,899 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 88.1 MB. Free memory is still 66.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 488.28 ms. Allocated memory is still 88.1 MB. Free memory was 49.1 MB in the beginning and 56.0 MB in the end (delta: -6.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 73.31 ms. Allocated memory is still 88.1 MB. Free memory was 56.0 MB in the beginning and 54.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.88 ms. Allocated memory is still 88.1 MB. Free memory was 54.0 MB in the beginning and 52.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 358.05 ms. Allocated memory is still 88.1 MB. Free memory was 52.8 MB in the beginning and 41.1 MB in the end (delta: 11.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 598.71 ms. Allocated memory was 88.1 MB in the beginning and 115.3 MB in the end (delta: 27.3 MB). Free memory was 40.5 MB in the beginning and 67.9 MB in the end (delta: -27.4 MB). Peak memory consumption was 431.3 kB. Max. memory is 16.1 GB. * Witness Printer took 61.01 ms. Allocated memory is still 115.3 MB. Free memory was 67.9 MB in the beginning and 63.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 704]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L697] 0 pthread_mutex_t lock; VAL [lock={11:0}] [L698] 0 pthread_cond_t cond; VAL [cond={13:0}, lock={11:0}] [L699] 0 int x; VAL [cond={13:0}, lock={11:0}, x=0] [L709] 0 pthread_t t; VAL [cond={13:0}, lock={11:0}, x=0] [L712] FCALL, FORK 0 pthread_create( &t, ((void *)0), thread, ((void *)0) ) VAL [arg={0:0}, cond={13:0}, lock={11:0}, x=0] [L704] 1 !(x == 42) ? reach_error() : (void)0 VAL [arg={0:0}, arg={0:0}, cond={13:0}, lock={11:0}, x=0] [L704] 1 reach_error() VAL [arg={0:0}, arg={0:0}, cond={13:0}, lock={11:0}, x=0] - UnprovableResult [Line: 712]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 80 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 22.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 377.1ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 72.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=125occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 11.1ms SsaConstructionTime, 73.6ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 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! [2021-10-21 19:32:42,946 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f389b540-881f-4125-87f7-00d38e75ef68/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...