./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/while_infinite_loop_4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458af9c9-d184-40af-b575-2d12fc176761/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458af9c9-d184-40af-b575-2d12fc176761/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458af9c9-d184-40af-b575-2d12fc176761/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458af9c9-d184-40af-b575-2d12fc176761/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/while_infinite_loop_4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458af9c9-d184-40af-b575-2d12fc176761/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458af9c9-d184-40af-b575-2d12fc176761/bin/uautomizer-WNIpwEf4Nt --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 cf11ae0ce80f2ff20585fcb052cccfcf6fefbf1f ......................................................................................................................................................................................................................................................................................... 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-4e77c04 [2021-10-12 23:59:15,033 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-12 23:59:15,035 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-12 23:59:15,066 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-12 23:59:15,067 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-12 23:59:15,068 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-12 23:59:15,070 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-12 23:59:15,076 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-12 23:59:15,080 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-12 23:59:15,082 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-12 23:59:15,083 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-12 23:59:15,086 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-12 23:59:15,087 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-12 23:59:15,095 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-12 23:59:15,097 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-12 23:59:15,099 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-12 23:59:15,101 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-12 23:59:15,104 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-12 23:59:15,106 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-12 23:59:15,111 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-12 23:59:15,116 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-12 23:59:15,118 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-12 23:59:15,121 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-12 23:59:15,122 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-12 23:59:15,130 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-12 23:59:15,131 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-12 23:59:15,131 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-12 23:59:15,133 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-12 23:59:15,134 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-12 23:59:15,135 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-12 23:59:15,136 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-12 23:59:15,137 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-12 23:59:15,139 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-12 23:59:15,140 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-12 23:59:15,142 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-12 23:59:15,142 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-12 23:59:15,143 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-12 23:59:15,144 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-12 23:59:15,144 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-12 23:59:15,145 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-12 23:59:15,145 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-12 23:59:15,146 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458af9c9-d184-40af-b575-2d12fc176761/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-12 23:59:15,197 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-12 23:59:15,197 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-12 23:59:15,198 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-12 23:59:15,198 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-12 23:59:15,205 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-12 23:59:15,206 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-12 23:59:15,206 INFO L138 SettingsManager]: * Use SBE=true [2021-10-12 23:59:15,206 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-12 23:59:15,207 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-12 23:59:15,207 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-12 23:59:15,207 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-12 23:59:15,208 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-12 23:59:15,208 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-12 23:59:15,209 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-12 23:59:15,209 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-12 23:59:15,209 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-12 23:59:15,209 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-12 23:59:15,209 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-12 23:59:15,210 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-12 23:59:15,210 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-12 23:59:15,210 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-12 23:59:15,210 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-12 23:59:15,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-12 23:59:15,211 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-12 23:59:15,211 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-12 23:59:15,211 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-12 23:59:15,212 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-12 23:59:15,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-12 23:59:15,212 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-12 23:59:15,214 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-12 23:59:15,214 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_458af9c9-d184-40af-b575-2d12fc176761/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458af9c9-d184-40af-b575-2d12fc176761/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cf11ae0ce80f2ff20585fcb052cccfcf6fefbf1f [2021-10-12 23:59:15,546 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-12 23:59:15,583 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-12 23:59:15,586 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-12 23:59:15,587 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-12 23:59:15,588 INFO L275 PluginConnector]: CDTParser initialized [2021-10-12 23:59:15,589 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458af9c9-d184-40af-b575-2d12fc176761/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/loops/while_infinite_loop_4.c [2021-10-12 23:59:15,671 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458af9c9-d184-40af-b575-2d12fc176761/bin/uautomizer-WNIpwEf4Nt/data/9b6202828/6c403bdfa18243508a6a640006c942d2/FLAG8b8f3227c [2021-10-12 23:59:16,188 INFO L306 CDTParser]: Found 1 translation units. [2021-10-12 23:59:16,189 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458af9c9-d184-40af-b575-2d12fc176761/sv-benchmarks/c/loops/while_infinite_loop_4.c [2021-10-12 23:59:16,200 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458af9c9-d184-40af-b575-2d12fc176761/bin/uautomizer-WNIpwEf4Nt/data/9b6202828/6c403bdfa18243508a6a640006c942d2/FLAG8b8f3227c [2021-10-12 23:59:16,552 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458af9c9-d184-40af-b575-2d12fc176761/bin/uautomizer-WNIpwEf4Nt/data/9b6202828/6c403bdfa18243508a6a640006c942d2 [2021-10-12 23:59:16,555 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-12 23:59:16,556 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-12 23:59:16,558 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-12 23:59:16,558 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-12 23:59:16,561 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-12 23:59:16,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:59:16" (1/1) ... [2021-10-12 23:59:16,564 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18d01a84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:16, skipping insertion in model container [2021-10-12 23:59:16,564 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:59:16" (1/1) ... [2021-10-12 23:59:16,571 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-12 23:59:16,583 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-12 23:59:16,762 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_458af9c9-d184-40af-b575-2d12fc176761/sv-benchmarks/c/loops/while_infinite_loop_4.c[333,346] [2021-10-12 23:59:16,772 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-12 23:59:16,781 INFO L203 MainTranslator]: Completed pre-run [2021-10-12 23:59:16,793 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_458af9c9-d184-40af-b575-2d12fc176761/sv-benchmarks/c/loops/while_infinite_loop_4.c[333,346] [2021-10-12 23:59:16,796 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-12 23:59:16,809 INFO L208 MainTranslator]: Completed translation [2021-10-12 23:59:16,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:16 WrapperNode [2021-10-12 23:59:16,810 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-12 23:59:16,811 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-12 23:59:16,811 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-12 23:59:16,812 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-12 23:59:16,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:16" (1/1) ... [2021-10-12 23:59:16,826 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:16" (1/1) ... [2021-10-12 23:59:16,844 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-12 23:59:16,845 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-12 23:59:16,845 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-12 23:59:16,845 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-12 23:59:16,854 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:16" (1/1) ... [2021-10-12 23:59:16,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:16" (1/1) ... [2021-10-12 23:59:16,855 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:16" (1/1) ... [2021-10-12 23:59:16,856 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:16" (1/1) ... [2021-10-12 23:59:16,859 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:16" (1/1) ... [2021-10-12 23:59:16,863 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:16" (1/1) ... [2021-10-12 23:59:16,864 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:16" (1/1) ... [2021-10-12 23:59:16,866 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-12 23:59:16,867 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-12 23:59:16,867 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-12 23:59:16,867 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-12 23:59:16,868 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:16" (1/1) ... [2021-10-12 23:59:16,882 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-12 23:59:16,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458af9c9-d184-40af-b575-2d12fc176761/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-12 23:59:16,910 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458af9c9-d184-40af-b575-2d12fc176761/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-12 23:59:16,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458af9c9-d184-40af-b575-2d12fc176761/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-12 23:59:16,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-12 23:59:16,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-12 23:59:16,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-12 23:59:16,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-12 23:59:17,132 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-12 23:59:17,133 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-12 23:59:17,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:59:17 BoogieIcfgContainer [2021-10-12 23:59:17,135 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-12 23:59:17,137 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-12 23:59:17,137 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-12 23:59:17,151 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-12 23:59:17,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 11:59:16" (1/3) ... [2021-10-12 23:59:17,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23dafcbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:59:17, skipping insertion in model container [2021-10-12 23:59:17,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:16" (2/3) ... [2021-10-12 23:59:17,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23dafcbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:59:17, skipping insertion in model container [2021-10-12 23:59:17,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:59:17" (3/3) ... [2021-10-12 23:59:17,154 INFO L111 eAbstractionObserver]: Analyzing ICFG while_infinite_loop_4.c [2021-10-12 23:59:17,160 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-12 23:59:17,170 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-12 23:59:17,266 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-12 23:59:17,287 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, mConcurrency=FINITE_AUTOMATA, 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 [2021-10-12 23:59:17,287 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-12 23:59:17,313 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 15 states have internal predecessors, (21), 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) [2021-10-12 23:59:17,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-12 23:59:17,330 INFO L504 BasicCegarLoop]: Found error trace [2021-10-12 23:59:17,331 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-12 23:59:17,332 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-12 23:59:17,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-12 23:59:17,337 INFO L82 PathProgramCache]: Analyzing trace with hash 890491815, now seen corresponding path program 1 times [2021-10-12 23:59:17,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-12 23:59:17,362 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399899217] [2021-10-12 23:59:17,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-12 23:59:17,364 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-12 23:59:17,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-12 23:59:17,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-12 23:59:17,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-12 23:59:17,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399899217] [2021-10-12 23:59:17,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399899217] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-12 23:59:17,572 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-12 23:59:17,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-12 23:59:17,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136357997] [2021-10-12 23:59:17,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-12 23:59:17,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-12 23:59:17,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-12 23:59:17,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-12 23:59:17,604 INFO L87 Difference]: Start difference. First operand has 16 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 15 states have internal predecessors, (21), 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) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-10-12 23:59:17,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-12 23:59:17,620 INFO L93 Difference]: Finished difference Result 22 states and 32 transitions. [2021-10-12 23:59:17,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-12 23:59:17,622 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) Word has length 6 [2021-10-12 23:59:17,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-12 23:59:17,634 INFO L225 Difference]: With dead ends: 22 [2021-10-12 23:59:17,634 INFO L226 Difference]: Without dead ends: 8 [2021-10-12 23:59:17,637 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-12 23:59:17,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-10-12 23:59:17,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-12 23:59:17,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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) [2021-10-12 23:59:17,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-10-12 23:59:17,669 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2021-10-12 23:59:17,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-12 23:59:17,670 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-10-12 23:59:17,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-10-12 23:59:17,671 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-10-12 23:59:17,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-12 23:59:17,671 INFO L504 BasicCegarLoop]: Found error trace [2021-10-12 23:59:17,671 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-12 23:59:17,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-12 23:59:17,673 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-12 23:59:17,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-12 23:59:17,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1810848111, now seen corresponding path program 1 times [2021-10-12 23:59:17,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-12 23:59:17,677 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697724301] [2021-10-12 23:59:17,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-12 23:59:17,678 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-12 23:59:17,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-12 23:59:17,726 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-12 23:59:17,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-12 23:59:17,784 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-12 23:59:17,784 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-12 23:59:17,786 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-12 23:59:17,788 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-12 23:59:17,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-12 23:59:17,796 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-12 23:59:17,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 11:59:17 BoogieIcfgContainer [2021-10-12 23:59:17,821 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-12 23:59:17,823 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-12 23:59:17,823 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-12 23:59:17,823 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-12 23:59:17,824 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:59:17" (3/4) ... [2021-10-12 23:59:17,826 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-12 23:59:17,876 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458af9c9-d184-40af-b575-2d12fc176761/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-12 23:59:17,876 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-12 23:59:17,883 INFO L168 Benchmark]: Toolchain (without parser) took 1321.27 ms. Allocated memory was 75.5 MB in the beginning and 113.2 MB in the end (delta: 37.7 MB). Free memory was 40.2 MB in the beginning and 54.5 MB in the end (delta: -14.2 MB). Peak memory consumption was 20.7 MB. Max. memory is 16.1 GB. [2021-10-12 23:59:17,884 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 75.5 MB. Free memory was 39.2 MB in the beginning and 39.2 MB in the end (delta: 42.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-12 23:59:17,884 INFO L168 Benchmark]: CACSL2BoogieTranslator took 252.75 ms. Allocated memory was 75.5 MB in the beginning and 113.2 MB in the end (delta: 37.7 MB). Free memory was 40.0 MB in the beginning and 90.1 MB in the end (delta: -50.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-12 23:59:17,886 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.99 ms. Allocated memory is still 113.2 MB. Free memory was 90.1 MB in the beginning and 88.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-12 23:59:17,886 INFO L168 Benchmark]: Boogie Preprocessor took 20.92 ms. Allocated memory is still 113.2 MB. Free memory was 88.9 MB in the beginning and 88.0 MB in the end (delta: 929.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-12 23:59:17,887 INFO L168 Benchmark]: RCFGBuilder took 268.58 ms. Allocated memory is still 113.2 MB. Free memory was 88.0 MB in the beginning and 78.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-12 23:59:17,888 INFO L168 Benchmark]: TraceAbstraction took 685.10 ms. Allocated memory is still 113.2 MB. Free memory was 78.0 MB in the beginning and 56.2 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-12 23:59:17,889 INFO L168 Benchmark]: Witness Printer took 53.46 ms. Allocated memory is still 113.2 MB. Free memory was 56.2 MB in the beginning and 54.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-12 23:59:17,896 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 75.5 MB. Free memory was 39.2 MB in the beginning and 39.2 MB in the end (delta: 42.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 252.75 ms. Allocated memory was 75.5 MB in the beginning and 113.2 MB in the end (delta: 37.7 MB). Free memory was 40.0 MB in the beginning and 90.1 MB in the end (delta: -50.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.99 ms. Allocated memory is still 113.2 MB. Free memory was 90.1 MB in the beginning and 88.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.92 ms. Allocated memory is still 113.2 MB. Free memory was 88.9 MB in the beginning and 88.0 MB in the end (delta: 929.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 268.58 ms. Allocated memory is still 113.2 MB. Free memory was 88.0 MB in the beginning and 78.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 685.10 ms. Allocated memory is still 113.2 MB. Free memory was 78.0 MB in the beginning and 56.2 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Witness Printer took 53.46 ms. Allocated memory is still 113.2 MB. Free memory was 56.2 MB in the beginning and 54.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 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: 7]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L12] int x=0; VAL [x=0] [L26] COND TRUE 1 VAL [x=0] [L16] COND TRUE 1 [L17] x=1 VAL [x=1] [L6] COND TRUE !(cond) VAL [x=1] [L7] reach_error() VAL [x=1] - UnprovableResult [Line: 7]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 529.6ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 33.2ms, AutomataDifference: 51.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 8 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 16.6ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 20.1ms SsaConstructionTime, 67.4ms SatisfiabilityAnalysisTime, 79.0ms InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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! [2021-10-12 23:59:17,945 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_458af9c9-d184-40af-b575-2d12fc176761/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...