./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Copenhagen_disj-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbd6ada-b9ad-4069-8f21-c3359e27c2eb/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbd6ada-b9ad-4069-8f21-c3359e27c2eb/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbd6ada-b9ad-4069-8f21-c3359e27c2eb/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbd6ada-b9ad-4069-8f21-c3359e27c2eb/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/Copenhagen_disj-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbd6ada-b9ad-4069-8f21-c3359e27c2eb/bin/utaipan-9zjyvhn0QE/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbd6ada-b9ad-4069-8f21-c3359e27c2eb/bin/utaipan-9zjyvhn0QE --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1d01e47d61f5460eefe4585d287e283c2c540ff348367265b7ce8811693dcaeb ............................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 09:56:32,895 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 09:56:32,896 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 09:56:32,942 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 09:56:32,943 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 09:56:32,947 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 09:56:32,949 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 09:56:32,953 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 09:56:32,956 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 09:56:32,961 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 09:56:32,962 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 09:56:32,964 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 09:56:32,965 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 09:56:32,968 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 09:56:32,971 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 09:56:32,979 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 09:56:32,981 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 09:56:32,982 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 09:56:32,984 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 09:56:32,992 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 09:56:32,994 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 09:56:32,997 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 09:56:32,999 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 09:56:33,000 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 09:56:33,003 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 09:56:33,003 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 09:56:33,004 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 09:56:33,005 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 09:56:33,005 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 09:56:33,006 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 09:56:33,007 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 09:56:33,008 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 09:56:33,008 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 09:56:33,009 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 09:56:33,010 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 09:56:33,010 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 09:56:33,011 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 09:56:33,011 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 09:56:33,012 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 09:56:33,012 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 09:56:33,013 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 09:56:33,014 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbd6ada-b9ad-4069-8f21-c3359e27c2eb/bin/utaipan-9zjyvhn0QE/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-10-24 09:56:33,039 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 09:56:33,039 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 09:56:33,040 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 09:56:33,040 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 09:56:33,040 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 09:56:33,041 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 09:56:33,041 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 09:56:33,041 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 09:56:33,041 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 09:56:33,041 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 09:56:33,041 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 09:56:33,041 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 09:56:33,041 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 09:56:33,042 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 09:56:33,042 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 09:56:33,042 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 09:56:33,042 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-24 09:56:33,042 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 09:56:33,042 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 09:56:33,043 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 09:56:33,043 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 09:56:33,043 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 09:56:33,043 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-24 09:56:33,043 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 09:56:33,043 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 09:56:33,043 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 09:56:33,043 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 09:56:33,044 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 09:56:33,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:56:33,044 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 09:56:33,044 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 09:56:33,044 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 09:56:33,044 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 09:56:33,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 09:56:33,046 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 09:56:33,046 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 09:56:33,048 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 09:56:33,048 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_4fbd6ada-b9ad-4069-8f21-c3359e27c2eb/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbd6ada-b9ad-4069-8f21-c3359e27c2eb/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d01e47d61f5460eefe4585d287e283c2c540ff348367265b7ce8811693dcaeb [2021-10-24 09:56:33,343 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 09:56:33,371 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 09:56:33,374 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 09:56:33,375 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 09:56:33,376 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 09:56:33,378 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbd6ada-b9ad-4069-8f21-c3359e27c2eb/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/termination-crafted/Copenhagen_disj-1.c [2021-10-24 09:56:33,446 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbd6ada-b9ad-4069-8f21-c3359e27c2eb/bin/utaipan-9zjyvhn0QE/data/7f8c08f2f/46704b2bc20546d0a1d0caffec34a5d5/FLAG29bb93923 [2021-10-24 09:56:33,952 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 09:56:33,953 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbd6ada-b9ad-4069-8f21-c3359e27c2eb/sv-benchmarks/c/termination-crafted/Copenhagen_disj-1.c [2021-10-24 09:56:33,962 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbd6ada-b9ad-4069-8f21-c3359e27c2eb/bin/utaipan-9zjyvhn0QE/data/7f8c08f2f/46704b2bc20546d0a1d0caffec34a5d5/FLAG29bb93923 [2021-10-24 09:56:34,345 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbd6ada-b9ad-4069-8f21-c3359e27c2eb/bin/utaipan-9zjyvhn0QE/data/7f8c08f2f/46704b2bc20546d0a1d0caffec34a5d5 [2021-10-24 09:56:34,349 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 09:56:34,351 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 09:56:34,358 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 09:56:34,358 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 09:56:34,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 09:56:34,364 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:56:34" (1/1) ... [2021-10-24 09:56:34,366 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45fe2885 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:34, skipping insertion in model container [2021-10-24 09:56:34,367 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:56:34" (1/1) ... [2021-10-24 09:56:34,378 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 09:56:34,401 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 09:56:34,623 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:56:34,646 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 09:56:34,662 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:56:34,674 INFO L208 MainTranslator]: Completed translation [2021-10-24 09:56:34,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:34 WrapperNode [2021-10-24 09:56:34,675 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 09:56:34,677 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 09:56:34,677 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 09:56:34,677 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 09:56:34,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:34" (1/1) ... [2021-10-24 09:56:34,690 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:34" (1/1) ... [2021-10-24 09:56:34,710 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 09:56:34,712 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 09:56:34,712 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 09:56:34,712 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 09:56:34,729 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:34" (1/1) ... [2021-10-24 09:56:34,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:34" (1/1) ... [2021-10-24 09:56:34,730 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:34" (1/1) ... [2021-10-24 09:56:34,731 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:34" (1/1) ... [2021-10-24 09:56:34,735 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:34" (1/1) ... [2021-10-24 09:56:34,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:34" (1/1) ... [2021-10-24 09:56:34,741 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:34" (1/1) ... [2021-10-24 09:56:34,748 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 09:56:34,749 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 09:56:34,750 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 09:56:34,750 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 09:56:34,751 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:34" (1/1) ... [2021-10-24 09:56:34,761 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:56:34,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbd6ada-b9ad-4069-8f21-c3359e27c2eb/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:56:34,790 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbd6ada-b9ad-4069-8f21-c3359e27c2eb/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 09:56:34,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbd6ada-b9ad-4069-8f21-c3359e27c2eb/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 09:56:34,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 09:56:34,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 09:56:35,087 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 09:56:35,092 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-24 09:56:35,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:56:35 BoogieIcfgContainer [2021-10-24 09:56:35,095 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 09:56:35,097 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 09:56:35,098 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 09:56:35,102 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 09:56:35,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:56:34" (1/3) ... [2021-10-24 09:56:35,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29ef7589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:56:35, skipping insertion in model container [2021-10-24 09:56:35,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:34" (2/3) ... [2021-10-24 09:56:35,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29ef7589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:56:35, skipping insertion in model container [2021-10-24 09:56:35,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:56:35" (3/3) ... [2021-10-24 09:56:35,106 INFO L111 eAbstractionObserver]: Analyzing ICFG Copenhagen_disj-1.c [2021-10-24 09:56:35,113 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 09:56:35,114 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-10-24 09:56:35,173 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 09:56:35,180 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=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 [2021-10-24 09:56:35,180 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-24 09:56:35,198 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:56:35,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-24 09:56:35,202 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:56:35,203 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-24 09:56:35,204 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-24 09:56:35,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:56:35,210 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2021-10-24 09:56:35,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:56:35,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764996411] [2021-10-24 09:56:35,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:56:35,222 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:56:35,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:56:35,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:56:35,361 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:56:35,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764996411] [2021-10-24 09:56:35,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764996411] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:56:35,362 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:56:35,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-24 09:56:35,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275971326] [2021-10-24 09:56:35,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 09:56:35,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:56:35,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 09:56:35,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:56:35,393 INFO L87 Difference]: Start difference. First operand has 11 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-10-24 09:56:35,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:56:35,466 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-10-24 09:56:35,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 09:56:35,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2021-10-24 09:56:35,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:56:35,478 INFO L225 Difference]: With dead ends: 19 [2021-10-24 09:56:35,479 INFO L226 Difference]: Without dead ends: 17 [2021-10-24 09:56:35,482 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:56:35,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-24 09:56:35,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 12. [2021-10-24 09:56:35,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 8 states have (on average 1.5) internal successors, (12), 11 states have internal predecessors, (12), 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) [2021-10-24 09:56:35,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-10-24 09:56:35,527 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 3 [2021-10-24 09:56:35,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:56:35,539 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-10-24 09:56:35,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-10-24 09:56:35,540 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-10-24 09:56:35,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-24 09:56:35,541 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:56:35,541 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-24 09:56:35,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 09:56:35,542 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-24 09:56:35,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:56:35,543 INFO L82 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2021-10-24 09:56:35,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:56:35,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689452713] [2021-10-24 09:56:35,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:56:35,557 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:56:35,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 09:56:35,582 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 09:56:35,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 09:56:35,615 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-24 09:56:35,616 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 09:56:35,617 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 09:56:35,619 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 09:56:35,619 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 09:56:35,619 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 09:56:35,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-24 09:56:35,625 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 09:56:35,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:56:35 BoogieIcfgContainer [2021-10-24 09:56:35,635 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 09:56:35,636 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 09:56:35,636 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 09:56:35,637 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 09:56:35,637 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:56:35" (3/4) ... [2021-10-24 09:56:35,639 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-24 09:56:35,675 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbd6ada-b9ad-4069-8f21-c3359e27c2eb/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 09:56:35,675 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 09:56:35,677 INFO L168 Benchmark]: Toolchain (without parser) took 1325.60 ms. Allocated memory is still 119.5 MB. Free memory was 89.2 MB in the beginning and 63.4 MB in the end (delta: 25.8 MB). Peak memory consumption was 21.9 MB. Max. memory is 16.1 GB. [2021-10-24 09:56:35,678 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 88.1 MB. Free memory is still 44.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:56:35,679 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.97 ms. Allocated memory is still 119.5 MB. Free memory was 89.2 MB in the beginning and 97.0 MB in the end (delta: -7.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 09:56:35,679 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.71 ms. Allocated memory is still 119.5 MB. Free memory was 97.0 MB in the beginning and 95.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:56:35,680 INFO L168 Benchmark]: Boogie Preprocessor took 36.41 ms. Allocated memory is still 119.5 MB. Free memory was 95.8 MB in the beginning and 95.0 MB in the end (delta: 812.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:56:35,681 INFO L168 Benchmark]: RCFGBuilder took 346.21 ms. Allocated memory is still 119.5 MB. Free memory was 95.0 MB in the beginning and 86.1 MB in the end (delta: 8.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 09:56:35,681 INFO L168 Benchmark]: TraceAbstraction took 538.46 ms. Allocated memory is still 119.5 MB. Free memory was 85.3 MB in the beginning and 64.8 MB in the end (delta: 20.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-24 09:56:35,682 INFO L168 Benchmark]: Witness Printer took 39.20 ms. Allocated memory is still 119.5 MB. Free memory was 64.8 MB in the beginning and 63.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:56:35,685 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 88.1 MB. Free memory is still 44.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 317.97 ms. Allocated memory is still 119.5 MB. Free memory was 89.2 MB in the beginning and 97.0 MB in the end (delta: -7.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.71 ms. Allocated memory is still 119.5 MB. Free memory was 97.0 MB in the beginning and 95.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.41 ms. Allocated memory is still 119.5 MB. Free memory was 95.8 MB in the beginning and 95.0 MB in the end (delta: 812.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 346.21 ms. Allocated memory is still 119.5 MB. Free memory was 95.0 MB in the beginning and 86.1 MB in the end (delta: 8.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 538.46 ms. Allocated memory is still 119.5 MB. Free memory was 85.3 MB in the beginning and 64.8 MB in the end (delta: 20.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Witness Printer took 39.20 ms. Allocated memory is still 119.5 MB. Free memory was 64.8 MB in the beginning and 63.4 MB in the end (delta: 1.3 MB). There was no memory consumed. 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: 18]: integer overflow possible integer overflow possible We found a FailurePath: [L13] int x, y, oldx; [L14] x = __VERIFIER_nondet_int() [L15] y = __VERIFIER_nondet_int() [L16] COND TRUE x >= 0 || y >= 0 [L17] oldx = x [L18] y - 1 - UnprovableResult [Line: 18]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 19]: 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 CFG has 1 procedures, 11 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 452.7ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 11.0ms, AutomataDifference: 110.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 6 SDtfs, 7 SDslu, 3 SDs, 0 SdLazy, 10 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 47.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=1, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 27.9ms AutomataMinimizationTime, 1 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 5.1ms SsaConstructionTime, 37.6ms SatisfiabilityAnalysisTime, 59.2ms InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 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! [2021-10-24 09:56:35,736 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbd6ada-b9ad-4069-8f21-c3359e27c2eb/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...