./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark27_linear.i --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_de61b139-b198-42d6-b040-00da70829f25/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de61b139-b198-42d6-b040-00da70829f25/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_de61b139-b198-42d6-b040-00da70829f25/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de61b139-b198-42d6-b040-00da70829f25/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark27_linear.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de61b139-b198-42d6-b040-00da70829f25/bin/uautomizer-j4sWxH34Be/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de61b139-b198-42d6-b040-00da70829f25/bin/uautomizer-j4sWxH34Be --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 917374027b639c45b575eeb17a4ba7670f94886b4db7d6a64e3f533dbd0231cc ..................................................................................................................................................................................................................................................................................................... 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 [2021-10-21 20:11:54,988 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:11:54,990 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:11:55,035 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:11:55,036 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:11:55,038 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:11:55,040 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:11:55,043 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:11:55,045 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:11:55,046 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:11:55,048 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:11:55,049 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:11:55,050 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:11:55,052 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:11:55,053 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:11:55,055 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:11:55,056 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:11:55,058 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:11:55,060 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:11:55,063 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:11:55,065 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:11:55,067 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:11:55,068 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:11:55,069 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:11:55,074 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:11:55,074 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:11:55,075 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:11:55,076 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:11:55,077 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:11:55,078 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:11:55,079 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:11:55,080 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:11:55,081 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:11:55,082 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:11:55,083 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:11:55,084 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:11:55,085 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:11:55,085 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:11:55,086 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:11:55,087 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:11:55,088 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:11:55,089 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de61b139-b198-42d6-b040-00da70829f25/bin/uautomizer-j4sWxH34Be/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-10-21 20:11:55,119 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:11:55,119 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:11:55,120 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:11:55,120 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:11:55,122 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:11:55,122 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:11:55,123 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:11:55,123 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:11:55,124 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:11:55,124 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 20:11:55,124 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:11:55,125 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:11:55,125 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:11:55,125 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 20:11:55,126 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:11:55,126 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 20:11:55,126 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-21 20:11:55,127 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:11:55,127 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:11:55,127 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:11:55,128 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 20:11:55,128 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:11:55,129 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:11:55,129 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:11:55,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:11:55,130 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:11:55,130 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:11:55,130 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 20:11:55,131 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:11:55,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 20:11:55,131 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 20:11:55,132 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:11:55,132 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_de61b139-b198-42d6-b040-00da70829f25/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de61b139-b198-42d6-b040-00da70829f25/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 917374027b639c45b575eeb17a4ba7670f94886b4db7d6a64e3f533dbd0231cc [2021-10-21 20:11:55,432 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:11:55,458 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:11:55,461 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:11:55,463 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:11:55,464 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:11:55,465 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de61b139-b198-42d6-b040-00da70829f25/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/loop-zilu/benchmark27_linear.i [2021-10-21 20:11:55,557 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de61b139-b198-42d6-b040-00da70829f25/bin/uautomizer-j4sWxH34Be/data/ca046f5c5/cf5fc7af269a48dea2e95b187b1244e2/FLAG8e9dd4529 [2021-10-21 20:11:56,171 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:11:56,175 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de61b139-b198-42d6-b040-00da70829f25/sv-benchmarks/c/loop-zilu/benchmark27_linear.i [2021-10-21 20:11:56,188 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de61b139-b198-42d6-b040-00da70829f25/bin/uautomizer-j4sWxH34Be/data/ca046f5c5/cf5fc7af269a48dea2e95b187b1244e2/FLAG8e9dd4529 [2021-10-21 20:11:56,506 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de61b139-b198-42d6-b040-00da70829f25/bin/uautomizer-j4sWxH34Be/data/ca046f5c5/cf5fc7af269a48dea2e95b187b1244e2 [2021-10-21 20:11:56,508 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:11:56,510 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:11:56,512 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:11:56,512 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:11:56,523 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:11:56,524 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:11:56" (1/1) ... [2021-10-21 20:11:56,525 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c40c7f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:11:56, skipping insertion in model container [2021-10-21 20:11:56,526 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:11:56" (1/1) ... [2021-10-21 20:11:56,538 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:11:56,556 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:11:56,763 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_de61b139-b198-42d6-b040-00da70829f25/sv-benchmarks/c/loop-zilu/benchmark27_linear.i[868,881] [2021-10-21 20:11:56,775 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:11:56,785 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:11:56,801 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_de61b139-b198-42d6-b040-00da70829f25/sv-benchmarks/c/loop-zilu/benchmark27_linear.i[868,881] [2021-10-21 20:11:56,805 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:11:56,821 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:11:56,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:11:56 WrapperNode [2021-10-21 20:11:56,822 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:11:56,824 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:11:56,824 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:11:56,824 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:11:56,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:11:56" (1/1) ... [2021-10-21 20:11:56,841 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:11:56" (1/1) ... [2021-10-21 20:11:56,863 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:11:56,864 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:11:56,865 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:11:56,865 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:11:56,874 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:11:56" (1/1) ... [2021-10-21 20:11:56,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:11:56" (1/1) ... [2021-10-21 20:11:56,876 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:11:56" (1/1) ... [2021-10-21 20:11:56,877 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:11:56" (1/1) ... [2021-10-21 20:11:56,881 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:11:56" (1/1) ... [2021-10-21 20:11:56,885 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:11:56" (1/1) ... [2021-10-21 20:11:56,886 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:11:56" (1/1) ... [2021-10-21 20:11:56,888 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:11:56,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:11:56,890 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:11:56,890 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:11:56,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:11:56" (1/1) ... [2021-10-21 20:11:56,906 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:11:56,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de61b139-b198-42d6-b040-00da70829f25/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:11:56,946 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de61b139-b198-42d6-b040-00da70829f25/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:11:56,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de61b139-b198-42d6-b040-00da70829f25/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:11:57,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 20:11:57,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:11:57,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:11:57,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:11:57,309 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:11:57,309 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-21 20:11:57,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:11:57 BoogieIcfgContainer [2021-10-21 20:11:57,311 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:11:57,314 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:11:57,314 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:11:57,318 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:11:57,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:11:56" (1/3) ... [2021-10-21 20:11:57,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50ae9379 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:11:57, skipping insertion in model container [2021-10-21 20:11:57,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:11:56" (2/3) ... [2021-10-21 20:11:57,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50ae9379 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:11:57, skipping insertion in model container [2021-10-21 20:11:57,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:11:57" (3/3) ... [2021-10-21 20:11:57,321 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark27_linear.i [2021-10-21 20:11:57,327 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:11:57,327 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-21 20:11:57,383 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:11:57,399 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 [2021-10-21 20:11:57,399 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-21 20:11:57,428 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.6875) internal successors, (27), 22 states have internal predecessors, (27), 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) [2021-10-21 20:11:57,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-21 20:11:57,439 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:11:57,439 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-21 20:11:57,440 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 20:11:57,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:11:57,446 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2021-10-21 20:11:57,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:11:57,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022723355] [2021-10-21 20:11:57,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:11:57,459 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:11:57,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:11:57,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:11:57,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:11:57,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022723355] [2021-10-21 20:11:57,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022723355] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:11:57,695 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:11:57,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:11:57,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973278010] [2021-10-21 20:11:57,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 20:11:57,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:11:57,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 20:11:57,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 20:11:57,721 INFO L87 Difference]: Start difference. First operand has 23 states, 16 states have (on average 1.6875) internal successors, (27), 22 states have internal predecessors, (27), 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 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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) [2021-10-21 20:11:57,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:11:57,802 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2021-10-21 20:11:57,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 20:11:57,804 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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 4 [2021-10-21 20:11:57,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:11:57,813 INFO L225 Difference]: With dead ends: 34 [2021-10-21 20:11:57,813 INFO L226 Difference]: Without dead ends: 18 [2021-10-21 20:11:57,819 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 20:11:57,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-21 20:11:57,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2021-10-21 20:11:57,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:11:57,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2021-10-21 20:11:57,862 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 4 [2021-10-21 20:11:57,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:11:57,863 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-10-21 20:11:57,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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) [2021-10-21 20:11:57,865 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2021-10-21 20:11:57,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-21 20:11:57,865 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:11:57,866 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-21 20:11:57,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 20:11:57,866 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 20:11:57,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:11:57,873 INFO L82 PathProgramCache]: Analyzing trace with hash 28693763, now seen corresponding path program 1 times [2021-10-21 20:11:57,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:11:57,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671943210] [2021-10-21 20:11:57,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:11:57,875 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:11:57,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:11:57,926 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:11:57,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:11:57,997 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:11:57,998 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 20:11:58,000 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:11:58,002 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:11:58,002 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:11:58,003 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:11:58,003 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:11:58,003 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:11:58,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 20:11:58,010 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:11:58,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:11:58 BoogieIcfgContainer [2021-10-21 20:11:58,029 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:11:58,030 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:11:58,030 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:11:58,030 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:11:58,031 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:11:57" (3/4) ... [2021-10-21 20:11:58,033 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-21 20:11:58,070 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de61b139-b198-42d6-b040-00da70829f25/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 20:11:58,070 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:11:58,072 INFO L168 Benchmark]: Toolchain (without parser) took 1561.04 ms. Allocated memory is still 125.8 MB. Free memory was 93.4 MB in the beginning and 63.7 MB in the end (delta: 29.7 MB). Peak memory consumption was 26.6 MB. Max. memory is 16.1 GB. [2021-10-21 20:11:58,073 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 83.9 MB. Free memory is still 42.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:11:58,074 INFO L168 Benchmark]: CACSL2BoogieTranslator took 311.40 ms. Allocated memory is still 125.8 MB. Free memory was 93.1 MB in the beginning and 101.9 MB in the end (delta: -8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:11:58,074 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.73 ms. Allocated memory is still 125.8 MB. Free memory was 101.9 MB in the beginning and 100.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:11:58,075 INFO L168 Benchmark]: Boogie Preprocessor took 24.18 ms. Allocated memory is still 125.8 MB. Free memory was 100.3 MB in the beginning and 99.3 MB in the end (delta: 979.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:11:58,076 INFO L168 Benchmark]: RCFGBuilder took 422.25 ms. Allocated memory is still 125.8 MB. Free memory was 99.3 MB in the beginning and 89.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:11:58,077 INFO L168 Benchmark]: TraceAbstraction took 715.54 ms. Allocated memory is still 125.8 MB. Free memory was 89.4 MB in the beginning and 65.1 MB in the end (delta: 24.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-21 20:11:58,077 INFO L168 Benchmark]: Witness Printer took 40.31 ms. Allocated memory is still 125.8 MB. Free memory was 65.1 MB in the beginning and 63.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:11:58,082 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 83.9 MB. Free memory is still 42.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 311.40 ms. Allocated memory is still 125.8 MB. Free memory was 93.1 MB in the beginning and 101.9 MB in the end (delta: -8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.73 ms. Allocated memory is still 125.8 MB. Free memory was 101.9 MB in the beginning and 100.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.18 ms. Allocated memory is still 125.8 MB. Free memory was 100.3 MB in the beginning and 99.3 MB in the end (delta: 979.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 422.25 ms. Allocated memory is still 125.8 MB. Free memory was 99.3 MB in the beginning and 89.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 715.54 ms. Allocated memory is still 125.8 MB. Free memory was 89.4 MB in the beginning and 65.1 MB in the end (delta: 24.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * Witness Printer took 40.31 ms. Allocated memory is still 125.8 MB. Free memory was 65.1 MB in the beginning and 63.7 MB in the end (delta: 1.4 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: 23]: integer overflow possible integer overflow possible We found a FailurePath: [L20] int i = __VERIFIER_nondet_int(); [L21] int j = __VERIFIER_nondet_int(); [L22] int k = __VERIFIER_nondet_int(); [L23] ii-j [L23] i-j - UnprovableResult [Line: 23]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 25]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 25]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 26]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 26]: 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, 23 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 627.2ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 16.0ms, AutomataDifference: 112.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 23.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 16 SDtfs, 16 SDslu, 12 SDs, 0 SdLazy, 20 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 35.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 24.5ms AutomataMinimizationTime, 1 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 8.7ms SsaConstructionTime, 73.3ms SatisfiabilityAnalysisTime, 103.6ms InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 14 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! [2021-10-21 20:11:58,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de61b139-b198-42d6-b040-00da70829f25/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...