./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/NonTermination3-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7feb3db0-7865-4dab-b564-f7d9b1ffc349/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7feb3db0-7865-4dab-b564-f7d9b1ffc349/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7feb3db0-7865-4dab-b564-f7d9b1ffc349/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7feb3db0-7865-4dab-b564-f7d9b1ffc349/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/NonTermination3-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7feb3db0-7865-4dab-b564-f7d9b1ffc349/bin/utaipan-EQgc7hIp5V/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7feb3db0-7865-4dab-b564-f7d9b1ffc349/bin/utaipan-EQgc7hIp5V --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 a0671ae6ff503095cbeea151b096da898df643465964474a4f3e3c55275f454c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:49:26,329 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:49:26,332 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:49:26,384 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:49:26,385 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:49:26,386 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:49:26,388 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:49:26,390 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:49:26,392 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:49:26,394 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:49:26,395 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:49:26,397 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:49:26,397 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:49:26,399 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:49:26,400 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:49:26,402 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:49:26,403 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:49:26,405 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:49:26,411 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:49:26,419 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:49:26,422 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:49:26,427 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:49:26,431 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:49:26,432 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:49:26,438 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:49:26,442 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:49:26,442 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:49:26,444 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:49:26,445 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:49:26,447 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:49:26,448 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:49:26,449 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:49:26,451 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:49:26,452 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:49:26,454 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:49:26,454 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:49:26,455 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:49:26,455 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:49:26,456 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:49:26,457 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:49:26,457 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:49:26,458 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7feb3db0-7865-4dab-b564-f7d9b1ffc349/bin/utaipan-EQgc7hIp5V/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-11-23 02:49:26,509 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:49:26,510 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:49:26,510 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:49:26,511 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:49:26,518 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:49:26,518 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:49:26,518 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:49:26,519 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:49:26,519 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:49:26,519 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:49:26,520 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:49:26,521 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:49:26,521 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:49:26,521 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:49:26,521 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:49:26,522 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:49:26,522 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:49:26,522 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:49:26,523 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:49:26,523 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 02:49:26,523 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:49:26,524 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:49:26,524 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:49:26,524 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:49:26,524 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:49:26,524 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-23 02:49:26,527 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:49:26,527 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:49:26,527 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:49:26,527 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:49:26,527 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:49:26,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:49:26,528 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:49:26,528 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:49:26,528 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:49:26,528 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:49:26,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:49:26,528 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:49:26,528 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:49:26,528 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:49:26,529 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_7feb3db0-7865-4dab-b564-f7d9b1ffc349/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7feb3db0-7865-4dab-b564-f7d9b1ffc349/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0671ae6ff503095cbeea151b096da898df643465964474a4f3e3c55275f454c [2021-11-23 02:49:26,836 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:49:26,871 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:49:26,874 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:49:26,876 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:49:26,876 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:49:26,878 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7feb3db0-7865-4dab-b564-f7d9b1ffc349/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/termination-crafted/NonTermination3-2.c [2021-11-23 02:49:26,961 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7feb3db0-7865-4dab-b564-f7d9b1ffc349/bin/utaipan-EQgc7hIp5V/data/71482eef5/0655343e00ad4a699a1cf664de044d86/FLAG956c50129 [2021-11-23 02:49:27,505 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:49:27,505 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7feb3db0-7865-4dab-b564-f7d9b1ffc349/sv-benchmarks/c/termination-crafted/NonTermination3-2.c [2021-11-23 02:49:27,517 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7feb3db0-7865-4dab-b564-f7d9b1ffc349/bin/utaipan-EQgc7hIp5V/data/71482eef5/0655343e00ad4a699a1cf664de044d86/FLAG956c50129 [2021-11-23 02:49:27,880 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7feb3db0-7865-4dab-b564-f7d9b1ffc349/bin/utaipan-EQgc7hIp5V/data/71482eef5/0655343e00ad4a699a1cf664de044d86 [2021-11-23 02:49:27,882 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:49:27,884 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:49:27,886 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:49:27,886 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:49:27,890 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:49:27,891 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:49:27" (1/1) ... [2021-11-23 02:49:27,894 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@478e9a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:27, skipping insertion in model container [2021-11-23 02:49:27,894 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:49:27" (1/1) ... [2021-11-23 02:49:27,904 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:49:27,920 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:49:28,123 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:49:28,126 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:49:28,143 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:49:28,160 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:49:28,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:28 WrapperNode [2021-11-23 02:49:28,161 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:49:28,163 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:49:28,163 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:49:28,163 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:49:28,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:28" (1/1) ... [2021-11-23 02:49:28,178 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:28" (1/1) ... [2021-11-23 02:49:28,197 INFO L137 Inliner]: procedures = 8, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 44 [2021-11-23 02:49:28,198 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:49:28,199 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:49:28,199 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:49:28,199 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:49:28,207 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:28" (1/1) ... [2021-11-23 02:49:28,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:28" (1/1) ... [2021-11-23 02:49:28,209 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:28" (1/1) ... [2021-11-23 02:49:28,209 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:28" (1/1) ... [2021-11-23 02:49:28,214 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:28" (1/1) ... [2021-11-23 02:49:28,218 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:28" (1/1) ... [2021-11-23 02:49:28,219 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:28" (1/1) ... [2021-11-23 02:49:28,221 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:49:28,222 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:49:28,222 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:49:28,222 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:49:28,223 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:28" (1/1) ... [2021-11-23 02:49:28,231 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:49:28,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7feb3db0-7865-4dab-b564-f7d9b1ffc349/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:49:28,253 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7feb3db0-7865-4dab-b564-f7d9b1ffc349/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:49:28,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7feb3db0-7865-4dab-b564-f7d9b1ffc349/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:49:28,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 02:49:28,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:49:28,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:49:28,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 02:49:28,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:49:28,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:49:28,372 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:49:28,374 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:49:28,546 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:49:28,574 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:49:28,575 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 02:49:28,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:49:28 BoogieIcfgContainer [2021-11-23 02:49:28,578 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:49:28,579 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:49:28,580 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:49:28,583 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:49:28,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:49:27" (1/3) ... [2021-11-23 02:49:28,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8647e74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:49:28, skipping insertion in model container [2021-11-23 02:49:28,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:28" (2/3) ... [2021-11-23 02:49:28,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8647e74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:49:28, skipping insertion in model container [2021-11-23 02:49:28,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:49:28" (3/3) ... [2021-11-23 02:49:28,586 INFO L111 eAbstractionObserver]: Analyzing ICFG NonTermination3-2.c [2021-11-23 02:49:28,592 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:49:28,592 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-23 02:49:28,643 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:49:28,650 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 [2021-11-23 02:49:28,651 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-23 02:49:28,670 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 9 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) [2021-11-23 02:49:28,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-23 02:49:28,685 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:49:28,686 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-23 02:49:28,687 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-11-23 02:49:28,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:49:28,695 INFO L85 PathProgramCache]: Analyzing trace with hash 70475, now seen corresponding path program 1 times [2021-11-23 02:49:28,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:49:28,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319835548] [2021-11-23 02:49:28,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:49:28,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:49:28,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:49:28,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:49:28,896 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:49:28,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319835548] [2021-11-23 02:49:28,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319835548] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:49:28,898 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:49:28,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-23 02:49:28,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545880735] [2021-11-23 02:49:28,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:49:28,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:49:28,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:49:28,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:49:28,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:49:28,947 INFO L87 Difference]: Start difference. First operand has 10 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 9 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) 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) [2021-11-23 02:49:29,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:49:29,030 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2021-11-23 02:49:29,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:49:29,033 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 [2021-11-23 02:49:29,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:49:29,042 INFO L225 Difference]: With dead ends: 18 [2021-11-23 02:49:29,059 INFO L226 Difference]: Without dead ends: 9 [2021-11-23 02:49:29,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:49:29,066 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:49:29,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 5 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:49:29,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-11-23 02:49:29,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2021-11-23 02:49:29,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 6 states have (on average 1.3333333333333333) 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) [2021-11-23 02:49:29,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-11-23 02:49:29,100 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 3 [2021-11-23 02:49:29,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:49:29,100 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-11-23 02:49:29,101 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) [2021-11-23 02:49:29,101 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-11-23 02:49:29,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-23 02:49:29,101 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:49:29,102 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-23 02:49:29,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:49:29,102 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-11-23 02:49:29,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:49:29,104 INFO L85 PathProgramCache]: Analyzing trace with hash 2184770, now seen corresponding path program 1 times [2021-11-23 02:49:29,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:49:29,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941508588] [2021-11-23 02:49:29,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:49:29,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:49:29,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:49:29,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:49:29,133 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:49:29,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941508588] [2021-11-23 02:49:29,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941508588] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:49:29,134 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:49:29,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-23 02:49:29,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280576142] [2021-11-23 02:49:29,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:49:29,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:49:29,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:49:29,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:49:29,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:49:29,138 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2021-11-23 02:49:29,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:49:29,149 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2021-11-23 02:49:29,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:49:29,150 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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 [2021-11-23 02:49:29,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:49:29,151 INFO L225 Difference]: With dead ends: 8 [2021-11-23 02:49:29,151 INFO L226 Difference]: Without dead ends: 7 [2021-11-23 02:49:29,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:49:29,154 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:49:29,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:49:29,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-11-23 02:49:29,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-11-23 02:49:29,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 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) [2021-11-23 02:49:29,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2021-11-23 02:49:29,159 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2021-11-23 02:49:29,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:49:29,159 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2021-11-23 02:49:29,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2021-11-23 02:49:29,160 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2021-11-23 02:49:29,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-23 02:49:29,161 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:49:29,161 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2021-11-23 02:49:29,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:49:29,162 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-11-23 02:49:29,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:49:29,163 INFO L85 PathProgramCache]: Analyzing trace with hash 2099565253, now seen corresponding path program 1 times [2021-11-23 02:49:29,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:49:29,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534536109] [2021-11-23 02:49:29,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:49:29,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:49:29,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:49:29,221 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 02:49:29,222 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:49:29,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534536109] [2021-11-23 02:49:29,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534536109] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:49:29,228 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:49:29,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:49:29,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119632548] [2021-11-23 02:49:29,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:49:29,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:49:29,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:49:29,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:49:29,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:49:29,232 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2021-11-23 02:49:29,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:49:29,252 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2021-11-23 02:49:29,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:49:29,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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 [2021-11-23 02:49:29,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:49:29,253 INFO L225 Difference]: With dead ends: 7 [2021-11-23 02:49:29,254 INFO L226 Difference]: Without dead ends: 0 [2021-11-23 02:49:29,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:49:29,257 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:49:29,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:49:29,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-23 02:49:29,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-23 02:49:29,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-11-23 02:49:29,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-23 02:49:29,266 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2021-11-23 02:49:29,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:49:29,267 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 02:49:29,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2021-11-23 02:49:29,267 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-23 02:49:29,268 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-23 02:49:29,270 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2021-11-23 02:49:29,271 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2021-11-23 02:49:29,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:49:29,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-23 02:49:29,294 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2021-11-23 02:49:29,294 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-23 02:49:29,294 INFO L858 garLoopResultBuilder]: For program point L17-2(lines 17 20) no Hoare annotation was computed. [2021-11-23 02:49:29,295 INFO L858 garLoopResultBuilder]: For program point L17-4(lines 9 22) no Hoare annotation was computed. [2021-11-23 02:49:29,295 INFO L861 garLoopResultBuilder]: At program point L17-5(lines 17 20) the Hoare annotation is: true [2021-11-23 02:49:29,295 INFO L858 garLoopResultBuilder]: For program point L13-2(lines 13 15) no Hoare annotation was computed. [2021-11-23 02:49:29,296 INFO L858 garLoopResultBuilder]: For program point L13-3(line 13) no Hoare annotation was computed. [2021-11-23 02:49:29,296 INFO L854 garLoopResultBuilder]: At program point L13-4(lines 13 15) the Hoare annotation is: (<= 0 |ULTIMATE.start_main_~n~0#1|) [2021-11-23 02:49:29,297 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2021-11-23 02:49:29,298 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-23 02:49:29,302 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-23 02:49:29,305 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 02:49:29,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:49:29 BoogieIcfgContainer [2021-11-23 02:49:29,332 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 02:49:29,334 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 02:49:29,334 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 02:49:29,334 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 02:49:29,340 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:49:28" (3/4) ... [2021-11-23 02:49:29,344 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-23 02:49:29,357 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-11-23 02:49:29,358 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-23 02:49:29,359 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-23 02:49:29,359 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 02:49:29,406 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7feb3db0-7865-4dab-b564-f7d9b1ffc349/bin/utaipan-EQgc7hIp5V/witness.graphml [2021-11-23 02:49:29,407 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 02:49:29,408 INFO L158 Benchmark]: Toolchain (without parser) took 1523.40ms. Allocated memory is still 132.1MB. Free memory was 94.2MB in the beginning and 61.0MB in the end (delta: 33.1MB). Peak memory consumption was 30.8MB. Max. memory is 16.1GB. [2021-11-23 02:49:29,408 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 132.1MB. Free memory was 103.5MB in the beginning and 103.5MB in the end (delta: 21.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:49:29,409 INFO L158 Benchmark]: CACSL2BoogieTranslator took 276.06ms. Allocated memory is still 132.1MB. Free memory was 94.0MB in the beginning and 105.6MB in the end (delta: -11.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 02:49:29,410 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.23ms. Allocated memory is still 132.1MB. Free memory was 105.6MB in the beginning and 104.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 02:49:29,410 INFO L158 Benchmark]: Boogie Preprocessor took 22.51ms. Allocated memory is still 132.1MB. Free memory was 104.3MB in the beginning and 103.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:49:29,411 INFO L158 Benchmark]: RCFGBuilder took 355.99ms. Allocated memory is still 132.1MB. Free memory was 103.0MB in the beginning and 92.9MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 02:49:29,411 INFO L158 Benchmark]: TraceAbstraction took 752.86ms. Allocated memory is still 132.1MB. Free memory was 92.5MB in the beginning and 63.1MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2021-11-23 02:49:29,411 INFO L158 Benchmark]: Witness Printer took 73.03ms. Allocated memory is still 132.1MB. Free memory was 63.1MB in the beginning and 61.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 02:49:29,415 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 132.1MB. Free memory was 103.5MB in the beginning and 103.5MB in the end (delta: 21.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 276.06ms. Allocated memory is still 132.1MB. Free memory was 94.0MB in the beginning and 105.6MB in the end (delta: -11.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.23ms. Allocated memory is still 132.1MB. Free memory was 105.6MB in the beginning and 104.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.51ms. Allocated memory is still 132.1MB. Free memory was 104.3MB in the beginning and 103.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 355.99ms. Allocated memory is still 132.1MB. Free memory was 103.0MB in the beginning and 92.9MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 752.86ms. Allocated memory is still 132.1MB. Free memory was 92.5MB in the beginning and 63.1MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Witness Printer took 73.03ms. Allocated memory is still 132.1MB. Free memory was 63.1MB in the beginning and 61.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4 mSDsluCounter, 5 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 25 IncrementalHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 3 mSDtfsCounter, 25 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 4 HoareAnnotationTreeSize, 2 FomulaSimplifications, 11 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 22 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 2/2 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 0 <= n - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-11-23 02:49:29,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7feb3db0-7865-4dab-b564-f7d9b1ffc349/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE