./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6c5b13-aa57-4b1c-a97d-c2ce0f8e7c2d/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6c5b13-aa57-4b1c-a97d-c2ce0f8e7c2d/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6c5b13-aa57-4b1c-a97d-c2ce0f8e7c2d/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6c5b13-aa57-4b1c-a97d-c2ce0f8e7c2d/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6c5b13-aa57-4b1c-a97d-c2ce0f8e7c2d/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6c5b13-aa57-4b1c-a97d-c2ce0f8e7c2d/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 88db4f899985533bd0eb44a0b6d1dd6eb09600fb ....................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:58:48,869 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:58:48,871 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:58:48,915 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:58:48,916 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:58:48,920 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:58:48,922 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:58:48,925 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:58:48,928 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:58:48,934 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:58:48,935 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:58:48,936 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:58:48,937 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:58:48,940 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:58:48,943 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:58:48,948 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:58:48,950 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:58:48,951 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:58:48,953 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:58:48,961 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:58:48,963 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:58:48,965 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:58:48,968 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:58:48,969 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:58:48,978 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:58:48,978 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:58:48,979 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:58:48,981 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:58:48,981 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:58:48,983 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:58:48,983 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:58:48,984 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:58:48,986 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:58:48,987 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:58:48,989 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:58:48,989 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:58:48,989 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:58:48,990 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:58:48,990 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:58:48,991 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:58:48,992 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:58:48,992 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6c5b13-aa57-4b1c-a97d-c2ce0f8e7c2d/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:58:49,042 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:58:49,043 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:58:49,044 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:58:49,044 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:58:49,044 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:58:49,044 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:58:49,045 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:58:49,045 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:58:49,045 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:58:49,045 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:58:49,052 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:58:49,052 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:58:49,052 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:58:49,053 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:58:49,053 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:58:49,054 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:58:49,054 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:58:49,054 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:58:49,054 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:58:49,054 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:58:49,055 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:58:49,055 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:58:49,055 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:58:49,055 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:58:49,055 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:58:49,056 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:58:49,056 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:58:49,056 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:58:49,056 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:58:49,058 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:58:49,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:58:49,058 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:58:49,058 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:58:49,059 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:58:49,059 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:58:49,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:58:49,059 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:58:49,059 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:58:49,060 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:58:49,060 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_ea6c5b13-aa57-4b1c-a97d-c2ce0f8e7c2d/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6c5b13-aa57-4b1c-a97d-c2ce0f8e7c2d/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 88db4f899985533bd0eb44a0b6d1dd6eb09600fb [2021-10-13 07:58:49,284 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:58:49,304 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:58:49,307 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:58:49,308 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:58:49,309 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:58:49,309 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6c5b13-aa57-4b1c-a97d-c2ce0f8e7c2d/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound1.c [2021-10-13 07:58:49,396 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6c5b13-aa57-4b1c-a97d-c2ce0f8e7c2d/bin/utaipan-q2qaUkNPG8/data/41138cb62/c620a52e9c3246deaa25fc02625173a5/FLAGee9d0680c [2021-10-13 07:58:49,876 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:58:49,876 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6c5b13-aa57-4b1c-a97d-c2ce0f8e7c2d/sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound1.c [2021-10-13 07:58:49,890 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6c5b13-aa57-4b1c-a97d-c2ce0f8e7c2d/bin/utaipan-q2qaUkNPG8/data/41138cb62/c620a52e9c3246deaa25fc02625173a5/FLAGee9d0680c [2021-10-13 07:58:50,245 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6c5b13-aa57-4b1c-a97d-c2ce0f8e7c2d/bin/utaipan-q2qaUkNPG8/data/41138cb62/c620a52e9c3246deaa25fc02625173a5 [2021-10-13 07:58:50,247 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:58:50,248 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:58:50,256 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:58:50,257 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:58:50,274 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:58:50,274 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:58:50" (1/1) ... [2021-10-13 07:58:50,275 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e17f20d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:50, skipping insertion in model container [2021-10-13 07:58:50,275 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:58:50" (1/1) ... [2021-10-13 07:58:50,280 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:58:50,294 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:58:50,460 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_ea6c5b13-aa57-4b1c-a97d-c2ce0f8e7c2d/sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound1.c[537,550] [2021-10-13 07:58:50,475 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:58:50,483 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:58:50,495 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_ea6c5b13-aa57-4b1c-a97d-c2ce0f8e7c2d/sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound1.c[537,550] [2021-10-13 07:58:50,503 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:58:50,515 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:58:50,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:50 WrapperNode [2021-10-13 07:58:50,516 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:58:50,517 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:58:50,517 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:58:50,517 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:58:50,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:50" (1/1) ... [2021-10-13 07:58:50,531 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:50" (1/1) ... [2021-10-13 07:58:50,552 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:58:50,553 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:58:50,553 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:58:50,553 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:58:50,562 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:50" (1/1) ... [2021-10-13 07:58:50,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:50" (1/1) ... [2021-10-13 07:58:50,564 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:50" (1/1) ... [2021-10-13 07:58:50,564 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:50" (1/1) ... [2021-10-13 07:58:50,569 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:50" (1/1) ... [2021-10-13 07:58:50,574 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:50" (1/1) ... [2021-10-13 07:58:50,575 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:50" (1/1) ... [2021-10-13 07:58:50,577 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:58:50,578 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:58:50,578 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:58:50,578 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:58:50,589 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:50" (1/1) ... [2021-10-13 07:58:50,597 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:58:50,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6c5b13-aa57-4b1c-a97d-c2ce0f8e7c2d/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:58:50,622 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6c5b13-aa57-4b1c-a97d-c2ce0f8e7c2d/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:58:50,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6c5b13-aa57-4b1c-a97d-c2ce0f8e7c2d/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:58:50,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:58:50,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:58:50,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:58:50,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:58:51,250 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:58:51,251 INFO L299 CfgBuilder]: Removed 21 assume(true) statements. [2021-10-13 07:58:51,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:58:51 BoogieIcfgContainer [2021-10-13 07:58:51,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:58:51,255 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:58:51,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:58:51,260 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:58:51,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:58:50" (1/3) ... [2021-10-13 07:58:51,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@81e1957 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:58:51, skipping insertion in model container [2021-10-13 07:58:51,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:50" (2/3) ... [2021-10-13 07:58:51,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@81e1957 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:58:51, skipping insertion in model container [2021-10-13 07:58:51,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:58:51" (3/3) ... [2021-10-13 07:58:51,263 INFO L111 eAbstractionObserver]: Analyzing ICFG lcm2_valuebound1.c [2021-10-13 07:58:51,268 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:58:51,268 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-13 07:58:51,336 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:58:51,343 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:58:51,343 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-13 07:58:51,374 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 11 states have internal predecessors, (15), 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) [2021-10-13 07:58:51,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 07:58:51,378 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:58:51,379 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 07:58:51,379 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:58:51,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:58:51,386 INFO L82 PathProgramCache]: Analyzing trace with hash 4432004, now seen corresponding path program 1 times [2021-10-13 07:58:51,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:58:51,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991525981] [2021-10-13 07:58:51,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:58:51,397 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:58:51,503 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 07:58:51,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1972708334] [2021-10-13 07:58:51,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:58:51,505 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:58:51,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6c5b13-aa57-4b1c-a97d-c2ce0f8e7c2d/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:58:51,509 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6c5b13-aa57-4b1c-a97d-c2ce0f8e7c2d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:58:51,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6c5b13-aa57-4b1c-a97d-c2ce0f8e7c2d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 07:58:51,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:58:51,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 07:58:51,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:58:51,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:58:51,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:58:51,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:58:51,875 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:58:51,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991525981] [2021-10-13 07:58:51,876 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 07:58:51,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972708334] [2021-10-13 07:58:51,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972708334] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:58:51,877 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:58:51,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:58:51,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267193875] [2021-10-13 07:58:51,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:58:51,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:58:51,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:58:51,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:58:51,898 INFO L87 Difference]: Start difference. First operand has 12 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 11 states have internal predecessors, (15), 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 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:58:53,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:58:53,992 INFO L93 Difference]: Finished difference Result 31 states and 41 transitions. [2021-10-13 07:58:53,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:58:53,994 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 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 4 [2021-10-13 07:58:53,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:58:54,001 INFO L225 Difference]: With dead ends: 31 [2021-10-13 07:58:54,001 INFO L226 Difference]: Without dead ends: 14 [2021-10-13 07:58:54,004 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.1ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:58:54,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-13 07:58:54,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2021-10-13 07:58:54,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 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) [2021-10-13 07:58:54,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-10-13 07:58:54,028 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 4 [2021-10-13 07:58:54,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:58:54,029 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-10-13 07:58:54,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:58:54,029 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-10-13 07:58:54,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 07:58:54,030 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:58:54,030 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2021-10-13 07:58:54,050 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6c5b13-aa57-4b1c-a97d-c2ce0f8e7c2d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-13 07:58:54,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6c5b13-aa57-4b1c-a97d-c2ce0f8e7c2d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-13 07:58:54,231 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:58:54,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:58:54,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1104233458, now seen corresponding path program 1 times [2021-10-13 07:58:54,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:58:54,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930294748] [2021-10-13 07:58:54,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:58:54,233 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:58:54,255 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 07:58:54,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [935531693] [2021-10-13 07:58:54,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:58:54,256 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:58:54,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6c5b13-aa57-4b1c-a97d-c2ce0f8e7c2d/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:58:54,257 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6c5b13-aa57-4b1c-a97d-c2ce0f8e7c2d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:58:54,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6c5b13-aa57-4b1c-a97d-c2ce0f8e7c2d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 07:58:54,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:58:54,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 07:58:54,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:58:54,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:58:54,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:58:54,588 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:58:54,588 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:58:54,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930294748] [2021-10-13 07:58:54,589 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 07:58:54,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935531693] [2021-10-13 07:58:54,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935531693] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:58:54,592 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:58:54,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-13 07:58:54,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981831000] [2021-10-13 07:58:54,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:58:54,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:58:54,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:58:54,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:58:54,601 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:58:54,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:58:54,606 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2021-10-13 07:58:54,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:58:54,607 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-13 07:58:54,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:58:54,608 INFO L225 Difference]: With dead ends: 13 [2021-10-13 07:58:54,608 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 07:58:54,614 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:58:54,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 07:58:54,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 07:58:54,615 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) [2021-10-13 07:58:54,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 07:58:54,615 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2021-10-13 07:58:54,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:58:54,616 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 07:58:54,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:58:54,616 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 07:58:54,617 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 07:58:54,619 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:58:54,620 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:58:54,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6c5b13-aa57-4b1c-a97d-c2ce0f8e7c2d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:58:54,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6c5b13-aa57-4b1c-a97d-c2ce0f8e7c2d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:58:54,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 07:58:54,845 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:58:54,864 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:58:54,870 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:58:54,910 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-13 07:58:54,911 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 07:58:54,911 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-13 07:58:54,911 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2021-10-13 07:58:54,911 INFO L853 garLoopResultBuilder]: At program point L12-2(lines 40 41) the Hoare annotation is: (let ((.cse0 (mod ULTIMATE.start_main_~y~0 4294967296)) (.cse1 (mod ULTIMATE.start_main_~x~0 4294967296))) (and (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 .cse0) (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~v~0) (<= .cse0 1) (<= .cse1 1) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~u~0) (<= 1 .cse1) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))) [2021-10-13 07:58:54,911 INFO L857 garLoopResultBuilder]: For program point L12-3(lines 12 15) no Hoare annotation was computed. [2021-10-13 07:58:54,912 INFO L860 garLoopResultBuilder]: At program point L12-5(lines 11 17) the Hoare annotation is: true [2021-10-13 07:58:54,912 INFO L857 garLoopResultBuilder]: For program point L37-2(lines 37 50) no Hoare annotation was computed. [2021-10-13 07:58:54,912 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 07:58:54,912 INFO L857 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-10-13 07:58:54,912 INFO L857 garLoopResultBuilder]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2021-10-13 07:58:54,912 INFO L853 garLoopResultBuilder]: At program point L43-2(lines 37 50) the Hoare annotation is: (let ((.cse0 (mod ULTIMATE.start_main_~y~0 4294967296)) (.cse1 (mod ULTIMATE.start_main_~x~0 4294967296))) (and (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) (<= 1 .cse0) (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~v~0) (<= .cse0 1) (<= .cse1 1) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~u~0) (<= 1 .cse1) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))) [2021-10-13 07:58:54,916 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:58:54,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:58:54 BoogieIcfgContainer [2021-10-13 07:58:54,930 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:58:54,930 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:58:54,930 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:58:54,931 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:58:54,931 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:58:51" (3/4) ... [2021-10-13 07:58:54,934 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 07:58:54,944 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2021-10-13 07:58:54,944 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-10-13 07:58:54,945 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 07:58:54,945 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:58:54,945 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:58:54,987 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6c5b13-aa57-4b1c-a97d-c2ce0f8e7c2d/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:58:54,987 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:58:54,988 INFO L168 Benchmark]: Toolchain (without parser) took 4739.06 ms. Allocated memory was 100.7 MB in the beginning and 136.3 MB in the end (delta: 35.7 MB). Free memory was 67.3 MB in the beginning and 84.5 MB in the end (delta: -17.2 MB). Peak memory consumption was 17.3 MB. Max. memory is 16.1 GB. [2021-10-13 07:58:54,989 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 100.7 MB. Free memory is still 53.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:58:54,989 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.14 ms. Allocated memory is still 100.7 MB. Free memory was 67.1 MB in the beginning and 75.6 MB in the end (delta: -8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:58:54,990 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.26 ms. Allocated memory is still 100.7 MB. Free memory was 75.6 MB in the beginning and 73.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:58:54,990 INFO L168 Benchmark]: Boogie Preprocessor took 24.14 ms. Allocated memory is still 100.7 MB. Free memory was 73.8 MB in the beginning and 72.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:58:54,991 INFO L168 Benchmark]: RCFGBuilder took 675.46 ms. Allocated memory is still 100.7 MB. Free memory was 72.7 MB in the beginning and 52.5 MB in the end (delta: 20.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-13 07:58:54,991 INFO L168 Benchmark]: TraceAbstraction took 3674.85 ms. Allocated memory was 100.7 MB in the beginning and 136.3 MB in the end (delta: 35.7 MB). Free memory was 52.1 MB in the beginning and 87.6 MB in the end (delta: -35.5 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. [2021-10-13 07:58:54,992 INFO L168 Benchmark]: Witness Printer took 56.68 ms. Allocated memory is still 136.3 MB. Free memory was 87.6 MB in the beginning and 84.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:58:54,994 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 100.7 MB. Free memory is still 53.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 260.14 ms. Allocated memory is still 100.7 MB. Free memory was 67.1 MB in the beginning and 75.6 MB in the end (delta: -8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.26 ms. Allocated memory is still 100.7 MB. Free memory was 75.6 MB in the beginning and 73.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.14 ms. Allocated memory is still 100.7 MB. Free memory was 73.8 MB in the beginning and 72.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 675.46 ms. Allocated memory is still 100.7 MB. Free memory was 72.7 MB in the beginning and 52.5 MB in the end (delta: 20.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3674.85 ms. Allocated memory was 100.7 MB in the beginning and 136.3 MB in the end (delta: 35.7 MB). Free memory was 52.1 MB in the beginning and 87.6 MB in the end (delta: -35.5 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. * Witness Printer took 56.68 ms. Allocated memory is still 136.3 MB. Free memory was 87.6 MB in the beginning and 84.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 3582.1ms, OverallIterations: 2, TraceHistogramMax: 2, EmptinessCheckTime: 9.2ms, AutomataDifference: 2139.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 69.2ms, InitialAbstractionConstructionTime: 27.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 9 SDtfs, 9 SDslu, 20 SDs, 0 SdLazy, 21 SolverSat, 4 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2042.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=1, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 13.4ms AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 7 NumberOfFragments, 70 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 27.1ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 36.6ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 10.4ms SsaConstructionTime, 68.8ms SatisfiabilityAnalysisTime, 553.5ms InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 128 SizeOfPredicates, 10 NumberOfNonLiveVariables, 147 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 4/4 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: 40]: Loop Invariant Derived loop invariant: (((((((a == x && 1 <= cond) && 1 <= y % 4294967296) && a == v) && y % 4294967296 <= 1) && x % 4294967296 <= 1) && b == u) && 1 <= x % 4294967296) && b == y - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: ((((((a == x && 1 <= y % 4294967296) && a == v) && y % 4294967296 <= 1) && x % 4294967296 <= 1) && b == u) && 1 <= x % 4294967296) && b == y - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-13 07:58:55,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6c5b13-aa57-4b1c-a97d-c2ce0f8e7c2d/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...