./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound5.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_85b2c6e1-9bc3-47c7-b2fc-ea81add0660d/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b2c6e1-9bc3-47c7-b2fc-ea81add0660d/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_85b2c6e1-9bc3-47c7-b2fc-ea81add0660d/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b2c6e1-9bc3-47c7-b2fc-ea81add0660d/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b2c6e1-9bc3-47c7-b2fc-ea81add0660d/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_85b2c6e1-9bc3-47c7-b2fc-ea81add0660d/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 73916c7f3287d52e9f1b60672ac0b7eb47f7096b ...................................................................................................................................................................................................................................................................................................................................................................... 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 08:12:20,304 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 08:12:20,308 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 08:12:20,381 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 08:12:20,382 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 08:12:20,387 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 08:12:20,390 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 08:12:20,395 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 08:12:20,398 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 08:12:20,404 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 08:12:20,406 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 08:12:20,408 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 08:12:20,409 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 08:12:20,412 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 08:12:20,414 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 08:12:20,419 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 08:12:20,422 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 08:12:20,423 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 08:12:20,426 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 08:12:20,435 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 08:12:20,437 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 08:12:20,439 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 08:12:20,443 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 08:12:20,444 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 08:12:20,452 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 08:12:20,453 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 08:12:20,453 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 08:12:20,456 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 08:12:20,457 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 08:12:20,458 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 08:12:20,459 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 08:12:20,460 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 08:12:20,463 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 08:12:20,464 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 08:12:20,466 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 08:12:20,467 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 08:12:20,468 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 08:12:20,468 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 08:12:20,468 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 08:12:20,469 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 08:12:20,470 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 08:12:20,472 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b2c6e1-9bc3-47c7-b2fc-ea81add0660d/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 08:12:20,522 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 08:12:20,523 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 08:12:20,524 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 08:12:20,525 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 08:12:20,525 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 08:12:20,525 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 08:12:20,525 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 08:12:20,526 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 08:12:20,533 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 08:12:20,534 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 08:12:20,535 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 08:12:20,535 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 08:12:20,536 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 08:12:20,536 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 08:12:20,536 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 08:12:20,537 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 08:12:20,538 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 08:12:20,538 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 08:12:20,538 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 08:12:20,538 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 08:12:20,539 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 08:12:20,539 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 08:12:20,539 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 08:12:20,539 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 08:12:20,540 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 08:12:20,540 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 08:12:20,540 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 08:12:20,541 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 08:12:20,541 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 08:12:20,543 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 08:12:20,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:12:20,544 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 08:12:20,544 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 08:12:20,544 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 08:12:20,545 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 08:12:20,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 08:12:20,545 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 08:12:20,545 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 08:12:20,546 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 08:12:20,546 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_85b2c6e1-9bc3-47c7-b2fc-ea81add0660d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b2c6e1-9bc3-47c7-b2fc-ea81add0660d/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73916c7f3287d52e9f1b60672ac0b7eb47f7096b [2021-10-13 08:12:20,895 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 08:12:20,934 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 08:12:20,938 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 08:12:20,939 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 08:12:20,940 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 08:12:20,941 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b2c6e1-9bc3-47c7-b2fc-ea81add0660d/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound5.c [2021-10-13 08:12:21,050 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b2c6e1-9bc3-47c7-b2fc-ea81add0660d/bin/utaipan-q2qaUkNPG8/data/bb80148ce/389d404481ec4c76aa50bdf8ad3e841b/FLAG2ebdd4ddf [2021-10-13 08:12:21,618 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 08:12:21,619 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b2c6e1-9bc3-47c7-b2fc-ea81add0660d/sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound5.c [2021-10-13 08:12:21,626 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b2c6e1-9bc3-47c7-b2fc-ea81add0660d/bin/utaipan-q2qaUkNPG8/data/bb80148ce/389d404481ec4c76aa50bdf8ad3e841b/FLAG2ebdd4ddf [2021-10-13 08:12:21,960 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b2c6e1-9bc3-47c7-b2fc-ea81add0660d/bin/utaipan-q2qaUkNPG8/data/bb80148ce/389d404481ec4c76aa50bdf8ad3e841b [2021-10-13 08:12:21,964 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 08:12:21,966 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 08:12:21,977 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 08:12:21,977 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 08:12:21,981 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 08:12:21,982 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:12:21" (1/1) ... [2021-10-13 08:12:21,983 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17602c9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:21, skipping insertion in model container [2021-10-13 08:12:21,983 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:12:21" (1/1) ... [2021-10-13 08:12:21,992 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 08:12:22,010 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 08:12:22,210 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_85b2c6e1-9bc3-47c7-b2fc-ea81add0660d/sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound5.c[524,537] [2021-10-13 08:12:22,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:12:22,246 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 08:12:22,266 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_85b2c6e1-9bc3-47c7-b2fc-ea81add0660d/sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound5.c[524,537] [2021-10-13 08:12:22,285 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:12:22,304 INFO L208 MainTranslator]: Completed translation [2021-10-13 08:12:22,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:22 WrapperNode [2021-10-13 08:12:22,305 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 08:12:22,308 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 08:12:22,309 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 08:12:22,309 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 08:12:22,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:22" (1/1) ... [2021-10-13 08:12:22,330 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:22" (1/1) ... [2021-10-13 08:12:22,367 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 08:12:22,368 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 08:12:22,369 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 08:12:22,370 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 08:12:22,379 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:22" (1/1) ... [2021-10-13 08:12:22,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:22" (1/1) ... [2021-10-13 08:12:22,392 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:22" (1/1) ... [2021-10-13 08:12:22,394 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:22" (1/1) ... [2021-10-13 08:12:22,399 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:22" (1/1) ... [2021-10-13 08:12:22,407 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:22" (1/1) ... [2021-10-13 08:12:22,413 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:22" (1/1) ... [2021-10-13 08:12:22,421 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 08:12:22,423 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 08:12:22,424 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 08:12:22,425 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 08:12:22,426 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:22" (1/1) ... [2021-10-13 08:12:22,434 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:12:22,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b2c6e1-9bc3-47c7-b2fc-ea81add0660d/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:12:22,466 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b2c6e1-9bc3-47c7-b2fc-ea81add0660d/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 08:12:22,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b2c6e1-9bc3-47c7-b2fc-ea81add0660d/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 08:12:22,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 08:12:22,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 08:12:22,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 08:12:22,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 08:12:23,006 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 08:12:23,006 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-10-13 08:12:23,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:12:23 BoogieIcfgContainer [2021-10-13 08:12:23,009 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 08:12:23,011 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 08:12:23,011 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 08:12:23,015 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 08:12:23,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:12:21" (1/3) ... [2021-10-13 08:12:23,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@553e39b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:12:23, skipping insertion in model container [2021-10-13 08:12:23,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:22" (2/3) ... [2021-10-13 08:12:23,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@553e39b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:12:23, skipping insertion in model container [2021-10-13 08:12:23,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:12:23" (3/3) ... [2021-10-13 08:12:23,018 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat2-ll_valuebound5.c [2021-10-13 08:12:23,030 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 08:12:23,031 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-13 08:12:23,110 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 08:12:23,118 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 08:12:23,118 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-13 08:12:23,135 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 08:12:23,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 08:12:23,142 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:12:23,143 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 08:12:23,144 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:12:23,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:12:23,151 INFO L82 PathProgramCache]: Analyzing trace with hash 3762700, now seen corresponding path program 1 times [2021-10-13 08:12:23,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:12:23,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034639576] [2021-10-13 08:12:23,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:12:23,164 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:12:23,238 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 08:12:23,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [322677610] [2021-10-13 08:12:23,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:12:23,273 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:12:23,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b2c6e1-9bc3-47c7-b2fc-ea81add0660d/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:12:23,284 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b2c6e1-9bc3-47c7-b2fc-ea81add0660d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:12:23,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b2c6e1-9bc3-47c7-b2fc-ea81add0660d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 08:12:23,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:12:23,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 08:12:23,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:12:24,026 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 08:12:24,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:12:24,156 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 08:12:24,156 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:12:24,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034639576] [2021-10-13 08:12:24,157 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 08:12:24,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322677610] [2021-10-13 08:12:24,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322677610] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:12:24,158 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:12:24,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 08:12:24,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659859115] [2021-10-13 08:12:24,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 08:12:24,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:12:24,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 08:12:24,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:12:24,192 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 08:12:24,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:12:24,652 INFO L93 Difference]: Finished difference Result 30 states and 39 transitions. [2021-10-13 08:12:24,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 08:12:24,654 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 08:12:24,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:12:24,663 INFO L225 Difference]: With dead ends: 30 [2021-10-13 08:12:24,664 INFO L226 Difference]: Without dead ends: 15 [2021-10-13 08:12:24,667 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 153.1ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-13 08:12:24,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-13 08:12:24,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 8. [2021-10-13 08:12:24,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:12:24,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-10-13 08:12:24,704 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2021-10-13 08:12:24,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:12:24,704 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-10-13 08:12:24,705 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 08:12:24,705 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-10-13 08:12:24,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 08:12:24,706 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:12:24,706 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:12:24,746 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b2c6e1-9bc3-47c7-b2fc-ea81add0660d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-13 08:12:24,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b2c6e1-9bc3-47c7-b2fc-ea81add0660d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-13 08:12:24,921 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:12:24,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:12:24,921 INFO L82 PathProgramCache]: Analyzing trace with hash 430365587, now seen corresponding path program 1 times [2021-10-13 08:12:24,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:12:24,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966026378] [2021-10-13 08:12:24,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:12:24,922 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:12:24,931 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 08:12:24,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [801386935] [2021-10-13 08:12:24,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:12:24,932 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:12:24,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b2c6e1-9bc3-47c7-b2fc-ea81add0660d/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:12:24,933 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b2c6e1-9bc3-47c7-b2fc-ea81add0660d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:12:24,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b2c6e1-9bc3-47c7-b2fc-ea81add0660d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 08:12:24,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:12:24,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 08:12:25,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:12:25,156 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 08:12:25,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:12:25,293 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 08:12:25,294 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:12:25,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966026378] [2021-10-13 08:12:25,294 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 08:12:25,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801386935] [2021-10-13 08:12:25,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801386935] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:12:25,295 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:12:25,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2021-10-13 08:12:25,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543549326] [2021-10-13 08:12:25,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 08:12:25,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:12:25,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 08:12:25,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-13 08:12:25,300 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 8 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 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 08:12:25,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:12:25,526 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2021-10-13 08:12:25,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 08:12:25,527 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 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 08:12:25,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:12:25,527 INFO L225 Difference]: With dead ends: 9 [2021-10-13 08:12:25,528 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 08:12:25,529 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 157.4ms TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-10-13 08:12:25,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 08:12:25,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 08:12:25,530 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 08:12:25,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 08:12:25,530 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2021-10-13 08:12:25,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:12:25,531 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 08:12:25,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 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 08:12:25,531 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 08:12:25,532 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 08:12:25,535 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:12:25,535 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:12:25,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b2c6e1-9bc3-47c7-b2fc-ea81add0660d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 08:12:25,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b2c6e1-9bc3-47c7-b2fc-ea81add0660d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:12:25,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 08:12:25,755 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:12:25,765 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:12:25,782 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:12:25,950 INFO L857 garLoopResultBuilder]: For program point L35-2(lines 35 46) no Hoare annotation was computed. [2021-10-13 08:12:25,951 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-13 08:12:25,951 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 08:12:25,951 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-13 08:12:25,951 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2021-10-13 08:12:25,952 INFO L853 garLoopResultBuilder]: At program point L12-2(line 37) the Hoare annotation is: (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* 2 ULTIMATE.start_main_~u~0) (* 4 ULTIMATE.start_main_~A~0) (* ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~v~0) (* 4 ULTIMATE.start_main_~r~0)) (+ (* ULTIMATE.start_main_~u~0 ULTIMATE.start_main_~u~0) (* 2 ULTIMATE.start_main_~v~0)))) [2021-10-13 08:12:25,952 INFO L857 garLoopResultBuilder]: For program point L12-3(lines 12 15) no Hoare annotation was computed. [2021-10-13 08:12:25,952 INFO L853 garLoopResultBuilder]: At program point L12-5(lines 11 17) the Hoare annotation is: (= (+ (* 2 ULTIMATE.start_main_~u~0) (* 4 ULTIMATE.start_main_~A~0) (* ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~v~0) (* 4 ULTIMATE.start_main_~r~0)) (+ (* ULTIMATE.start_main_~u~0 ULTIMATE.start_main_~u~0) (* 2 ULTIMATE.start_main_~v~0))) [2021-10-13 08:12:25,952 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 08:12:25,952 INFO L857 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-10-13 08:12:25,953 INFO L857 garLoopResultBuilder]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2021-10-13 08:12:25,953 INFO L853 garLoopResultBuilder]: At program point L39-2(lines 35 46) the Hoare annotation is: (or (let ((.cse0 (div (+ (* ULTIMATE.start_main_~u~0 (- 1)) 1) (- 2)))) (let ((.cse1 (* .cse0 .cse0))) (and (<= 0 .cse0) (<= ULTIMATE.start_main_~A~0 5) (= (+ ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0) .cse1) (= (mod (+ ULTIMATE.start_main_~u~0 1) (- 2)) 0) (= ULTIMATE.start_main_~v~0 1) (< (+ 1 .cse1) (+ ULTIMATE.start_main_~A~0 (* 2 .cse0)))))) (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* 2 ULTIMATE.start_main_~u~0) (* 4 ULTIMATE.start_main_~A~0) (* ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~v~0) (* 4 ULTIMATE.start_main_~r~0)) (+ (* ULTIMATE.start_main_~u~0 ULTIMATE.start_main_~u~0) (* 2 ULTIMATE.start_main_~v~0))))) [2021-10-13 08:12:25,957 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 08:12:25,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 08:12:25 BoogieIcfgContainer [2021-10-13 08:12:25,986 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 08:12:25,987 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 08:12:25,987 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 08:12:25,988 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 08:12:25,988 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:12:23" (3/4) ... [2021-10-13 08:12:25,991 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 08:12:26,014 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-10-13 08:12:26,014 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-13 08:12:26,015 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-13 08:12:26,015 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 08:12:26,071 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b2c6e1-9bc3-47c7-b2fc-ea81add0660d/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 08:12:26,072 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 08:12:26,074 INFO L168 Benchmark]: Toolchain (without parser) took 4106.70 ms. Allocated memory was 109.1 MB in the beginning and 134.2 MB in the end (delta: 25.2 MB). Free memory was 76.1 MB in the beginning and 79.9 MB in the end (delta: -3.8 MB). Peak memory consumption was 21.2 MB. Max. memory is 16.1 GB. [2021-10-13 08:12:26,075 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 109.1 MB. Free memory was 62.0 MB in the beginning and 62.0 MB in the end (delta: 54.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:12:26,075 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.38 ms. Allocated memory is still 109.1 MB. Free memory was 76.1 MB in the beginning and 82.7 MB in the end (delta: -6.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 08:12:26,076 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.62 ms. Allocated memory is still 109.1 MB. Free memory was 82.7 MB in the beginning and 81.2 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:12:26,077 INFO L168 Benchmark]: Boogie Preprocessor took 54.74 ms. Allocated memory is still 109.1 MB. Free memory was 81.2 MB in the beginning and 80.3 MB in the end (delta: 904.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:12:26,077 INFO L168 Benchmark]: RCFGBuilder took 585.79 ms. Allocated memory is still 109.1 MB. Free memory was 80.3 MB in the beginning and 63.1 MB in the end (delta: 17.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-13 08:12:26,078 INFO L168 Benchmark]: TraceAbstraction took 2975.65 ms. Allocated memory was 109.1 MB in the beginning and 134.2 MB in the end (delta: 25.2 MB). Free memory was 62.8 MB in the beginning and 83.1 MB in the end (delta: -20.3 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. [2021-10-13 08:12:26,079 INFO L168 Benchmark]: Witness Printer took 84.73 ms. Allocated memory is still 134.2 MB. Free memory was 83.1 MB in the beginning and 79.9 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:12:26,083 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 109.1 MB. Free memory was 62.0 MB in the beginning and 62.0 MB in the end (delta: 54.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 328.38 ms. Allocated memory is still 109.1 MB. Free memory was 76.1 MB in the beginning and 82.7 MB in the end (delta: -6.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 58.62 ms. Allocated memory is still 109.1 MB. Free memory was 82.7 MB in the beginning and 81.2 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 54.74 ms. Allocated memory is still 109.1 MB. Free memory was 81.2 MB in the beginning and 80.3 MB in the end (delta: 904.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 585.79 ms. Allocated memory is still 109.1 MB. Free memory was 80.3 MB in the beginning and 63.1 MB in the end (delta: 17.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2975.65 ms. Allocated memory was 109.1 MB in the beginning and 134.2 MB in the end (delta: 25.2 MB). Free memory was 62.8 MB in the beginning and 83.1 MB in the end (delta: -20.3 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. * Witness Printer took 84.73 ms. Allocated memory is still 134.2 MB. Free memory was 83.1 MB in the beginning and 79.9 MB in the end (delta: 3.2 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: 2853.1ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 11.8ms, AutomataDifference: 727.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 200.2ms, InitialAbstractionConstructionTime: 12.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 6 SDtfs, 23 SDslu, 8 SDs, 0 SdLazy, 26 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 505.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 310.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 20.5ms AutomataMinimizationTime, 2 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 8 NumberOfFragments, 143 HoareAnnotationTreeSize, 3 FomulaSimplifications, 220 FormulaSimplificationTreeSizeReduction, 35.0ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 97 FormulaSimplificationTreeSizeReductionInter, 158.3ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 13.7ms SsaConstructionTime, 65.2ms SatisfiabilityAnalysisTime, 1047.2ms InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 268 SizeOfPredicates, 17 NumberOfNonLiveVariables, 119 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: 1 == cond && 2 * u + 4 * A + v * v + 4 * r == u * u + 2 * v - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (((((0 <= (u * -1 + 1) / -2 && A <= 5) && A + r == (u * -1 + 1) / -2 * ((u * -1 + 1) / -2)) && (u + 1) % -2 == 0) && v == 1) && 1 + (u * -1 + 1) / -2 * ((u * -1 + 1) / -2) < A + 2 * ((u * -1 + 1) / -2)) || (1 <= cond && 2 * u + 4 * A + v * v + 4 * r == u * u + 2 * v) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 2 * u + 4 * A + v * v + 4 * r == u * u + 2 * v RESULT: Ultimate proved your program to be correct! [2021-10-13 08:12:26,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b2c6e1-9bc3-47c7-b2fc-ea81add0660d/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...