./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive-simple/id_b3_o2-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b2fbad-1f2f-455c-b187-b4539a514068/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b2fbad-1f2f-455c-b187-b4539a514068/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b2fbad-1f2f-455c-b187-b4539a514068/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b2fbad-1f2f-455c-b187-b4539a514068/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_b3_o2-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b2fbad-1f2f-455c-b187-b4539a514068/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b2fbad-1f2f-455c-b187-b4539a514068/bin/uautomizer-Z5i5R5N3CC --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 484424e2603cb6f289397755afc3736c2105460d ................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 00:21:32,409 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:21:32,412 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:21:32,466 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:21:32,467 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:21:32,474 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:21:32,476 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:21:32,481 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:21:32,484 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:21:32,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:21:32,493 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:21:32,494 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:21:32,495 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:21:32,498 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:21:32,500 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:21:32,501 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:21:32,503 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:21:32,508 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:21:32,511 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:21:32,521 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:21:32,523 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:21:32,524 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:21:32,528 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:21:32,529 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:21:32,533 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:21:32,534 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:21:32,534 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:21:32,537 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:21:32,537 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:21:32,539 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:21:32,540 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:21:32,541 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:21:32,543 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:21:32,544 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:21:32,546 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:21:32,546 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:21:32,547 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:21:32,548 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:21:32,548 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:21:32,549 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:21:32,550 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:21:32,553 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b2fbad-1f2f-455c-b187-b4539a514068/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-10-11 00:21:32,600 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:21:32,601 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:21:32,603 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:21:32,603 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:21:32,603 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:21:32,604 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:21:32,604 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:21:32,604 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 00:21:32,604 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:21:32,604 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:21:32,606 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:21:32,606 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:21:32,606 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:21:32,606 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:21:32,607 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-11 00:21:32,607 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:21:32,607 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:21:32,607 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:21:32,608 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:21:32,608 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:21:32,608 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:21:32,608 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:21:32,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:21:32,609 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:21:32,609 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:21:32,609 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:21:32,610 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:21:32,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:21:32,610 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:21:32,610 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:21:32,611 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b2fbad-1f2f-455c-b187-b4539a514068/bin/uautomizer-Z5i5R5N3CC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b2fbad-1f2f-455c-b187-b4539a514068/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 484424e2603cb6f289397755afc3736c2105460d [2021-10-11 00:21:32,879 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:21:32,914 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:21:32,917 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:21:32,919 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:21:32,920 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:21:32,921 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b2fbad-1f2f-455c-b187-b4539a514068/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/recursive-simple/id_b3_o2-1.c [2021-10-11 00:21:33,014 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b2fbad-1f2f-455c-b187-b4539a514068/bin/uautomizer-Z5i5R5N3CC/data/c9fba81eb/016046e520114ff6bc7bcda0df1abd38/FLAG38ffb80ce [2021-10-11 00:21:33,596 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:21:33,597 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b2fbad-1f2f-455c-b187-b4539a514068/sv-benchmarks/c/recursive-simple/id_b3_o2-1.c [2021-10-11 00:21:33,603 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b2fbad-1f2f-455c-b187-b4539a514068/bin/uautomizer-Z5i5R5N3CC/data/c9fba81eb/016046e520114ff6bc7bcda0df1abd38/FLAG38ffb80ce [2021-10-11 00:21:34,020 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b2fbad-1f2f-455c-b187-b4539a514068/bin/uautomizer-Z5i5R5N3CC/data/c9fba81eb/016046e520114ff6bc7bcda0df1abd38 [2021-10-11 00:21:34,022 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:21:34,026 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:21:34,029 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:21:34,030 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:21:34,033 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:21:34,035 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:21:34" (1/1) ... [2021-10-11 00:21:34,037 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b5d5830 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:34, skipping insertion in model container [2021-10-11 00:21:34,037 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:21:34" (1/1) ... [2021-10-11 00:21:34,044 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:21:34,057 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:21:34,187 WARN L226 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_a5b2fbad-1f2f-455c-b187-b4539a514068/sv-benchmarks/c/recursive-simple/id_b3_o2-1.c[514,527] [2021-10-11 00:21:34,188 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:21:34,210 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:21:34,227 WARN L226 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_a5b2fbad-1f2f-455c-b187-b4539a514068/sv-benchmarks/c/recursive-simple/id_b3_o2-1.c[514,527] [2021-10-11 00:21:34,228 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:21:34,242 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:21:34,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:34 WrapperNode [2021-10-11 00:21:34,242 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:21:34,244 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:21:34,244 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:21:34,244 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:21:34,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:34" (1/1) ... [2021-10-11 00:21:34,261 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:34" (1/1) ... [2021-10-11 00:21:34,282 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:21:34,284 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:21:34,284 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:21:34,284 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:21:34,292 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:34" (1/1) ... [2021-10-11 00:21:34,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:34" (1/1) ... [2021-10-11 00:21:34,307 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:34" (1/1) ... [2021-10-11 00:21:34,307 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:34" (1/1) ... [2021-10-11 00:21:34,310 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:34" (1/1) ... [2021-10-11 00:21:34,312 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:34" (1/1) ... [2021-10-11 00:21:34,313 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:34" (1/1) ... [2021-10-11 00:21:34,314 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:21:34,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:21:34,315 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:21:34,315 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:21:34,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:34" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b2fbad-1f2f-455c-b187-b4539a514068/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:21:34,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:21:34,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:21:34,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 00:21:34,392 INFO L130 BoogieDeclarations]: Found specification of procedure id [2021-10-11 00:21:34,393 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2021-10-11 00:21:34,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:21:34,628 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:21:34,629 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-11 00:21:34,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:21:34 BoogieIcfgContainer [2021-10-11 00:21:34,630 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:21:34,652 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:21:34,652 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:21:34,656 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:21:34,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:21:34" (1/3) ... [2021-10-11 00:21:34,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4af08bbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:21:34, skipping insertion in model container [2021-10-11 00:21:34,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:34" (2/3) ... [2021-10-11 00:21:34,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4af08bbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:21:34, skipping insertion in model container [2021-10-11 00:21:34,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:21:34" (3/3) ... [2021-10-11 00:21:34,660 INFO L111 eAbstractionObserver]: Analyzing ICFG id_b3_o2-1.c [2021-10-11 00:21:34,675 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:21:34,678 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2021-10-11 00:21:34,690 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-11 00:21:34,714 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:21:34,714 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:21:34,715 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:21:34,715 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:21:34,715 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:21:34,715 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:21:34,715 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:21:34,716 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:21:34,731 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2021-10-11 00:21:34,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 00:21:34,742 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:21:34,743 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 00:21:34,759 INFO L429 AbstractCegarLoop]: === Iteration 1 === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:21:34,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:21:34,765 INFO L82 PathProgramCache]: Analyzing trace with hash 890408432, now seen corresponding path program 1 times [2021-10-11 00:21:34,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:21:34,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378489107] [2021-10-11 00:21:34,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:21:34,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:21:34,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:21:34,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378489107] [2021-10-11 00:21:34,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:21:34,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:21:34,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767845206] [2021-10-11 00:21:34,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:21:34,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:21:34,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:21:34,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:21:34,989 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2021-10-11 00:21:35,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:21:35,090 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2021-10-11 00:21:35,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 00:21:35,092 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2021-10-11 00:21:35,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:21:35,101 INFO L225 Difference]: With dead ends: 27 [2021-10-11 00:21:35,101 INFO L226 Difference]: Without dead ends: 17 [2021-10-11 00:21:35,104 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:21:35,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-11 00:21:35,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-10-11 00:21:35,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-11 00:21:35,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-10-11 00:21:35,144 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 6 [2021-10-11 00:21:35,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:21:35,144 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-10-11 00:21:35,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:21:35,144 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-10-11 00:21:35,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 00:21:35,145 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:21:35,145 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:21:35,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:21:35,146 INFO L429 AbstractCegarLoop]: === Iteration 2 === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:21:35,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:21:35,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1832857669, now seen corresponding path program 1 times [2021-10-11 00:21:35,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:21:35,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407484348] [2021-10-11 00:21:35,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:21:35,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:21:35,176 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:21:35,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:21:35,208 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:21:35,240 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:21:35,241 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 00:21:35,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 00:21:35,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:21:35 BoogieIcfgContainer [2021-10-11 00:21:35,280 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:21:35,281 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:21:35,281 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:21:35,281 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:21:35,282 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:21:34" (3/4) ... [2021-10-11 00:21:35,284 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 00:21:35,331 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b2fbad-1f2f-455c-b187-b4539a514068/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:21:35,331 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:21:35,336 INFO L168 Benchmark]: Toolchain (without parser) took 1306.00 ms. Allocated memory was 113.2 MB in the beginning and 161.5 MB in the end (delta: 48.2 MB). Free memory was 84.5 MB in the beginning and 92.6 MB in the end (delta: -8.1 MB). Peak memory consumption was 36.6 MB. Max. memory is 16.1 GB. [2021-10-11 00:21:35,337 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 113.2 MB. Free memory is still 69.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:21:35,344 INFO L168 Benchmark]: CACSL2BoogieTranslator took 213.56 ms. Allocated memory was 113.2 MB in the beginning and 161.5 MB in the end (delta: 48.2 MB). Free memory was 84.5 MB in the beginning and 137.2 MB in the end (delta: -52.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:21:35,345 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.52 ms. Allocated memory is still 161.5 MB. Free memory was 137.2 MB in the beginning and 135.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:21:35,346 INFO L168 Benchmark]: Boogie Preprocessor took 30.70 ms. Allocated memory is still 161.5 MB. Free memory was 135.8 MB in the beginning and 135.1 MB in the end (delta: 670.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:21:35,347 INFO L168 Benchmark]: RCFGBuilder took 315.50 ms. Allocated memory is still 161.5 MB. Free memory was 135.1 MB in the beginning and 122.5 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 00:21:35,348 INFO L168 Benchmark]: TraceAbstraction took 628.28 ms. Allocated memory is still 161.5 MB. Free memory was 121.9 MB in the beginning and 94.5 MB in the end (delta: 27.4 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2021-10-11 00:21:35,352 INFO L168 Benchmark]: Witness Printer took 50.35 ms. Allocated memory is still 161.5 MB. Free memory was 94.5 MB in the beginning and 92.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:21:35,357 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 113.2 MB. Free memory is still 69.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 213.56 ms. Allocated memory was 113.2 MB in the beginning and 161.5 MB in the end (delta: 48.2 MB). Free memory was 84.5 MB in the beginning and 137.2 MB in the end (delta: -52.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.52 ms. Allocated memory is still 161.5 MB. Free memory was 137.2 MB in the beginning and 135.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.70 ms. Allocated memory is still 161.5 MB. Free memory was 135.8 MB in the beginning and 135.1 MB in the end (delta: 670.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 315.50 ms. Allocated memory is still 161.5 MB. Free memory was 135.1 MB in the beginning and 122.5 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 628.28 ms. Allocated memory is still 161.5 MB. Free memory was 121.9 MB in the beginning and 94.5 MB in the end (delta: 27.4 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * Witness Printer took 50.35 ms. Allocated memory is still 161.5 MB. Free memory was 94.5 MB in the beginning and 92.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 8]: integer overflow possible integer overflow possible We found a FailurePath: [L14] int input = __VERIFIER_nondet_int(); [L15] CALL id(input) VAL [\old(x)=-2147483648] [L7] COND FALSE !(x==0) VAL [\old(x)=-2147483648, x=-2147483648] [L8] x-1 VAL [\old(x)=-2147483648, x=-2147483648] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 24 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 17 SDtfs, 31 SDslu, 25 SDs, 0 SdLazy, 19 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 65 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...