./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-ndecr.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_d65088f6-7d93-4740-82ee-b2ac2f85e443/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d65088f6-7d93-4740-82ee-b2ac2f85e443/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d65088f6-7d93-4740-82ee-b2ac2f85e443/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d65088f6-7d93-4740-82ee-b2ac2f85e443/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-ndecr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d65088f6-7d93-4740-82ee-b2ac2f85e443/bin/utaipan-WLngWcDbfI/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d65088f6-7d93-4740-82ee-b2ac2f85e443/bin/utaipan-WLngWcDbfI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 30650645c50d34fcfc42e8853470c3e29a63ab6d ............................................................................................................................................................................................................................................................................. 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 02:32:48,209 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:32:48,212 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:32:48,257 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:32:48,258 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:32:48,263 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:32:48,266 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:32:48,270 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:32:48,273 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:32:48,279 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:32:48,281 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:32:48,282 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:32:48,283 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:32:48,286 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:32:48,288 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:32:48,290 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:32:48,292 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:32:48,297 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:32:48,300 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:32:48,310 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:32:48,312 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:32:48,313 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:32:48,317 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:32:48,318 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:32:48,321 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:32:48,322 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:32:48,322 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:32:48,325 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:32:48,325 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:32:48,327 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:32:48,327 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:32:48,328 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:32:48,331 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:32:48,332 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:32:48,334 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:32:48,334 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:32:48,335 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:32:48,335 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:32:48,335 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:32:48,336 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:32:48,337 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:32:48,340 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d65088f6-7d93-4740-82ee-b2ac2f85e443/bin/utaipan-WLngWcDbfI/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-10-11 02:32:48,379 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:32:48,382 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:32:48,384 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:32:48,384 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:32:48,384 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:32:48,385 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:32:48,385 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:32:48,385 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:32:48,391 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:32:48,391 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:32:48,392 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:32:48,392 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:32:48,392 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:32:48,393 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:32:48,393 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:32:48,394 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:32:48,394 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:32:48,394 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:32:48,394 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:32:48,396 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:32:48,396 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:32:48,401 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:32:48,401 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-11 02:32:48,402 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:32:48,402 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:32:48,402 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:32:48,402 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:32:48,403 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:32:48,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:32:48,403 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:32:48,403 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:32:48,403 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:32:48,403 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:32:48,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:32:48,404 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:32:48,404 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:32:48,404 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:32:48,404 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_d65088f6-7d93-4740-82ee-b2ac2f85e443/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d65088f6-7d93-4740-82ee-b2ac2f85e443/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30650645c50d34fcfc42e8853470c3e29a63ab6d [2021-10-11 02:32:48,660 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:32:48,689 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:32:48,693 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:32:48,694 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:32:48,695 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:32:48,696 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d65088f6-7d93-4740-82ee-b2ac2f85e443/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-ndecr.c [2021-10-11 02:32:48,788 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d65088f6-7d93-4740-82ee-b2ac2f85e443/bin/utaipan-WLngWcDbfI/data/281e2f6dc/1ef516526e464e17a33d9c77a4ccf4fa/FLAGbca4a23b4 [2021-10-11 02:32:49,195 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:32:49,196 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d65088f6-7d93-4740-82ee-b2ac2f85e443/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-ndecr.c [2021-10-11 02:32:49,202 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d65088f6-7d93-4740-82ee-b2ac2f85e443/bin/utaipan-WLngWcDbfI/data/281e2f6dc/1ef516526e464e17a33d9c77a4ccf4fa/FLAGbca4a23b4 [2021-10-11 02:32:49,597 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d65088f6-7d93-4740-82ee-b2ac2f85e443/bin/utaipan-WLngWcDbfI/data/281e2f6dc/1ef516526e464e17a33d9c77a4ccf4fa [2021-10-11 02:32:49,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:32:49,604 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:32:49,609 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:32:49,609 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:32:49,612 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:32:49,612 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:32:49" (1/1) ... [2021-10-11 02:32:49,615 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d5cf45b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:49, skipping insertion in model container [2021-10-11 02:32:49,615 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:32:49" (1/1) ... [2021-10-11 02:32:49,623 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:32:49,634 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:32:49,776 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:32:49,779 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:32:49,811 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:32:49,823 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:32:49,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:49 WrapperNode [2021-10-11 02:32:49,823 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:32:49,825 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:32:49,825 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:32:49,825 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:32:49,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:49" (1/1) ... [2021-10-11 02:32:49,840 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:49" (1/1) ... [2021-10-11 02:32:49,866 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:32:49,867 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:32:49,867 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:32:49,868 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:32:49,877 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:49" (1/1) ... [2021-10-11 02:32:49,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:49" (1/1) ... [2021-10-11 02:32:49,881 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:49" (1/1) ... [2021-10-11 02:32:49,882 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:49" (1/1) ... [2021-10-11 02:32:49,885 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:49" (1/1) ... [2021-10-11 02:32:49,894 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:49" (1/1) ... [2021-10-11 02:32:49,895 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:49" (1/1) ... [2021-10-11 02:32:49,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:32:49,898 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:32:49,899 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:32:49,899 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:32:49,901 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:49" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d65088f6-7d93-4740-82ee-b2ac2f85e443/bin/utaipan-WLngWcDbfI/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 02:32:50,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:32:50,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:32:50,284 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:32:50,284 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-11 02:32:50,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:32:50 BoogieIcfgContainer [2021-10-11 02:32:50,287 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:32:50,289 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:32:50,290 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:32:50,295 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:32:50,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:32:49" (1/3) ... [2021-10-11 02:32:50,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fbcecfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:32:50, skipping insertion in model container [2021-10-11 02:32:50,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:49" (2/3) ... [2021-10-11 02:32:50,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fbcecfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:32:50, skipping insertion in model container [2021-10-11 02:32:50,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:32:50" (3/3) ... [2021-10-11 02:32:50,298 INFO L111 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-ndecr.c [2021-10-11 02:32:50,313 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:32:50,316 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2021-10-11 02:32:50,326 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-11 02:32:50,347 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:32:50,347 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:32:50,347 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:32:50,347 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:32:50,347 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:32:50,348 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:32:50,348 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:32:50,348 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:32:50,361 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2021-10-11 02:32:50,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-11 02:32:50,365 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:50,365 INFO L422 BasicCegarLoop]: trace histogram [1, 1] [2021-10-11 02:32:50,366 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:32:50,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:50,371 INFO L82 PathProgramCache]: Analyzing trace with hash 994, now seen corresponding path program 1 times [2021-10-11 02:32:50,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:50,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964101711] [2021-10-11 02:32:50,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:50,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:50,512 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 02:32:50,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964101711] [2021-10-11 02:32:50,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:50,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:32:50,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960318816] [2021-10-11 02:32:50,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:32:50,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:50,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:32:50,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:32:50,535 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2021-10-11 02:32:50,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:50,557 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2021-10-11 02:32:50,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:32:50,559 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2021-10-11 02:32:50,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:50,566 INFO L225 Difference]: With dead ends: 11 [2021-10-11 02:32:50,567 INFO L226 Difference]: Without dead ends: 9 [2021-10-11 02:32:50,569 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:32:50,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-11 02:32:50,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-11 02:32:50,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-11 02:32:50,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-10-11 02:32:50,600 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 2 [2021-10-11 02:32:50,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:50,600 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-10-11 02:32:50,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:32:50,600 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-10-11 02:32:50,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-11 02:32:50,601 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:50,601 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-11 02:32:50,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:32:50,602 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:32:50,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:50,603 INFO L82 PathProgramCache]: Analyzing trace with hash 30849, now seen corresponding path program 1 times [2021-10-11 02:32:50,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:50,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174308349] [2021-10-11 02:32:50,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:50,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:32:50,612 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:32:50,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:32:50,617 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:32:50,648 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:32:50,648 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:32:50,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:32:50,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:32:50 BoogieIcfgContainer [2021-10-11 02:32:50,683 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:32:50,684 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:32:50,684 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:32:50,684 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:32:50,685 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:32:50" (3/4) ... [2021-10-11 02:32:50,687 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:32:50,718 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d65088f6-7d93-4740-82ee-b2ac2f85e443/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:32:50,718 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:32:50,721 INFO L168 Benchmark]: Toolchain (without parser) took 1114.91 ms. Allocated memory is still 117.4 MB. Free memory was 86.5 MB in the beginning and 63.5 MB in the end (delta: 23.1 MB). Peak memory consumption was 20.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:50,722 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 79.7 MB. Free memory was 37.0 MB in the beginning and 37.0 MB in the end (delta: 36.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:32:50,723 INFO L168 Benchmark]: CACSL2BoogieTranslator took 215.34 ms. Allocated memory is still 117.4 MB. Free memory was 86.3 MB in the beginning and 96.8 MB in the end (delta: -10.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:50,723 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.16 ms. Allocated memory is still 117.4 MB. Free memory was 96.5 MB in the beginning and 95.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:32:50,724 INFO L168 Benchmark]: Boogie Preprocessor took 29.77 ms. Allocated memory is still 117.4 MB. Free memory was 95.3 MB in the beginning and 94.5 MB in the end (delta: 843.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:32:50,725 INFO L168 Benchmark]: RCFGBuilder took 389.37 ms. Allocated memory is still 117.4 MB. Free memory was 94.5 MB in the beginning and 84.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:50,726 INFO L168 Benchmark]: TraceAbstraction took 394.57 ms. Allocated memory is still 117.4 MB. Free memory was 84.0 MB in the beginning and 65.2 MB in the end (delta: 18.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:50,727 INFO L168 Benchmark]: Witness Printer took 34.38 ms. Allocated memory is still 117.4 MB. Free memory was 65.2 MB in the beginning and 63.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:50,734 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 79.7 MB. Free memory was 37.0 MB in the beginning and 37.0 MB in the end (delta: 36.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 215.34 ms. Allocated memory is still 117.4 MB. Free memory was 86.3 MB in the beginning and 96.8 MB in the end (delta: -10.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.16 ms. Allocated memory is still 117.4 MB. Free memory was 96.5 MB in the beginning and 95.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.77 ms. Allocated memory is still 117.4 MB. Free memory was 95.3 MB in the beginning and 94.5 MB in the end (delta: 843.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 389.37 ms. Allocated memory is still 117.4 MB. Free memory was 94.5 MB in the beginning and 84.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 394.57 ms. Allocated memory is still 117.4 MB. Free memory was 84.0 MB in the beginning and 65.2 MB in the end (delta: 18.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * Witness Printer took 34.38 ms. Allocated memory is still 117.4 MB. Free memory was 65.2 MB in the beginning and 63.5 MB in the end (delta: 1.7 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: 16]: integer overflow possible integer overflow possible We found a FailurePath: [L14] int i, n; [L15] n = __VERIFIER_nondet_int() [L16] n - 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7 SDtfs, 9 SDslu, 0 SDs, 0 SdLazy, 3 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred 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, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 1 ConstructedInterpolants, 0 QuantifiedInterpolants, 3 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...