./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex1.02.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_543a4fd7-97a2-4c23-8191-7dc730e52ed9/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_543a4fd7-97a2-4c23-8191-7dc730e52ed9/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_543a4fd7-97a2-4c23-8191-7dc730e52ed9/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_543a4fd7-97a2-4c23-8191-7dc730e52ed9/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex1.02.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_543a4fd7-97a2-4c23-8191-7dc730e52ed9/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_543a4fd7-97a2-4c23-8191-7dc730e52ed9/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 64bit --witnessprinter.graph.data.programhash f7a9b9f6f441a79f9d4bea5933ea301694cdf5e5 ............................................................................................................................................................................................................................... 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 00:22:09,442 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:22:09,445 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:22:09,492 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:22:09,493 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:22:09,499 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:22:09,502 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:22:09,507 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:22:09,510 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:22:09,519 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:22:09,520 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:22:09,522 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:22:09,522 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:22:09,526 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:22:09,527 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:22:09,530 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:22:09,532 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:22:09,538 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:22:09,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:22:09,551 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:22:09,553 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:22:09,555 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:22:09,558 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:22:09,560 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:22:09,564 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:22:09,565 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:22:09,565 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:22:09,567 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:22:09,568 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:22:09,570 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:22:09,571 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:22:09,572 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:22:09,574 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:22:09,575 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:22:09,577 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:22:09,578 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:22:09,579 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:22:09,580 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:22:09,580 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:22:09,581 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:22:09,583 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:22:09,585 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_543a4fd7-97a2-4c23-8191-7dc730e52ed9/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-10-11 00:22:09,643 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:22:09,643 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:22:09,646 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:22:09,646 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:22:09,646 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:22:09,647 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:22:09,647 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 00:22:09,647 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:22:09,654 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:22:09,654 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:22:09,656 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:22:09,656 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:22:09,656 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-11 00:22:09,657 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:22:09,657 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:22:09,657 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:22:09,658 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:22:09,658 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:22:09,658 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:22:09,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:22:09,659 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:22:09,659 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:22:09,659 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:22:09,660 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:22:09,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:22:09,660 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:22:09,660 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:22:09,661 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_543a4fd7-97a2-4c23-8191-7dc730e52ed9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_543a4fd7-97a2-4c23-8191-7dc730e52ed9/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f7a9b9f6f441a79f9d4bea5933ea301694cdf5e5 [2021-10-11 00:22:09,915 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:22:09,958 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:22:09,960 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:22:09,961 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:22:09,962 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:22:09,964 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_543a4fd7-97a2-4c23-8191-7dc730e52ed9/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex1.02.c [2021-10-11 00:22:10,024 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_543a4fd7-97a2-4c23-8191-7dc730e52ed9/bin/uautomizer-Z5i5R5N3CC/data/8454b78e9/62835fe3ea7d45a2b083108f37dbed44/FLAGb0c4b5271 [2021-10-11 00:22:10,511 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:22:10,512 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_543a4fd7-97a2-4c23-8191-7dc730e52ed9/sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex1.02.c [2021-10-11 00:22:10,517 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_543a4fd7-97a2-4c23-8191-7dc730e52ed9/bin/uautomizer-Z5i5R5N3CC/data/8454b78e9/62835fe3ea7d45a2b083108f37dbed44/FLAGb0c4b5271 [2021-10-11 00:22:10,880 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_543a4fd7-97a2-4c23-8191-7dc730e52ed9/bin/uautomizer-Z5i5R5N3CC/data/8454b78e9/62835fe3ea7d45a2b083108f37dbed44 [2021-10-11 00:22:10,882 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:22:10,883 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:22:10,885 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:22:10,885 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:22:10,894 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:22:10,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:22:10" (1/1) ... [2021-10-11 00:22:10,899 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f493bf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:10, skipping insertion in model container [2021-10-11 00:22:10,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:22:10" (1/1) ... [2021-10-11 00:22:10,913 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:22:10,930 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:22:11,094 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:22:11,113 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:22:11,131 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:22:11,143 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:22:11,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:11 WrapperNode [2021-10-11 00:22:11,143 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:22:11,144 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:22:11,145 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:22:11,145 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:22:11,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:11" (1/1) ... [2021-10-11 00:22:11,159 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:11" (1/1) ... [2021-10-11 00:22:11,182 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:22:11,183 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:22:11,185 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:22:11,186 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:22:11,194 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:11" (1/1) ... [2021-10-11 00:22:11,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:11" (1/1) ... [2021-10-11 00:22:11,195 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:11" (1/1) ... [2021-10-11 00:22:11,195 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:11" (1/1) ... [2021-10-11 00:22:11,197 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:11" (1/1) ... [2021-10-11 00:22:11,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:11" (1/1) ... [2021-10-11 00:22:11,201 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:11" (1/1) ... [2021-10-11 00:22:11,203 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:22:11,203 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:22:11,204 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:22:11,204 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:22:11,205 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:11" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_543a4fd7-97a2-4c23-8191-7dc730e52ed9/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 00:22:11,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:22:11,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:22:11,530 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:22:11,530 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-11 00:22:11,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:22:11 BoogieIcfgContainer [2021-10-11 00:22:11,532 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:22:11,534 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:22:11,534 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:22:11,542 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:22:11,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:22:10" (1/3) ... [2021-10-11 00:22:11,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aefa426 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:22:11, skipping insertion in model container [2021-10-11 00:22:11,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:11" (2/3) ... [2021-10-11 00:22:11,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aefa426 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:22:11, skipping insertion in model container [2021-10-11 00:22:11,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:22:11" (3/3) ... [2021-10-11 00:22:11,544 INFO L111 eAbstractionObserver]: Analyzing ICFG ChenFlurMukhopadhyay-SAS2012-Ex1.02.c [2021-10-11 00:22:11,556 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:22:11,558 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2021-10-11 00:22:11,567 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-11 00:22:11,589 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:22:11,589 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:22:11,589 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:22:11,589 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:22:11,590 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:22:11,590 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:22:11,590 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:22:11,590 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:22:11,602 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2021-10-11 00:22:11,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-11 00:22:11,606 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:22:11,607 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-11 00:22:11,607 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:22:11,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:22:11,612 INFO L82 PathProgramCache]: Analyzing trace with hash 959367, now seen corresponding path program 1 times [2021-10-11 00:22:11,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:22:11,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555766669] [2021-10-11 00:22:11,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:22:11,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:22:11,701 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:22:11,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:22:11,711 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:22:11,728 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:22:11,729 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 00:22:11,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:22:11,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:22:11 BoogieIcfgContainer [2021-10-11 00:22:11,747 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:22:11,748 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:22:11,748 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:22:11,749 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:22:11,749 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:22:11" (3/4) ... [2021-10-11 00:22:11,752 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 00:22:11,786 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_543a4fd7-97a2-4c23-8191-7dc730e52ed9/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:22:11,786 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:22:11,788 INFO L168 Benchmark]: Toolchain (without parser) took 903.83 ms. Allocated memory is still 111.1 MB. Free memory was 85.0 MB in the beginning and 63.1 MB in the end (delta: 21.9 MB). Peak memory consumption was 19.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:22:11,789 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 111.1 MB. Free memory was 69.2 MB in the beginning and 69.1 MB in the end (delta: 117.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:22:11,790 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.94 ms. Allocated memory is still 111.1 MB. Free memory was 85.0 MB in the beginning and 88.0 MB in the end (delta: -3.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:22:11,791 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.82 ms. Allocated memory is still 111.1 MB. Free memory was 88.0 MB in the beginning and 86.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:22:11,792 INFO L168 Benchmark]: Boogie Preprocessor took 19.40 ms. Allocated memory is still 111.1 MB. Free memory was 86.7 MB in the beginning and 85.9 MB in the end (delta: 749.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:22:11,793 INFO L168 Benchmark]: RCFGBuilder took 328.61 ms. Allocated memory is still 111.1 MB. Free memory was 85.9 MB in the beginning and 76.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:22:11,794 INFO L168 Benchmark]: TraceAbstraction took 213.98 ms. Allocated memory is still 111.1 MB. Free memory was 75.7 MB in the beginning and 64.7 MB in the end (delta: 11.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 00:22:11,795 INFO L168 Benchmark]: Witness Printer took 37.93 ms. Allocated memory is still 111.1 MB. Free memory was 64.7 MB in the beginning and 63.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:22:11,799 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 111.1 MB. Free memory was 69.2 MB in the beginning and 69.1 MB in the end (delta: 117.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 258.94 ms. Allocated memory is still 111.1 MB. Free memory was 85.0 MB in the beginning and 88.0 MB in the end (delta: -3.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.82 ms. Allocated memory is still 111.1 MB. Free memory was 88.0 MB in the beginning and 86.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.40 ms. Allocated memory is still 111.1 MB. Free memory was 86.7 MB in the beginning and 85.9 MB in the end (delta: 749.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 328.61 ms. Allocated memory is still 111.1 MB. Free memory was 85.9 MB in the beginning and 76.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 213.98 ms. Allocated memory is still 111.1 MB. Free memory was 75.7 MB in the beginning and 64.7 MB in the end (delta: 11.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 37.93 ms. Allocated memory is still 111.1 MB. Free memory was 64.7 MB in the beginning and 63.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 26]: integer overflow possible integer overflow possible We found a FailurePath: [L23] int x, oldx; [L24] x = __VERIFIER_nondet_int() [L25] oldx = __VERIFIER_nondet_int() [L26] x > 0 && x < 100 && x >= 2*oldx + 10 [L26] 2*oldx - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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...