./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex3.03.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5869628d-2d9c-4366-a41c-90f0f2743423/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5869628d-2d9c-4366-a41c-90f0f2743423/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5869628d-2d9c-4366-a41c-90f0f2743423/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5869628d-2d9c-4366-a41c-90f0f2743423/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex3.03.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5869628d-2d9c-4366-a41c-90f0f2743423/bin/utaipan-q2qaUkNPG8/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5869628d-2d9c-4366-a41c-90f0f2743423/bin/utaipan-q2qaUkNPG8 --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 7fffd3db3d3726ee083b6e932fb49b2b545a203f .............................................................................................................................................................................................................................................................. 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 0.2.1-dev-4e77c04 [2021-10-13 07:46:21,488 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:46:21,491 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:46:21,549 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:46:21,550 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:46:21,556 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:46:21,558 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:46:21,564 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:46:21,567 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:46:21,574 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:46:21,575 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:46:21,577 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:46:21,578 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:46:21,582 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:46:21,584 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:46:21,591 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:46:21,592 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:46:21,593 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:46:21,599 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:46:21,608 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:46:21,610 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:46:21,613 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:46:21,617 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:46:21,619 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:46:21,630 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:46:21,630 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:46:21,631 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:46:21,632 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:46:21,633 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:46:21,634 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:46:21,635 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:46:21,636 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:46:21,637 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:46:21,638 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:46:21,647 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:46:21,647 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:46:21,648 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:46:21,648 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:46:21,649 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:46:21,650 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:46:21,651 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:46:21,652 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5869628d-2d9c-4366-a41c-90f0f2743423/bin/utaipan-q2qaUkNPG8/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-10-13 07:46:21,708 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:46:21,708 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:46:21,710 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:46:21,711 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:46:21,711 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:46:21,711 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:46:21,711 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:46:21,719 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:46:21,719 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:46:21,720 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:46:21,721 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:46:21,721 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:46:21,721 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:46:21,722 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:46:21,722 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:46:21,723 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:46:21,724 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 07:46:21,724 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:46:21,724 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:46:21,724 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:46:21,725 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:46:21,725 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:46:21,725 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-13 07:46:21,725 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:46:21,726 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:46:21,726 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:46:21,726 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:46:21,726 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:46:21,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:46:21,729 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:46:21,729 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:46:21,729 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:46:21,730 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:46:21,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:46:21,730 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:46:21,730 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:46:21,731 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:46:21,731 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_5869628d-2d9c-4366-a41c-90f0f2743423/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5869628d-2d9c-4366-a41c-90f0f2743423/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7fffd3db3d3726ee083b6e932fb49b2b545a203f [2021-10-13 07:46:22,076 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:46:22,104 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:46:22,107 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:46:22,109 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:46:22,110 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:46:22,111 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5869628d-2d9c-4366-a41c-90f0f2743423/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex3.03.c [2021-10-13 07:46:22,209 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5869628d-2d9c-4366-a41c-90f0f2743423/bin/utaipan-q2qaUkNPG8/data/2cdab5985/18512a4d799b405ca827292d3766727b/FLAG84de9d739 [2021-10-13 07:46:22,772 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:46:22,773 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5869628d-2d9c-4366-a41c-90f0f2743423/sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex3.03.c [2021-10-13 07:46:22,788 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5869628d-2d9c-4366-a41c-90f0f2743423/bin/utaipan-q2qaUkNPG8/data/2cdab5985/18512a4d799b405ca827292d3766727b/FLAG84de9d739 [2021-10-13 07:46:23,128 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5869628d-2d9c-4366-a41c-90f0f2743423/bin/utaipan-q2qaUkNPG8/data/2cdab5985/18512a4d799b405ca827292d3766727b [2021-10-13 07:46:23,132 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:46:23,134 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:46:23,136 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:46:23,136 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:46:23,141 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:46:23,142 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:46:23" (1/1) ... [2021-10-13 07:46:23,143 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d4b54cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:23, skipping insertion in model container [2021-10-13 07:46:23,143 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:46:23" (1/1) ... [2021-10-13 07:46:23,153 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:46:23,168 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:46:23,349 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:46:23,388 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:46:23,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:46:23,425 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:46:23,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:23 WrapperNode [2021-10-13 07:46:23,426 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:46:23,427 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:46:23,427 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:46:23,427 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:46:23,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:23" (1/1) ... [2021-10-13 07:46:23,442 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:23" (1/1) ... [2021-10-13 07:46:23,473 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:46:23,475 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:46:23,475 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:46:23,475 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:46:23,485 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:23" (1/1) ... [2021-10-13 07:46:23,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:23" (1/1) ... [2021-10-13 07:46:23,489 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:23" (1/1) ... [2021-10-13 07:46:23,489 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:23" (1/1) ... [2021-10-13 07:46:23,492 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:23" (1/1) ... [2021-10-13 07:46:23,498 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:23" (1/1) ... [2021-10-13 07:46:23,505 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:23" (1/1) ... [2021-10-13 07:46:23,507 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:46:23,509 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:46:23,510 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:46:23,511 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:46:23,512 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:23" (1/1) ... [2021-10-13 07:46:23,522 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:46:23,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5869628d-2d9c-4366-a41c-90f0f2743423/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:46:23,557 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5869628d-2d9c-4366-a41c-90f0f2743423/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:46:23,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5869628d-2d9c-4366-a41c-90f0f2743423/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:46:23,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:46:23,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:46:23,903 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:46:23,903 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-13 07:46:23,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:46:23 BoogieIcfgContainer [2021-10-13 07:46:23,906 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:46:23,909 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:46:23,909 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:46:23,923 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:46:23,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:46:23" (1/3) ... [2021-10-13 07:46:23,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31a3ae18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:46:23, skipping insertion in model container [2021-10-13 07:46:23,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:23" (2/3) ... [2021-10-13 07:46:23,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31a3ae18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:46:23, skipping insertion in model container [2021-10-13 07:46:23,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:46:23" (3/3) ... [2021-10-13 07:46:23,927 INFO L111 eAbstractionObserver]: Analyzing ICFG ChenFlurMukhopadhyay-SAS2012-Ex3.03.c [2021-10-13 07:46:23,933 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:46:23,933 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-13 07:46:24,005 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:46:24,013 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:46:24,014 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-13 07:46:24,035 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 8 states have (on average 1.875) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:46:24,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 07:46:24,041 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:46:24,042 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 07:46:24,043 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 07:46:24,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:46:24,049 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2021-10-13 07:46:24,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:46:24,084 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079249560] [2021-10-13 07:46:24,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:46:24,086 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:46:24,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:46:24,215 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 07:46:24,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:46:24,246 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-13 07:46:24,249 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 07:46:24,250 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:46:24,269 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:46:24,270 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:46:24,270 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:46:24,271 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:46:24,271 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:46:24,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:46:24,280 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:46:24,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:46:24 BoogieIcfgContainer [2021-10-13 07:46:24,305 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:46:24,306 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:46:24,307 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:46:24,307 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:46:24,307 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:46:23" (3/4) ... [2021-10-13 07:46:24,310 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 07:46:24,343 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5869628d-2d9c-4366-a41c-90f0f2743423/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:46:24,343 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:46:24,345 INFO L168 Benchmark]: Toolchain (without parser) took 1210.21 ms. Allocated memory is still 96.5 MB. Free memory was 62.0 MB in the beginning and 49.6 MB in the end (delta: 12.4 MB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:46:24,346 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 96.5 MB. Free memory was 66.5 MB in the beginning and 66.4 MB in the end (delta: 27.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:46:24,347 INFO L168 Benchmark]: CACSL2BoogieTranslator took 290.13 ms. Allocated memory is still 96.5 MB. Free memory was 61.8 MB in the beginning and 74.2 MB in the end (delta: -12.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:46:24,348 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.02 ms. Allocated memory is still 96.5 MB. Free memory was 74.2 MB in the beginning and 73.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:46:24,349 INFO L168 Benchmark]: Boogie Preprocessor took 32.78 ms. Allocated memory is still 96.5 MB. Free memory was 73.1 MB in the beginning and 72.3 MB in the end (delta: 804.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:46:24,350 INFO L168 Benchmark]: RCFGBuilder took 397.41 ms. Allocated memory is still 96.5 MB. Free memory was 72.1 MB in the beginning and 63.3 MB in the end (delta: 8.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:46:24,351 INFO L168 Benchmark]: TraceAbstraction took 396.82 ms. Allocated memory is still 96.5 MB. Free memory was 63.0 MB in the beginning and 51.1 MB in the end (delta: 11.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:46:24,352 INFO L168 Benchmark]: Witness Printer took 36.59 ms. Allocated memory is still 96.5 MB. Free memory was 50.8 MB in the beginning and 49.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:46:24,357 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 96.5 MB. Free memory was 66.5 MB in the beginning and 66.4 MB in the end (delta: 27.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 290.13 ms. Allocated memory is still 96.5 MB. Free memory was 61.8 MB in the beginning and 74.2 MB in the end (delta: -12.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.02 ms. Allocated memory is still 96.5 MB. Free memory was 74.2 MB in the beginning and 73.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.78 ms. Allocated memory is still 96.5 MB. Free memory was 73.1 MB in the beginning and 72.3 MB in the end (delta: 804.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 397.41 ms. Allocated memory is still 96.5 MB. Free memory was 72.1 MB in the beginning and 63.3 MB in the end (delta: 8.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 396.82 ms. Allocated memory is still 96.5 MB. Free memory was 63.0 MB in the beginning and 51.1 MB in the end (delta: 11.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Witness Printer took 36.59 ms. Allocated memory is still 96.5 MB. Free memory was 50.8 MB in the beginning and 49.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 28]: integer overflow possible integer overflow possible We found a FailurePath: [L23] int x, y, z; [L24] x = __VERIFIER_nondet_int() [L25] y = __VERIFIER_nondet_int() [L26] z = __VERIFIER_nondet_int() [L27] COND TRUE x > 0 [L28] x + y - UnprovableResult [Line: 28]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 29]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 29]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 30]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 30]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 274.4ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 14.2ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 4.6ms SsaConstructionTime, 21.5ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 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! [2021-10-13 07:46:24,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5869628d-2d9c-4366-a41c-90f0f2743423/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...