./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-aaron4.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bb986a-789d-4b5f-afe7-3316365c3134/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bb986a-789d-4b5f-afe7-3316365c3134/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bb986a-789d-4b5f-afe7-3316365c3134/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bb986a-789d-4b5f-afe7-3316365c3134/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-aaron4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bb986a-789d-4b5f-afe7-3316365c3134/bin/utaipan-SDwSMHVbGG/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bb986a-789d-4b5f-afe7-3316365c3134/bin/utaipan-SDwSMHVbGG --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 db1891a9bd072b88011322f279db8b4a1824beee21553f836baa305cd6d07cfb .................................................................................................................................................................................................................................................................................. 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-b2eff8b [2021-10-29 05:32:11,367 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:32:11,370 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:32:11,421 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:32:11,422 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:32:11,426 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:32:11,428 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:32:11,432 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:32:11,435 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:32:11,444 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:32:11,445 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:32:11,447 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:32:11,448 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:32:11,451 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:32:11,454 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:32:11,463 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:32:11,464 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:32:11,465 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:32:11,467 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:32:11,470 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:32:11,472 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:32:11,473 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:32:11,475 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:32:11,476 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:32:11,480 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:32:11,480 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:32:11,481 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:32:11,482 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:32:11,483 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:32:11,484 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:32:11,485 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:32:11,486 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:32:11,487 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:32:11,488 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:32:11,489 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:32:11,489 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:32:11,490 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:32:11,491 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:32:11,491 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:32:11,493 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:32:11,494 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:32:11,495 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bb986a-789d-4b5f-afe7-3316365c3134/bin/utaipan-SDwSMHVbGG/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-10-29 05:32:11,530 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:32:11,531 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:32:11,532 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:32:11,532 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:32:11,532 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:32:11,533 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:32:11,533 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:32:11,533 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:32:11,533 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:32:11,534 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:32:11,534 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:32:11,534 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:32:11,535 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:32:11,535 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:32:11,535 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:32:11,539 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:32:11,540 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-29 05:32:11,540 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:32:11,540 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:32:11,541 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:32:11,541 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:32:11,541 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:32:11,541 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-29 05:32:11,542 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:32:11,542 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:32:11,543 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:32:11,543 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:32:11,543 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:32:11,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:32:11,544 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:32:11,545 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:32:11,545 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:32:11,545 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:32:11,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:32:11,546 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:32:11,546 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:32:11,547 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:32:11,548 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_89bb986a-789d-4b5f-afe7-3316365c3134/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bb986a-789d-4b5f-afe7-3316365c3134/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> db1891a9bd072b88011322f279db8b4a1824beee21553f836baa305cd6d07cfb [2021-10-29 05:32:11,825 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:32:11,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:32:11,855 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:32:11,856 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:32:11,857 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:32:11,859 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bb986a-789d-4b5f-afe7-3316365c3134/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-aaron4.c [2021-10-29 05:32:11,942 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bb986a-789d-4b5f-afe7-3316365c3134/bin/utaipan-SDwSMHVbGG/data/d03bb3a40/144019e5a9cc413dab1434b4eb1dd82a/FLAGfe16819c2 [2021-10-29 05:32:12,396 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:32:12,396 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bb986a-789d-4b5f-afe7-3316365c3134/sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-aaron4.c [2021-10-29 05:32:12,406 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bb986a-789d-4b5f-afe7-3316365c3134/bin/utaipan-SDwSMHVbGG/data/d03bb3a40/144019e5a9cc413dab1434b4eb1dd82a/FLAGfe16819c2 [2021-10-29 05:32:12,781 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bb986a-789d-4b5f-afe7-3316365c3134/bin/utaipan-SDwSMHVbGG/data/d03bb3a40/144019e5a9cc413dab1434b4eb1dd82a [2021-10-29 05:32:12,783 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:32:12,785 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:32:12,787 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:32:12,787 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:32:12,790 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:32:12,791 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:32:12" (1/1) ... [2021-10-29 05:32:12,792 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14184bfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:32:12, skipping insertion in model container [2021-10-29 05:32:12,792 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:32:12" (1/1) ... [2021-10-29 05:32:12,799 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:32:12,813 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:32:12,971 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:32:12,974 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:32:12,992 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:32:13,004 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:32:13,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:32:13 WrapperNode [2021-10-29 05:32:13,005 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:32:13,006 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:32:13,006 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:32:13,006 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:32:13,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:32:13" (1/1) ... [2021-10-29 05:32:13,019 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:32:13" (1/1) ... [2021-10-29 05:32:13,039 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:32:13,040 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:32:13,040 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:32:13,040 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:32:13,049 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:32:13" (1/1) ... [2021-10-29 05:32:13,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:32:13" (1/1) ... [2021-10-29 05:32:13,050 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:32:13" (1/1) ... [2021-10-29 05:32:13,051 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:32:13" (1/1) ... [2021-10-29 05:32:13,053 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:32:13" (1/1) ... [2021-10-29 05:32:13,057 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:32:13" (1/1) ... [2021-10-29 05:32:13,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:32:13" (1/1) ... [2021-10-29 05:32:13,060 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:32:13,061 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:32:13,062 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:32:13,062 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:32:13,063 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:32:13" (1/1) ... [2021-10-29 05:32:13,071 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:32:13,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bb986a-789d-4b5f-afe7-3316365c3134/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:32:13,091 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bb986a-789d-4b5f-afe7-3316365c3134/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:32:13,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bb986a-789d-4b5f-afe7-3316365c3134/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:32:13,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:32:13,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:32:13,333 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:32:13,333 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-29 05:32:13,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:32:13 BoogieIcfgContainer [2021-10-29 05:32:13,335 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:32:13,337 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:32:13,337 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:32:13,340 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:32:13,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:32:12" (1/3) ... [2021-10-29 05:32:13,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a44d2d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:32:13, skipping insertion in model container [2021-10-29 05:32:13,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:32:13" (2/3) ... [2021-10-29 05:32:13,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a44d2d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:32:13, skipping insertion in model container [2021-10-29 05:32:13,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:32:13" (3/3) ... [2021-10-29 05:32:13,343 INFO L111 eAbstractionObserver]: Analyzing ICFG ChawdharyCookGulwaniSagivYang-ESOP2008-aaron4.c [2021-10-29 05:32:13,349 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:32:13,349 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-29 05:32:13,393 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:32:13,400 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, mAutomataTypeConcurrency=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 [2021-10-29 05:32:13,400 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-10-29 05:32:13,415 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 19 states have (on average 1.894736842105263) internal successors, (36), 29 states have internal predecessors, (36), 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) [2021-10-29 05:32:13,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-29 05:32:13,420 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:32:13,421 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-29 05:32:13,422 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-10-29 05:32:13,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:32:13,427 INFO L85 PathProgramCache]: Analyzing trace with hash 959367, now seen corresponding path program 1 times [2021-10-29 05:32:13,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:32:13,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036481026] [2021-10-29 05:32:13,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:32:13,439 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:32:13,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:32:13,538 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 05:32:13,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:32:13,574 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-29 05:32:13,577 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 05:32:13,578 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 05:32:13,580 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 05:32:13,580 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 05:32:13,581 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 05:32:13,581 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 05:32:13,581 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 05:32:13,582 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 05:32:13,582 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 05:32:13,582 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 05:32:13,583 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 05:32:13,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 05:32:13,587 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-10-29 05:32:13,591 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:32:13,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:32:13 BoogieIcfgContainer [2021-10-29 05:32:13,606 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:32:13,607 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:32:13,607 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:32:13,608 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:32:13,608 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:32:13" (3/4) ... [2021-10-29 05:32:13,610 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-29 05:32:13,643 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bb986a-789d-4b5f-afe7-3316365c3134/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:32:13,644 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:32:13,646 INFO L168 Benchmark]: Toolchain (without parser) took 859.72 ms. Allocated memory is still 100.7 MB. Free memory was 67.1 MB in the beginning and 49.3 MB in the end (delta: 17.8 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. [2021-10-29 05:32:13,646 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 100.7 MB. Free memory is still 54.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:32:13,647 INFO L168 Benchmark]: CACSL2BoogieTranslator took 218.78 ms. Allocated memory is still 100.7 MB. Free memory was 66.9 MB in the beginning and 76.9 MB in the end (delta: -10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:32:13,647 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.24 ms. Allocated memory is still 100.7 MB. Free memory was 76.9 MB in the beginning and 75.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:32:13,648 INFO L168 Benchmark]: Boogie Preprocessor took 20.64 ms. Allocated memory is still 100.7 MB. Free memory was 75.5 MB in the beginning and 74.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:32:13,649 INFO L168 Benchmark]: RCFGBuilder took 273.76 ms. Allocated memory is still 100.7 MB. Free memory was 74.5 MB in the beginning and 64.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:32:13,649 INFO L168 Benchmark]: TraceAbstraction took 269.82 ms. Allocated memory is still 100.7 MB. Free memory was 64.0 MB in the beginning and 50.8 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:32:13,650 INFO L168 Benchmark]: Witness Printer took 36.36 ms. Allocated memory is still 100.7 MB. Free memory was 50.8 MB in the beginning and 49.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:32:13,653 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 100.7 MB. Free memory is still 54.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 218.78 ms. Allocated memory is still 100.7 MB. Free memory was 66.9 MB in the beginning and 76.9 MB in the end (delta: -10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.24 ms. Allocated memory is still 100.7 MB. Free memory was 76.9 MB in the beginning and 75.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.64 ms. Allocated memory is still 100.7 MB. Free memory was 75.5 MB in the beginning and 74.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 273.76 ms. Allocated memory is still 100.7 MB. Free memory was 74.5 MB in the beginning and 64.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 269.82 ms. Allocated memory is still 100.7 MB. Free memory was 64.0 MB in the beginning and 50.8 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 36.36 ms. Allocated memory is still 100.7 MB. Free memory was 50.8 MB in the beginning and 49.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 21]: integer overflow possible integer overflow possible We found a FailurePath: [L14] int i, j, k, an, bn, tk; [L15] i = __VERIFIER_nondet_int() [L16] j = __VERIFIER_nondet_int() [L17] k = __VERIFIER_nondet_int() [L18] an = __VERIFIER_nondet_int() [L19] bn = __VERIFIER_nondet_int() [L20] tk = __VERIFIER_nondet_int() [L21] ((an >= i && bn >= j) || (an >= i && bn <= j) || (an <= i && bn >= j)) && k >= tk + 1 [L21] tk + 1 - UnprovableResult [Line: 21]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 24]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 24]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - 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: 28]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 31]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 31]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 33]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 33]: 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, 30 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s 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! [2021-10-29 05:32:13,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bb986a-789d-4b5f-afe7-3316365c3134/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...