./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/terminator_01.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb79fde-7d4a-4305-9a57-eed25c3c82c1/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb79fde-7d4a-4305-9a57-eed25c3c82c1/bin/utaipan-tZwUujhuQw/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb79fde-7d4a-4305-9a57-eed25c3c82c1/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb79fde-7d4a-4305-9a57-eed25c3c82c1/bin/utaipan-tZwUujhuQw/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/terminator_01.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb79fde-7d4a-4305-9a57-eed25c3c82c1/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb79fde-7d4a-4305-9a57-eed25c3c82c1/bin/utaipan-tZwUujhuQw --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 82b79a9a0e08e4cbe68dbb8ee267b92366638418cbe09cb6aac3231ced8eab7e ............................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-20 05:45:15,466 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 05:45:15,469 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 05:45:15,511 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 05:45:15,512 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 05:45:15,514 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 05:45:15,516 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 05:45:15,520 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 05:45:15,523 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 05:45:15,525 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 05:45:15,526 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 05:45:15,529 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 05:45:15,529 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 05:45:15,531 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 05:45:15,534 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 05:45:15,536 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 05:45:15,537 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 05:45:15,539 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 05:45:15,542 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 05:45:15,546 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 05:45:15,549 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 05:45:15,551 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 05:45:15,553 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 05:45:15,555 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 05:45:15,561 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 05:45:15,561 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 05:45:15,562 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 05:45:15,563 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 05:45:15,564 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 05:45:15,566 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 05:45:15,567 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 05:45:15,568 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 05:45:15,569 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 05:45:15,571 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 05:45:15,573 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 05:45:15,573 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 05:45:15,574 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 05:45:15,575 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 05:45:15,576 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 05:45:15,577 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 05:45:15,579 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 05:45:15,580 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb79fde-7d4a-4305-9a57-eed25c3c82c1/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-20 05:45:15,613 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 05:45:15,614 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 05:45:15,615 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 05:45:15,615 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 05:45:15,615 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 05:45:15,616 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 05:45:15,616 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-20 05:45:15,616 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 05:45:15,617 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 05:45:15,617 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-20 05:45:15,617 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-20 05:45:15,617 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 05:45:15,618 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-20 05:45:15,618 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-20 05:45:15,618 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-20 05:45:15,619 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 05:45:15,620 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-20 05:45:15,620 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-20 05:45:15,620 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-20 05:45:15,621 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 05:45:15,621 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-20 05:45:15,621 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 05:45:15,621 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-20 05:45:15,622 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-20 05:45:15,622 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-20 05:45:15,622 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-20 05:45:15,623 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 05:45:15,623 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-20 05:45:15,623 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 05:45:15,624 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 05:45:15,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:45:15,624 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 05:45:15,625 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 05:45:15,625 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-20 05:45:15,625 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-20 05:45:15,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-20 05:45:15,626 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-20 05:45:15,626 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 05:45:15,626 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 05:45:15,626 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_adb79fde-7d4a-4305-9a57-eed25c3c82c1/bin/utaipan-tZwUujhuQw/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb79fde-7d4a-4305-9a57-eed25c3c82c1/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 82b79a9a0e08e4cbe68dbb8ee267b92366638418cbe09cb6aac3231ced8eab7e [2021-10-20 05:45:16,042 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 05:45:16,078 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 05:45:16,083 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 05:45:16,085 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 05:45:16,086 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 05:45:16,087 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb79fde-7d4a-4305-9a57-eed25c3c82c1/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/loops/terminator_01.c [2021-10-20 05:45:16,178 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb79fde-7d4a-4305-9a57-eed25c3c82c1/bin/utaipan-tZwUujhuQw/data/9b4c45377/009d7871460d4451a96c4daef80024ce/FLAG5fedd9b1a [2021-10-20 05:45:16,897 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 05:45:16,898 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb79fde-7d4a-4305-9a57-eed25c3c82c1/sv-benchmarks/c/loops/terminator_01.c [2021-10-20 05:45:16,916 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb79fde-7d4a-4305-9a57-eed25c3c82c1/bin/utaipan-tZwUujhuQw/data/9b4c45377/009d7871460d4451a96c4daef80024ce/FLAG5fedd9b1a [2021-10-20 05:45:17,255 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb79fde-7d4a-4305-9a57-eed25c3c82c1/bin/utaipan-tZwUujhuQw/data/9b4c45377/009d7871460d4451a96c4daef80024ce [2021-10-20 05:45:17,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 05:45:17,261 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 05:45:17,264 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 05:45:17,264 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 05:45:17,268 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 05:45:17,269 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:45:17" (1/1) ... [2021-10-20 05:45:17,271 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17d69abf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:45:17, skipping insertion in model container [2021-10-20 05:45:17,271 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:45:17" (1/1) ... [2021-10-20 05:45:17,289 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 05:45:17,305 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 05:45:17,572 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb79fde-7d4a-4305-9a57-eed25c3c82c1/sv-benchmarks/c/loops/terminator_01.c[325,338] [2021-10-20 05:45:17,597 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:45:17,609 INFO L203 MainTranslator]: Completed pre-run [2021-10-20 05:45:17,624 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb79fde-7d4a-4305-9a57-eed25c3c82c1/sv-benchmarks/c/loops/terminator_01.c[325,338] [2021-10-20 05:45:17,628 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:45:17,645 INFO L208 MainTranslator]: Completed translation [2021-10-20 05:45:17,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:45:17 WrapperNode [2021-10-20 05:45:17,646 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 05:45:17,647 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-20 05:45:17,648 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-20 05:45:17,648 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-20 05:45:17,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:45:17" (1/1) ... [2021-10-20 05:45:17,666 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:45:17" (1/1) ... [2021-10-20 05:45:17,690 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-20 05:45:17,691 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-20 05:45:17,692 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-20 05:45:17,692 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-20 05:45:17,703 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:45:17" (1/1) ... [2021-10-20 05:45:17,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:45:17" (1/1) ... [2021-10-20 05:45:17,707 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:45:17" (1/1) ... [2021-10-20 05:45:17,708 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:45:17" (1/1) ... [2021-10-20 05:45:17,725 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:45:17" (1/1) ... [2021-10-20 05:45:17,735 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:45:17" (1/1) ... [2021-10-20 05:45:17,742 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:45:17" (1/1) ... [2021-10-20 05:45:17,745 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-20 05:45:17,747 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-20 05:45:17,750 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-20 05:45:17,750 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-20 05:45:17,752 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:45:17" (1/1) ... [2021-10-20 05:45:17,761 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:45:17,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb79fde-7d4a-4305-9a57-eed25c3c82c1/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 05:45:17,795 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb79fde-7d4a-4305-9a57-eed25c3c82c1/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-20 05:45:17,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb79fde-7d4a-4305-9a57-eed25c3c82c1/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-20 05:45:17,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-20 05:45:17,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-20 05:45:17,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-20 05:45:17,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-20 05:45:17,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-20 05:45:17,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-20 05:45:17,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-20 05:45:18,252 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-20 05:45:18,252 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-20 05:45:18,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:45:18 BoogieIcfgContainer [2021-10-20 05:45:18,256 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-20 05:45:18,258 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-20 05:45:18,258 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-20 05:45:18,263 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-20 05:45:18,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 05:45:17" (1/3) ... [2021-10-20 05:45:18,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fecccd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:45:18, skipping insertion in model container [2021-10-20 05:45:18,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:45:17" (2/3) ... [2021-10-20 05:45:18,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fecccd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:45:18, skipping insertion in model container [2021-10-20 05:45:18,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:45:18" (3/3) ... [2021-10-20 05:45:18,268 INFO L111 eAbstractionObserver]: Analyzing ICFG terminator_01.c [2021-10-20 05:45:18,275 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-20 05:45:18,276 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-20 05:45:18,355 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-20 05:45:18,376 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 [2021-10-20 05:45:18,391 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-20 05:45:18,419 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 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) [2021-10-20 05:45:18,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-20 05:45:18,439 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:45:18,440 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-20 05:45:18,441 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:45:18,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:45:18,448 INFO L82 PathProgramCache]: Analyzing trace with hash 58614883, now seen corresponding path program 1 times [2021-10-20 05:45:18,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:45:18,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586534883] [2021-10-20 05:45:18,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:45:18,471 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:45:18,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:45:18,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:45:18,718 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:45:18,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586534883] [2021-10-20 05:45:18,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586534883] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 05:45:18,723 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:45:18,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-20 05:45:18,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296154881] [2021-10-20 05:45:18,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-20 05:45:18,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:45:18,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-20 05:45:18,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-20 05:45:18,769 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 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) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-10-20 05:45:18,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:45:18,793 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2021-10-20 05:45:18,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-20 05:45:18,796 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) Word has length 5 [2021-10-20 05:45:18,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:45:18,806 INFO L225 Difference]: With dead ends: 15 [2021-10-20 05:45:18,807 INFO L226 Difference]: Without dead ends: 7 [2021-10-20 05:45:18,810 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-20 05:45:18,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-10-20 05:45:18,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-10-20 05:45:18,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 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) [2021-10-20 05:45:18,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2021-10-20 05:45:18,852 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2021-10-20 05:45:18,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:45:18,853 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2021-10-20 05:45:18,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-10-20 05:45:18,855 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2021-10-20 05:45:18,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-20 05:45:18,856 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:45:18,856 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-20 05:45:18,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-20 05:45:18,858 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:45:18,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:45:18,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1810415056, now seen corresponding path program 1 times [2021-10-20 05:45:18,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:45:18,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093460670] [2021-10-20 05:45:18,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:45:18,865 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:45:18,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-20 05:45:18,925 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-20 05:45:18,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-20 05:45:18,980 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-20 05:45:18,981 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-20 05:45:18,983 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 05:45:18,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-20 05:45:18,995 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-20 05:45:19,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 05:45:19 BoogieIcfgContainer [2021-10-20 05:45:19,020 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-20 05:45:19,021 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-20 05:45:19,021 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-20 05:45:19,022 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-20 05:45:19,022 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:45:18" (3/4) ... [2021-10-20 05:45:19,025 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-20 05:45:19,096 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb79fde-7d4a-4305-9a57-eed25c3c82c1/bin/utaipan-tZwUujhuQw/witness.graphml [2021-10-20 05:45:19,096 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-20 05:45:19,099 INFO L168 Benchmark]: Toolchain (without parser) took 1836.53 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 50.3 MB in the beginning and 86.8 MB in the end (delta: -36.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-20 05:45:19,100 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 92.3 MB. Free memory is still 66.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:45:19,101 INFO L168 Benchmark]: CACSL2BoogieTranslator took 382.63 ms. Allocated memory is still 92.3 MB. Free memory was 50.1 MB in the beginning and 67.1 MB in the end (delta: -17.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-20 05:45:19,102 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.90 ms. Allocated memory is still 92.3 MB. Free memory was 67.1 MB in the beginning and 65.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 05:45:19,103 INFO L168 Benchmark]: Boogie Preprocessor took 55.13 ms. Allocated memory is still 92.3 MB. Free memory was 65.6 MB in the beginning and 64.6 MB in the end (delta: 997.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:45:19,104 INFO L168 Benchmark]: RCFGBuilder took 508.45 ms. Allocated memory is still 92.3 MB. Free memory was 64.6 MB in the beginning and 53.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-20 05:45:19,104 INFO L168 Benchmark]: TraceAbstraction took 762.53 ms. Allocated memory is still 92.3 MB. Free memory was 53.5 MB in the beginning and 32.0 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-20 05:45:19,106 INFO L168 Benchmark]: Witness Printer took 75.41 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 32.0 MB in the beginning and 86.8 MB in the end (delta: -54.8 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. [2021-10-20 05:45:19,110 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 92.3 MB. Free memory is still 66.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 382.63 ms. Allocated memory is still 92.3 MB. Free memory was 50.1 MB in the beginning and 67.1 MB in the end (delta: -17.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.90 ms. Allocated memory is still 92.3 MB. Free memory was 67.1 MB in the beginning and 65.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 55.13 ms. Allocated memory is still 92.3 MB. Free memory was 65.6 MB in the beginning and 64.6 MB in the end (delta: 997.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 508.45 ms. Allocated memory is still 92.3 MB. Free memory was 64.6 MB in the beginning and 53.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 762.53 ms. Allocated memory is still 92.3 MB. Free memory was 53.5 MB in the beginning and 32.0 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Witness Printer took 75.41 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 32.0 MB in the beginning and 86.8 MB in the end (delta: -54.8 MB). Peak memory consumption was 6.4 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, 0.0ms 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: 7]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L15] int x=__VERIFIER_nondet_int(); [L15] int x=__VERIFIER_nondet_int(); [L16] int *p = &x; [L18] EXPR \read(x) [L18] COND FALSE !(x<100) [L6] COND TRUE !(cond) [L7] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 639.5ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 36.6ms, AutomataDifference: 72.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 9 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 21.6ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 23.1ms SsaConstructionTime, 94.5ms SatisfiabilityAnalysisTime, 81.1ms InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 4 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-20 05:45:19,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb79fde-7d4a-4305-9a57-eed25c3c82c1/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...