./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.02.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99de435-8dee-4cc0-b8f5-ad9ca7e75b27/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99de435-8dee-4cc0-b8f5-ad9ca7e75b27/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99de435-8dee-4cc0-b8f5-ad9ca7e75b27/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99de435-8dee-4cc0-b8f5-ad9ca7e75b27/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.02.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99de435-8dee-4cc0-b8f5-ad9ca7e75b27/bin/utaipan-aC7eJsxGYH/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99de435-8dee-4cc0-b8f5-ad9ca7e75b27/bin/utaipan-aC7eJsxGYH --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 b4338e1379012bc8b399e1e40f6c2f40d3b52a1413cd5177c6e66906838ddcea --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:55:56,567 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:55:56,570 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:55:56,613 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:55:56,613 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:55:56,617 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:55:56,619 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:55:56,621 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:55:56,623 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:55:56,624 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:55:56,625 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:55:56,626 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:55:56,626 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:55:56,627 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:55:56,629 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:55:56,630 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:55:56,631 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:55:56,635 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:55:56,637 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:55:56,646 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:55:56,650 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:55:56,652 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:55:56,660 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:55:56,662 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:55:56,669 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:55:56,670 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:55:56,670 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:55:56,671 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:55:56,672 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:55:56,673 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:55:56,674 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:55:56,675 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:55:56,676 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:55:56,677 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:55:56,678 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:55:56,678 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:55:56,679 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:55:56,680 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:55:56,680 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:55:56,681 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:55:56,682 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:55:56,683 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99de435-8dee-4cc0-b8f5-ad9ca7e75b27/bin/utaipan-aC7eJsxGYH/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-11-03 04:55:56,710 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:55:56,720 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:55:56,721 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:55:56,722 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:55:56,722 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:55:56,723 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:55:56,723 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:55:56,723 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:55:56,723 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:55:56,723 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:55:56,725 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:55:56,725 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:55:56,725 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:55:56,725 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:55:56,726 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:55:56,726 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:55:56,727 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-03 04:55:56,727 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:55:56,727 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:55:56,727 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:55:56,728 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:55:56,728 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:55:56,728 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-03 04:55:56,728 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:55:56,729 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:55:56,729 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:55:56,729 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:55:56,729 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:55:56,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:55:56,731 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:55:56,732 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:55:56,732 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:55:56,732 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:55:56,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:55:56,733 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:55:56,733 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:55:56,733 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:55:56,733 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_f99de435-8dee-4cc0-b8f5-ad9ca7e75b27/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99de435-8dee-4cc0-b8f5-ad9ca7e75b27/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4338e1379012bc8b399e1e40f6c2f40d3b52a1413cd5177c6e66906838ddcea [2021-11-03 04:55:56,985 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:55:57,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:55:57,012 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:55:57,013 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:55:57,014 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:55:57,015 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99de435-8dee-4cc0-b8f5-ad9ca7e75b27/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.02.c [2021-11-03 04:55:57,090 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99de435-8dee-4cc0-b8f5-ad9ca7e75b27/bin/utaipan-aC7eJsxGYH/data/de00a9da6/d05934283f8c4120a4576d10932754ac/FLAG2ba399ce1 [2021-11-03 04:55:57,543 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:55:57,543 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99de435-8dee-4cc0-b8f5-ad9ca7e75b27/sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.02.c [2021-11-03 04:55:57,555 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99de435-8dee-4cc0-b8f5-ad9ca7e75b27/bin/utaipan-aC7eJsxGYH/data/de00a9da6/d05934283f8c4120a4576d10932754ac/FLAG2ba399ce1 [2021-11-03 04:55:57,913 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99de435-8dee-4cc0-b8f5-ad9ca7e75b27/bin/utaipan-aC7eJsxGYH/data/de00a9da6/d05934283f8c4120a4576d10932754ac [2021-11-03 04:55:57,916 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:55:57,917 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:55:57,919 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:55:57,919 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:55:57,922 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:55:57,923 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:55:57" (1/1) ... [2021-11-03 04:55:57,924 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39cf9ae0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:55:57, skipping insertion in model container [2021-11-03 04:55:57,924 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:55:57" (1/1) ... [2021-11-03 04:55:57,931 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:55:57,943 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:55:58,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:55:58,115 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:55:58,129 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:55:58,143 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:55:58,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:55:58 WrapperNode [2021-11-03 04:55:58,143 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:55:58,144 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:55:58,144 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:55:58,145 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:55:58,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:55:58" (1/1) ... [2021-11-03 04:55:58,154 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:55:58" (1/1) ... [2021-11-03 04:55:58,167 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:55:58,168 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:55:58,168 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:55:58,168 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:55:58,174 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:55:58" (1/1) ... [2021-11-03 04:55:58,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:55:58" (1/1) ... [2021-11-03 04:55:58,175 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:55:58" (1/1) ... [2021-11-03 04:55:58,175 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:55:58" (1/1) ... [2021-11-03 04:55:58,177 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:55:58" (1/1) ... [2021-11-03 04:55:58,180 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:55:58" (1/1) ... [2021-11-03 04:55:58,181 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:55:58" (1/1) ... [2021-11-03 04:55:58,182 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:55:58,183 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:55:58,183 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:55:58,184 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:55:58,185 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:55:58" (1/1) ... [2021-11-03 04:55:58,192 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:55:58,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99de435-8dee-4cc0-b8f5-ad9ca7e75b27/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:55:58,236 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99de435-8dee-4cc0-b8f5-ad9ca7e75b27/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:55:58,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99de435-8dee-4cc0-b8f5-ad9ca7e75b27/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:55:58,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:55:58,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:55:58,458 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:55:58,458 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-03 04:55:58,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:55:58 BoogieIcfgContainer [2021-11-03 04:55:58,461 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:55:58,462 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:55:58,463 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:55:58,468 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:55:58,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:55:57" (1/3) ... [2021-11-03 04:55:58,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@426cbb70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:55:58, skipping insertion in model container [2021-11-03 04:55:58,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:55:58" (2/3) ... [2021-11-03 04:55:58,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@426cbb70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:55:58, skipping insertion in model container [2021-11-03 04:55:58,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:55:58" (3/3) ... [2021-11-03 04:55:58,488 INFO L111 eAbstractionObserver]: Analyzing ICFG ChenFlurMukhopadhyay-SAS2012-Ex2.02.c [2021-11-03 04:55:58,493 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:55:58,494 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-03 04:55:58,564 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:55:58,575 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 [2021-11-03 04:55:58,576 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-03 04:55:58,589 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 10 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) [2021-11-03 04:55:58,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-03 04:55:58,611 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:55:58,612 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-03 04:55:58,612 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-03 04:55:58,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:55:58,630 INFO L85 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2021-11-03 04:55:58,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:55:58,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137744358] [2021-11-03 04:55:58,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:55:58,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:55:58,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:55:58,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:55:58,785 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:55:58,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137744358] [2021-11-03 04:55:58,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137744358] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:55:58,787 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:55:58,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 04:55:58,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260554260] [2021-11-03 04:55:58,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:55:58,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:55:58,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:55:58,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:55:58,818 INFO L87 Difference]: Start difference. First operand has 11 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 10 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 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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) [2021-11-03 04:55:58,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:55:58,889 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2021-11-03 04:55:58,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:55:58,891 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2021-11-03 04:55:58,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:55:58,899 INFO L225 Difference]: With dead ends: 11 [2021-11-03 04:55:58,899 INFO L226 Difference]: Without dead ends: 8 [2021-11-03 04:55:58,901 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:55:58,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-11-03 04:55:58,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-11-03 04:55:58,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 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) [2021-11-03 04:55:58,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-11-03 04:55:58,927 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 3 [2021-11-03 04:55:58,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:55:58,928 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-11-03 04:55:58,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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) [2021-11-03 04:55:58,928 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-11-03 04:55:58,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-03 04:55:58,929 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:55:58,929 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-03 04:55:58,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 04:55:58,930 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-03 04:55:58,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:55:58,931 INFO L85 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2021-11-03 04:55:58,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:55:58,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657210652] [2021-11-03 04:55:58,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:55:58,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:55:58,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 04:55:58,942 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-03 04:55:58,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 04:55:58,963 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-03 04:55:58,963 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-03 04:55:58,965 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:55:58,967 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:55:58,967 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:55:58,967 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:55:58,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 04:55:58,971 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-03 04:55:58,974 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 04:55:58,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 04:55:58 BoogieIcfgContainer [2021-11-03 04:55:58,985 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 04:55:58,986 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 04:55:58,986 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 04:55:58,986 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 04:55:58,987 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:55:58" (3/4) ... [2021-11-03 04:55:58,989 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-03 04:55:59,022 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99de435-8dee-4cc0-b8f5-ad9ca7e75b27/bin/utaipan-aC7eJsxGYH/witness.graphml [2021-11-03 04:55:59,023 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 04:55:59,026 INFO L168 Benchmark]: Toolchain (without parser) took 1107.26 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 66.3 MB in the beginning and 77.8 MB in the end (delta: -11.6 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. [2021-11-03 04:55:59,026 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 90.2 MB. Free memory is still 63.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:55:59,027 INFO L168 Benchmark]: CACSL2BoogieTranslator took 225.09 ms. Allocated memory is still 90.2 MB. Free memory was 66.1 MB in the beginning and 67.4 MB in the end (delta: -1.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 04:55:59,028 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.71 ms. Allocated memory is still 90.2 MB. Free memory was 67.4 MB in the beginning and 66.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:55:59,028 INFO L168 Benchmark]: Boogie Preprocessor took 14.80 ms. Allocated memory is still 90.2 MB. Free memory was 66.2 MB in the beginning and 65.3 MB in the end (delta: 870.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:55:59,029 INFO L168 Benchmark]: RCFGBuilder took 277.51 ms. Allocated memory is still 90.2 MB. Free memory was 65.2 MB in the beginning and 56.9 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 04:55:59,030 INFO L168 Benchmark]: TraceAbstraction took 522.86 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 56.4 MB in the beginning and 79.4 MB in the end (delta: -23.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:55:59,030 INFO L168 Benchmark]: Witness Printer took 37.81 ms. Allocated memory is still 109.1 MB. Free memory was 78.8 MB in the beginning and 77.8 MB in the end (delta: 967.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:55:59,034 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 90.2 MB. Free memory is still 63.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 225.09 ms. Allocated memory is still 90.2 MB. Free memory was 66.1 MB in the beginning and 67.4 MB in the end (delta: -1.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 22.71 ms. Allocated memory is still 90.2 MB. Free memory was 67.4 MB in the beginning and 66.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 14.80 ms. Allocated memory is still 90.2 MB. Free memory was 66.2 MB in the beginning and 65.3 MB in the end (delta: 870.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 277.51 ms. Allocated memory is still 90.2 MB. Free memory was 65.2 MB in the beginning and 56.9 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 522.86 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 56.4 MB in the beginning and 79.4 MB in the end (delta: -23.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 37.81 ms. Allocated memory is still 109.1 MB. Free memory was 78.8 MB in the beginning and 77.8 MB in the end (delta: 967.0 kB). 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, 0.0s 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: 27]: integer overflow possible integer overflow possible We found a FailurePath: [L23] int x, y; [L24] x = __VERIFIER_nondet_int() [L25] y = __VERIFIER_nondet_int() [L26] COND TRUE x < 0 [L27] x + y - UnprovableResult [Line: 27]: 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. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 3 SDtfs, 8 SDslu, 0 SDs, 0 SdLazy, 12 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 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! [2021-11-03 04:55:59,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99de435-8dee-4cc0-b8f5-ad9ca7e75b27/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)