./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/joey.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_09a06c92-a240-435d-b98f-a67987dbefe7/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a06c92-a240-435d-b98f-a67987dbefe7/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_09a06c92-a240-435d-b98f-a67987dbefe7/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a06c92-a240-435d-b98f-a67987dbefe7/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/joey.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a06c92-a240-435d-b98f-a67987dbefe7/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_09a06c92-a240-435d-b98f-a67987dbefe7/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 b8eecb1f582817a24edea1132ecb15ddc358f67da7ed612a076c099e943ee704 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:06:42,711 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:06:42,713 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:06:42,762 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:06:42,764 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:06:42,769 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:06:42,772 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:06:42,776 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:06:42,779 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:06:42,787 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:06:42,788 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:06:42,790 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:06:42,790 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:06:42,793 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:06:42,797 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:06:42,801 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:06:42,802 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:06:42,804 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:06:42,810 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:06:42,814 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:06:42,819 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:06:42,821 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:06:42,825 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:06:42,826 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:06:42,832 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:06:42,833 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:06:42,833 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:06:42,835 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:06:42,836 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:06:42,838 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:06:42,839 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:06:42,840 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:06:42,842 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:06:42,843 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:06:42,845 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:06:42,845 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:06:42,846 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:06:42,846 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:06:42,846 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:06:42,847 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:06:42,848 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:06:42,849 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a06c92-a240-435d-b98f-a67987dbefe7/bin/utaipan-aC7eJsxGYH/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-11-03 04:06:42,898 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:06:42,898 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:06:42,899 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:06:42,900 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:06:42,900 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:06:42,900 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:06:42,900 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:06:42,900 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:06:42,907 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:06:42,907 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:06:42,908 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:06:42,908 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:06:42,909 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:06:42,909 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:06:42,909 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:06:42,910 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:06:42,910 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-03 04:06:42,910 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:06:42,911 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:06:42,911 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:06:42,911 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:06:42,911 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:06:42,912 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-03 04:06:42,912 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:06:42,912 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:06:42,912 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:06:42,912 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:06:42,913 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:06:42,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:06:42,913 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:06:42,913 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:06:42,914 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:06:42,914 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:06:42,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:06:42,915 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:06:42,915 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:06:42,915 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:06:42,915 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_09a06c92-a240-435d-b98f-a67987dbefe7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a06c92-a240-435d-b98f-a67987dbefe7/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8eecb1f582817a24edea1132ecb15ddc358f67da7ed612a076c099e943ee704 [2021-11-03 04:06:43,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:06:43,223 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:06:43,226 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:06:43,228 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:06:43,228 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:06:43,229 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a06c92-a240-435d-b98f-a67987dbefe7/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/termination-crafted-lit/joey.c [2021-11-03 04:06:43,313 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a06c92-a240-435d-b98f-a67987dbefe7/bin/utaipan-aC7eJsxGYH/data/5423ac674/c05ab343214e4b64a3e5ecf1818f2393/FLAGd7043b2be [2021-11-03 04:06:43,726 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:06:43,726 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a06c92-a240-435d-b98f-a67987dbefe7/sv-benchmarks/c/termination-crafted-lit/joey.c [2021-11-03 04:06:43,732 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a06c92-a240-435d-b98f-a67987dbefe7/bin/utaipan-aC7eJsxGYH/data/5423ac674/c05ab343214e4b64a3e5ecf1818f2393/FLAGd7043b2be [2021-11-03 04:06:43,746 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a06c92-a240-435d-b98f-a67987dbefe7/bin/utaipan-aC7eJsxGYH/data/5423ac674/c05ab343214e4b64a3e5ecf1818f2393 [2021-11-03 04:06:43,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:06:43,750 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:06:43,752 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:06:43,752 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:06:43,755 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:06:43,756 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:06:43" (1/1) ... [2021-11-03 04:06:43,757 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dda0da7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:43, skipping insertion in model container [2021-11-03 04:06:43,757 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:06:43" (1/1) ... [2021-11-03 04:06:43,764 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:06:43,776 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:06:43,943 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:06:43,946 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:06:43,960 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:06:43,972 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:06:43,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:43 WrapperNode [2021-11-03 04:06:43,972 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:06:43,973 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:06:43,974 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:06:43,974 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:06:43,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:43" (1/1) ... [2021-11-03 04:06:43,986 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:43" (1/1) ... [2021-11-03 04:06:44,006 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:06:44,008 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:06:44,008 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:06:44,008 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:06:44,016 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:43" (1/1) ... [2021-11-03 04:06:44,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:43" (1/1) ... [2021-11-03 04:06:44,027 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:43" (1/1) ... [2021-11-03 04:06:44,028 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:43" (1/1) ... [2021-11-03 04:06:44,030 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:43" (1/1) ... [2021-11-03 04:06:44,032 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:43" (1/1) ... [2021-11-03 04:06:44,033 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:43" (1/1) ... [2021-11-03 04:06:44,034 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:06:44,035 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:06:44,035 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:06:44,035 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:06:44,039 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:43" (1/1) ... [2021-11-03 04:06:44,046 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:06:44,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a06c92-a240-435d-b98f-a67987dbefe7/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:06:44,076 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a06c92-a240-435d-b98f-a67987dbefe7/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:06:44,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a06c92-a240-435d-b98f-a67987dbefe7/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:06:44,125 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2021-11-03 04:06:44,125 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2021-11-03 04:06:44,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:06:44,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:06:44,378 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:06:44,378 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-03 04:06:44,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:06:44 BoogieIcfgContainer [2021-11-03 04:06:44,381 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:06:44,382 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:06:44,383 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:06:44,385 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:06:44,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:06:43" (1/3) ... [2021-11-03 04:06:44,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23ffae0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:06:44, skipping insertion in model container [2021-11-03 04:06:44,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:43" (2/3) ... [2021-11-03 04:06:44,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23ffae0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:06:44, skipping insertion in model container [2021-11-03 04:06:44,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:06:44" (3/3) ... [2021-11-03 04:06:44,389 INFO L111 eAbstractionObserver]: Analyzing ICFG joey.c [2021-11-03 04:06:44,394 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:06:44,394 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-11-03 04:06:44,441 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:06:44,447 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 04:06:44,447 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-11-03 04:06:44,464 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 17 states have (on average 1.588235294117647) internal successors, (27), 25 states have internal predecessors, (27), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-03 04:06:44,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-03 04:06:44,468 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:06:44,469 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-03 04:06:44,470 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-03 04:06:44,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:06:44,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1873828178, now seen corresponding path program 1 times [2021-11-03 04:06:44,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:06:44,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317428050] [2021-11-03 04:06:44,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:06:44,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:06:44,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:06:44,883 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 04:06:44,884 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:06:44,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317428050] [2021-11-03 04:06:44,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317428050] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:06:44,886 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:06:44,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 04:06:44,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413058489] [2021-11-03 04:06:44,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 04:06:44,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:06:44,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 04:06:44,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:06:44,925 INFO L87 Difference]: Start difference. First operand has 31 states, 17 states have (on average 1.588235294117647) internal successors, (27), 25 states have internal predecessors, (27), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 7 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:06:45,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:06:45,175 INFO L93 Difference]: Finished difference Result 64 states and 78 transitions. [2021-11-03 04:06:45,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 04:06:45,177 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-03 04:06:45,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:06:45,189 INFO L225 Difference]: With dead ends: 64 [2021-11-03 04:06:45,189 INFO L226 Difference]: Without dead ends: 52 [2021-11-03 04:06:45,194 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-03 04:06:45,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-11-03 04:06:45,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 45. [2021-11-03 04:06:45,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 29 states have (on average 1.5172413793103448) internal successors, (44), 37 states have internal predecessors, (44), 7 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-03 04:06:45,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2021-11-03 04:06:45,269 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 56 transitions. Word has length 6 [2021-11-03 04:06:45,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:06:45,270 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 56 transitions. [2021-11-03 04:06:45,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:06:45,270 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2021-11-03 04:06:45,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-03 04:06:45,271 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:06:45,272 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-03 04:06:45,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 04:06:45,273 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-03 04:06:45,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:06:45,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1873828402, now seen corresponding path program 1 times [2021-11-03 04:06:45,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:06:45,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472844151] [2021-11-03 04:06:45,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:06:45,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:06:45,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 04:06:45,302 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-03 04:06:45,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 04:06:45,341 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-03 04:06:45,341 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-03 04:06:45,344 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:06:45,346 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:06:45,348 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:06:45,348 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location recErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:06:45,348 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:06:45,348 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:06:45,349 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location recErr6ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:06:45,349 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location recErr7ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:06:45,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 04:06:45,353 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-03 04:06:45,358 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 04:06:45,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 04:06:45 BoogieIcfgContainer [2021-11-03 04:06:45,382 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 04:06:45,384 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 04:06:45,384 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 04:06:45,385 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 04:06:45,385 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:06:44" (3/4) ... [2021-11-03 04:06:45,388 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-03 04:06:45,441 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a06c92-a240-435d-b98f-a67987dbefe7/bin/utaipan-aC7eJsxGYH/witness.graphml [2021-11-03 04:06:45,442 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 04:06:45,443 INFO L168 Benchmark]: Toolchain (without parser) took 1692.25 ms. Allocated memory is still 132.1 MB. Free memory was 98.5 MB in the beginning and 66.3 MB in the end (delta: 32.2 MB). Peak memory consumption was 30.5 MB. Max. memory is 16.1 GB. [2021-11-03 04:06:45,444 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 83.9 MB. Free memory was 55.8 MB in the beginning and 55.8 MB in the end (delta: 29.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:06:45,445 INFO L168 Benchmark]: CACSL2BoogieTranslator took 220.96 ms. Allocated memory is still 132.1 MB. Free memory was 98.5 MB in the beginning and 109.9 MB in the end (delta: -11.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 04:06:45,445 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.85 ms. Allocated memory is still 132.1 MB. Free memory was 109.9 MB in the beginning and 108.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:06:45,446 INFO L168 Benchmark]: Boogie Preprocessor took 26.39 ms. Allocated memory is still 132.1 MB. Free memory was 108.7 MB in the beginning and 107.8 MB in the end (delta: 854.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:06:45,446 INFO L168 Benchmark]: RCFGBuilder took 345.82 ms. Allocated memory is still 132.1 MB. Free memory was 107.8 MB in the beginning and 97.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 04:06:45,448 INFO L168 Benchmark]: TraceAbstraction took 1000.07 ms. Allocated memory is still 132.1 MB. Free memory was 97.3 MB in the beginning and 68.0 MB in the end (delta: 29.3 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2021-11-03 04:06:45,449 INFO L168 Benchmark]: Witness Printer took 58.24 ms. Allocated memory is still 132.1 MB. Free memory was 68.0 MB in the beginning and 66.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:06:45,452 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 83.9 MB. Free memory was 55.8 MB in the beginning and 55.8 MB in the end (delta: 29.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 220.96 ms. Allocated memory is still 132.1 MB. Free memory was 98.5 MB in the beginning and 109.9 MB in the end (delta: -11.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.85 ms. Allocated memory is still 132.1 MB. Free memory was 109.9 MB in the beginning and 108.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.39 ms. Allocated memory is still 132.1 MB. Free memory was 108.7 MB in the beginning and 107.8 MB in the end (delta: 854.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 345.82 ms. Allocated memory is still 132.1 MB. Free memory was 107.8 MB in the beginning and 97.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1000.07 ms. Allocated memory is still 132.1 MB. Free memory was 97.3 MB in the beginning and 68.0 MB in the end (delta: 29.3 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * Witness Printer took 58.24 ms. Allocated memory is still 132.1 MB. Free memory was 68.0 MB in the beginning and 66.3 MB in the end (delta: 1.7 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: 15]: integer overflow possible integer overflow possible We found a FailurePath: [L20] int x = __VERIFIER_nondet_int(); [L21] int y; [L22] CALL rec(x) VAL [\old(x)=2147483647] [L10] COND FALSE !(x <= 0) VAL [\old(x)=2147483647, x=2147483647] [L12] COND FALSE !(x%2 == 0) VAL [\old(x)=2147483647, x=2147483647] [L15] ++x VAL [\old(x)=2147483647, x=2147483647] - UnprovableResult [Line: 13]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 13]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 15]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 15]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 15]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 15]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 15]: 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 2 procedures, 31 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 26 SDtfs, 50 SDslu, 66 SDs, 0 SdLazy, 62 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=1, InterpolantAutomatonStates: 7, 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, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 33 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 04:06:45,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a06c92-a240-435d-b98f-a67987dbefe7/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)