./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/array-memsafety/add_last-alloca-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_334d8b55-998d-4aac-a53d-2acb0f6eb145/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_334d8b55-998d-4aac-a53d-2acb0f6eb145/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_334d8b55-998d-4aac-a53d-2acb0f6eb145/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_334d8b55-998d-4aac-a53d-2acb0f6eb145/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-memsafety/add_last-alloca-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_334d8b55-998d-4aac-a53d-2acb0f6eb145/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_334d8b55-998d-4aac-a53d-2acb0f6eb145/bin/utaipan-gh47qXpMRh --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 32bit --witnessprinter.graph.data.programhash 870a7e5617be5a547f8d530603b5c27ad6cbb74bb05a83654285fee7bbb92753 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 08:35:15,750 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 08:35:15,751 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 08:35:15,770 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 08:35:15,770 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 08:35:15,771 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 08:35:15,772 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 08:35:15,774 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 08:35:15,775 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 08:35:15,776 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 08:35:15,777 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 08:35:15,778 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 08:35:15,779 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 08:35:15,780 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 08:35:15,781 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 08:35:15,782 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 08:35:15,782 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 08:35:15,783 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 08:35:15,785 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 08:35:15,786 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 08:35:15,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 08:35:15,789 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 08:35:15,790 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 08:35:15,791 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 08:35:15,794 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 08:35:15,795 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 08:35:15,795 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 08:35:15,796 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 08:35:15,796 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 08:35:15,797 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 08:35:15,797 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 08:35:15,798 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 08:35:15,798 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 08:35:15,799 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 08:35:15,800 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 08:35:15,800 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 08:35:15,801 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 08:35:15,801 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 08:35:15,801 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 08:35:15,801 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 08:35:15,802 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 08:35:15,802 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_334d8b55-998d-4aac-a53d-2acb0f6eb145/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-12-14 08:35:15,824 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 08:35:15,824 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 08:35:15,824 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 08:35:15,829 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 08:35:15,829 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 08:35:15,830 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 08:35:15,830 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 08:35:15,830 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 08:35:15,830 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 08:35:15,830 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 08:35:15,830 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 08:35:15,831 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 08:35:15,831 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 08:35:15,831 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 08:35:15,831 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 08:35:15,832 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 08:35:15,832 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 08:35:15,832 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 08:35:15,833 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 08:35:15,833 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 08:35:15,833 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 08:35:15,833 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 08:35:15,833 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 08:35:15,834 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 08:35:15,834 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 08:35:15,834 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 08:35:15,834 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 08:35:15,834 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 08:35:15,834 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 08:35:15,835 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 08:35:15,835 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 08:35:15,835 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 08:35:15,835 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 08:35:15,835 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 08:35:15,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:35:15,836 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 08:35:15,836 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 08:35:15,836 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 08:35:15,836 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 08:35:15,837 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 08:35:15,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 08:35:15,837 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 08:35:15,837 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 08:35:15,837 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_334d8b55-998d-4aac-a53d-2acb0f6eb145/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_334d8b55-998d-4aac-a53d-2acb0f6eb145/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 870a7e5617be5a547f8d530603b5c27ad6cbb74bb05a83654285fee7bbb92753 [2022-12-14 08:35:16,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 08:35:16,055 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 08:35:16,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 08:35:16,057 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 08:35:16,058 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 08:35:16,058 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_334d8b55-998d-4aac-a53d-2acb0f6eb145/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/array-memsafety/add_last-alloca-1.i [2022-12-14 08:35:18,668 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 08:35:18,848 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 08:35:18,849 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_334d8b55-998d-4aac-a53d-2acb0f6eb145/sv-benchmarks/c/array-memsafety/add_last-alloca-1.i [2022-12-14 08:35:18,856 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_334d8b55-998d-4aac-a53d-2acb0f6eb145/bin/utaipan-gh47qXpMRh/data/e3fa38f7f/2bacb5b04e524392b5c13ba8d374a3d3/FLAG6e9fa676c [2022-12-14 08:35:18,866 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_334d8b55-998d-4aac-a53d-2acb0f6eb145/bin/utaipan-gh47qXpMRh/data/e3fa38f7f/2bacb5b04e524392b5c13ba8d374a3d3 [2022-12-14 08:35:18,868 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 08:35:18,869 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 08:35:18,870 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 08:35:18,870 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 08:35:18,873 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 08:35:18,873 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:35:18" (1/1) ... [2022-12-14 08:35:18,874 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5920001e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:35:18, skipping insertion in model container [2022-12-14 08:35:18,874 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:35:18" (1/1) ... [2022-12-14 08:35:18,879 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 08:35:18,903 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 08:35:19,078 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:35:19,084 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 08:35:19,108 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:35:19,124 INFO L208 MainTranslator]: Completed translation [2022-12-14 08:35:19,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:35:19 WrapperNode [2022-12-14 08:35:19,125 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 08:35:19,125 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 08:35:19,125 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 08:35:19,125 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 08:35:19,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:35:19" (1/1) ... [2022-12-14 08:35:19,139 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:35:19" (1/1) ... [2022-12-14 08:35:19,157 INFO L138 Inliner]: procedures = 115, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 59 [2022-12-14 08:35:19,158 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 08:35:19,158 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 08:35:19,158 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 08:35:19,159 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 08:35:19,167 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:35:19" (1/1) ... [2022-12-14 08:35:19,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:35:19" (1/1) ... [2022-12-14 08:35:19,170 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:35:19" (1/1) ... [2022-12-14 08:35:19,170 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:35:19" (1/1) ... [2022-12-14 08:35:19,174 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:35:19" (1/1) ... [2022-12-14 08:35:19,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:35:19" (1/1) ... [2022-12-14 08:35:19,179 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:35:19" (1/1) ... [2022-12-14 08:35:19,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:35:19" (1/1) ... [2022-12-14 08:35:19,181 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 08:35:19,182 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 08:35:19,182 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 08:35:19,182 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 08:35:19,183 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:35:19" (1/1) ... [2022-12-14 08:35:19,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:35:19,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_334d8b55-998d-4aac-a53d-2acb0f6eb145/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:35:19,211 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_334d8b55-998d-4aac-a53d-2acb0f6eb145/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 08:35:19,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_334d8b55-998d-4aac-a53d-2acb0f6eb145/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 08:35:19,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 08:35:19,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 08:35:19,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 08:35:19,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 08:35:19,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 08:35:19,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 08:35:19,329 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 08:35:19,331 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 08:35:19,416 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 08:35:19,448 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 08:35:19,448 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 08:35:19,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:35:19 BoogieIcfgContainer [2022-12-14 08:35:19,450 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 08:35:19,451 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 08:35:19,452 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 08:35:19,454 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 08:35:19,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 08:35:18" (1/3) ... [2022-12-14 08:35:19,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66d94b6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:35:19, skipping insertion in model container [2022-12-14 08:35:19,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:35:19" (2/3) ... [2022-12-14 08:35:19,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66d94b6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:35:19, skipping insertion in model container [2022-12-14 08:35:19,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:35:19" (3/3) ... [2022-12-14 08:35:19,456 INFO L112 eAbstractionObserver]: Analyzing ICFG add_last-alloca-1.i [2022-12-14 08:35:19,471 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 08:35:19,471 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-12-14 08:35:19,505 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 08:35:19,510 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@43f6e471, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 08:35:19,510 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-14 08:35:19,515 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 15 states have internal predecessors, (19), 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) [2022-12-14 08:35:19,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 08:35:19,519 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:35:19,520 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 08:35:19,520 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-14 08:35:19,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:35:19,524 INFO L85 PathProgramCache]: Analyzing trace with hash 2636730, now seen corresponding path program 1 times [2022-12-14 08:35:19,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:35:19,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710703330] [2022-12-14 08:35:19,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:35:19,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:35:19,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:35:19,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:35:19,702 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:35:19,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710703330] [2022-12-14 08:35:19,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710703330] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:35:19,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:35:19,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:35:19,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105666113] [2022-12-14 08:35:19,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:35:19,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:35:19,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:35:19,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:35:19,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:35:19,743 INFO L87 Difference]: Start difference. First operand has 16 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 15 states have internal predecessors, (19), 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 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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) [2022-12-14 08:35:19,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:35:19,802 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2022-12-14 08:35:19,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 08:35:19,804 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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 4 [2022-12-14 08:35:19,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:35:19,810 INFO L225 Difference]: With dead ends: 33 [2022-12-14 08:35:19,811 INFO L226 Difference]: Without dead ends: 22 [2022-12-14 08:35:19,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:35:19,816 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 13 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:35:19,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 34 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:35:19,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-12-14 08:35:19,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 16. [2022-12-14 08:35:19,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.5) internal successors, (18), 15 states have internal predecessors, (18), 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) [2022-12-14 08:35:19,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2022-12-14 08:35:19,843 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 4 [2022-12-14 08:35:19,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:35:19,844 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2022-12-14 08:35:19,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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) [2022-12-14 08:35:19,844 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2022-12-14 08:35:19,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 08:35:19,844 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:35:19,844 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 08:35:19,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 08:35:19,845 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-14 08:35:19,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:35:19,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1760909920, now seen corresponding path program 1 times [2022-12-14 08:35:19,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:35:19,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988658251] [2022-12-14 08:35:19,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:35:19,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:35:19,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:35:19,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:35:19,957 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:35:19,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988658251] [2022-12-14 08:35:19,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988658251] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:35:19,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:35:19,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:35:19,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36570668] [2022-12-14 08:35:19,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:35:19,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:35:19,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:35:19,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:35:19,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:35:19,960 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-12-14 08:35:19,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:35:19,976 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2022-12-14 08:35:19,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 08:35:19,977 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2022-12-14 08:35:19,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:35:19,977 INFO L225 Difference]: With dead ends: 22 [2022-12-14 08:35:19,977 INFO L226 Difference]: Without dead ends: 16 [2022-12-14 08:35:19,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:35:19,979 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 17 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:35:19,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 16 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:35:19,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-12-14 08:35:19,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-12-14 08:35:19,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 15 states have internal predecessors, (17), 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) [2022-12-14 08:35:19,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2022-12-14 08:35:19,982 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 6 [2022-12-14 08:35:19,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:35:19,982 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2022-12-14 08:35:19,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-12-14 08:35:19,983 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2022-12-14 08:35:19,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 08:35:19,983 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:35:19,983 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2022-12-14 08:35:19,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 08:35:19,984 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-14 08:35:19,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:35:19,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1241470469, now seen corresponding path program 1 times [2022-12-14 08:35:19,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:35:19,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307698837] [2022-12-14 08:35:19,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:35:19,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:35:19,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:35:20,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:35:20,063 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:35:20,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307698837] [2022-12-14 08:35:20,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307698837] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:35:20,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484002216] [2022-12-14 08:35:20,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:35:20,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:35:20,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_334d8b55-998d-4aac-a53d-2acb0f6eb145/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:35:20,066 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_334d8b55-998d-4aac-a53d-2acb0f6eb145/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:35:20,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_334d8b55-998d-4aac-a53d-2acb0f6eb145/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 08:35:20,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:35:20,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 08:35:20,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:35:20,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:35:20,169 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:35:20,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484002216] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:35:20,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 08:35:20,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-12-14 08:35:20,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516298660] [2022-12-14 08:35:20,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:35:20,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 08:35:20,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:35:20,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 08:35:20,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-14 08:35:20,172 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 6 states, 5 states have (on average 1.4) 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) [2022-12-14 08:35:20,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:35:20,204 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2022-12-14 08:35:20,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 08:35:20,204 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) 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) Word has length 7 [2022-12-14 08:35:20,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:35:20,205 INFO L225 Difference]: With dead ends: 16 [2022-12-14 08:35:20,205 INFO L226 Difference]: Without dead ends: 15 [2022-12-14 08:35:20,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-12-14 08:35:20,206 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 22 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:35:20,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 21 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:35:20,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-12-14 08:35:20,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-12-14 08:35:20,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 14 states have internal predecessors, (16), 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) [2022-12-14 08:35:20,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2022-12-14 08:35:20,209 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 7 [2022-12-14 08:35:20,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:35:20,210 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2022-12-14 08:35:20,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) 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) [2022-12-14 08:35:20,210 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2022-12-14 08:35:20,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 08:35:20,210 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:35:20,210 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2022-12-14 08:35:20,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_334d8b55-998d-4aac-a53d-2acb0f6eb145/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 08:35:20,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_334d8b55-998d-4aac-a53d-2acb0f6eb145/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:35:20,412 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-14 08:35:20,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:35:20,414 INFO L85 PathProgramCache]: Analyzing trace with hash -169121067, now seen corresponding path program 1 times [2022-12-14 08:35:20,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:35:20,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950177613] [2022-12-14 08:35:20,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:35:20,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:35:20,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:35:20,581 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:35:20,581 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:35:20,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950177613] [2022-12-14 08:35:20,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950177613] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:35:20,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735033157] [2022-12-14 08:35:20,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:35:20,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:35:20,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_334d8b55-998d-4aac-a53d-2acb0f6eb145/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:35:20,583 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_334d8b55-998d-4aac-a53d-2acb0f6eb145/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:35:20,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_334d8b55-998d-4aac-a53d-2acb0f6eb145/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 08:35:20,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:35:20,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 08:35:20,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:35:20,651 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:35:20,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:35:20,687 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:35:20,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735033157] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:35:20,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [603486523] [2022-12-14 08:35:20,706 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-12-14 08:35:20,706 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:35:20,710 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:35:20,714 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:35:20,715 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:35:20,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2022-12-14 08:35:20,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2022-12-14 08:35:20,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-14 08:35:20,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-14 08:35:20,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-14 08:35:20,952 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:35:21,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [603486523] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:35:21,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:35:21,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5, 5] total 14 [2022-12-14 08:35:21,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170430065] [2022-12-14 08:35:21,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:35:21,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 08:35:21,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:35:21,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 08:35:21,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-12-14 08:35:21,170 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2022-12-14 08:35:21,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:35:21,384 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2022-12-14 08:35:21,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 08:35:21,385 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 8 [2022-12-14 08:35:21,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:35:21,385 INFO L225 Difference]: With dead ends: 21 [2022-12-14 08:35:21,385 INFO L226 Difference]: Without dead ends: 20 [2022-12-14 08:35:21,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2022-12-14 08:35:21,386 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 23 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:35:21,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 9 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:35:21,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-12-14 08:35:21,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 12. [2022-12-14 08:35:21,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 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) [2022-12-14 08:35:21,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2022-12-14 08:35:21,389 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 8 [2022-12-14 08:35:21,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:35:21,390 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2022-12-14 08:35:21,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2022-12-14 08:35:21,390 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2022-12-14 08:35:21,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 08:35:21,390 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:35:21,390 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:35:21,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_334d8b55-998d-4aac-a53d-2acb0f6eb145/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 08:35:21,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_334d8b55-998d-4aac-a53d-2acb0f6eb145/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:35:21,591 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-14 08:35:21,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:35:21,592 INFO L85 PathProgramCache]: Analyzing trace with hash -947627733, now seen corresponding path program 1 times [2022-12-14 08:35:21,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:35:21,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423177398] [2022-12-14 08:35:21,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:35:21,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:35:21,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:35:22,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:35:22,052 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:35:22,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423177398] [2022-12-14 08:35:22,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423177398] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:35:22,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116212315] [2022-12-14 08:35:22,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:35:22,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:35:22,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_334d8b55-998d-4aac-a53d-2acb0f6eb145/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:35:22,054 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_334d8b55-998d-4aac-a53d-2acb0f6eb145/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:35:22,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_334d8b55-998d-4aac-a53d-2acb0f6eb145/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 08:35:22,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:35:22,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-14 08:35:22,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:35:22,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 08:35:22,225 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:35:22,227 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 08:35:22,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 10 [2022-12-14 08:35:22,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:35:22,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:35:22,324 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 08:35:22,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 70 [2022-12-14 08:35:22,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-12-14 08:35:22,356 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 08:35:22,357 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 82 [2022-12-14 08:35:22,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:35:22,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116212315] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:35:22,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [235058536] [2022-12-14 08:35:22,412 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 08:35:22,412 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:35:22,412 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:35:22,412 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:35:22,412 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:35:22,435 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2022-12-14 08:35:22,442 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2022-12-14 08:35:22,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-14 08:35:22,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-14 08:35:22,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-14 08:35:22,540 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:35:23,114 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '367#(and (<= |ULTIMATE.start_main_~length~0#1| 2147483647) (not (< |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~length~0#1|)) (= (select (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|) |ULTIMATE.start_main_~a~0#1.offset|) |ULTIMATE.start_main_#t~mem8#1|) (<= 0 |ULTIMATE.start_main_#t~malloc3#1.base|) (<= 0 |ULTIMATE.start_main_~a~0#1.offset|) (<= |ULTIMATE.start_main_~arr~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~a~0#1.base|) (= |ULTIMATE.start_main_#t~malloc3#1.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~arr~0#1.base|) (+ |ULTIMATE.start_main_~arr~0#1.offset| (- 4) (* |ULTIMATE.start_main_~length~0#1| 4))) |ULTIMATE.start_main_#t~mem9#1|) (<= 1 |ULTIMATE.start_main_~length~0#1|) (<= 0 |ULTIMATE.start_main_~arr~0#1.base|) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|) |ULTIMATE.start_main_~a~0#1.offset|) (select (select |#memory_int| |ULTIMATE.start_main_~arr~0#1.base|) (+ |ULTIMATE.start_main_~arr~0#1.offset| (- 4) (* |ULTIMATE.start_main_~length~0#1| 4))))) (= |#NULL.offset| 0) (not (<= 0 (+ |ULTIMATE.start_main_#t~mem9#1| |ULTIMATE.start_main_#t~mem8#1| 2147483648))) (<= 0 |ULTIMATE.start_main_~arr~0#1.offset|) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |#NULL.base| 0))' at error location [2022-12-14 08:35:23,115 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 08:35:23,115 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:35:23,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2022-12-14 08:35:23,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561006868] [2022-12-14 08:35:23,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 08:35:23,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-14 08:35:23,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:35:23,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-14 08:35:23,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2022-12-14 08:35:23,117 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 18 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 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) [2022-12-14 08:35:23,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:35:23,286 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2022-12-14 08:35:23,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 08:35:23,286 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 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 9 [2022-12-14 08:35:23,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:35:23,287 INFO L225 Difference]: With dead ends: 25 [2022-12-14 08:35:23,287 INFO L226 Difference]: Without dead ends: 17 [2022-12-14 08:35:23,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=153, Invalid=659, Unknown=0, NotChecked=0, Total=812 [2022-12-14 08:35:23,288 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 29 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:35:23,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 36 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:35:23,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-12-14 08:35:23,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-12-14 08:35:23,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 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) [2022-12-14 08:35:23,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2022-12-14 08:35:23,293 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 9 [2022-12-14 08:35:23,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:35:23,293 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2022-12-14 08:35:23,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 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) [2022-12-14 08:35:23,294 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2022-12-14 08:35:23,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 08:35:23,294 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:35:23,294 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-14 08:35:23,299 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_334d8b55-998d-4aac-a53d-2acb0f6eb145/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 08:35:23,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_334d8b55-998d-4aac-a53d-2acb0f6eb145/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:35:23,495 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-14 08:35:23,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:35:23,496 INFO L85 PathProgramCache]: Analyzing trace with hash -368511552, now seen corresponding path program 2 times [2022-12-14 08:35:23,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:35:23,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012210398] [2022-12-14 08:35:23,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:35:23,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:35:23,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 08:35:23,513 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 08:35:23,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 08:35:23,536 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 08:35:23,536 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 08:35:23,538 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2022-12-14 08:35:23,540 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2022-12-14 08:35:23,540 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2022-12-14 08:35:23,540 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2022-12-14 08:35:23,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 08:35:23,544 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2022-12-14 08:35:23,547 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 08:35:23,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 08:35:23 BoogieIcfgContainer [2022-12-14 08:35:23,568 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 08:35:23,568 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 08:35:23,568 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 08:35:23,568 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 08:35:23,569 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:35:19" (3/4) ... [2022-12-14 08:35:23,570 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-14 08:35:23,603 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_334d8b55-998d-4aac-a53d-2acb0f6eb145/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 08:35:23,603 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 08:35:23,604 INFO L158 Benchmark]: Toolchain (without parser) took 4734.43ms. Allocated memory was 136.3MB in the beginning and 163.6MB in the end (delta: 27.3MB). Free memory was 101.1MB in the beginning and 121.9MB in the end (delta: -20.7MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. [2022-12-14 08:35:23,604 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 136.3MB. Free memory was 106.4MB in the beginning and 106.3MB in the end (delta: 142.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 08:35:23,604 INFO L158 Benchmark]: CACSL2BoogieTranslator took 254.59ms. Allocated memory is still 136.3MB. Free memory was 101.1MB in the beginning and 85.2MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-14 08:35:23,605 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.54ms. Allocated memory is still 136.3MB. Free memory was 85.2MB in the beginning and 83.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 08:35:23,605 INFO L158 Benchmark]: Boogie Preprocessor took 23.07ms. Allocated memory is still 136.3MB. Free memory was 83.5MB in the beginning and 82.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 08:35:23,605 INFO L158 Benchmark]: RCFGBuilder took 267.75ms. Allocated memory is still 136.3MB. Free memory was 82.2MB in the beginning and 69.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 08:35:23,606 INFO L158 Benchmark]: TraceAbstraction took 4116.14ms. Allocated memory was 136.3MB in the beginning and 163.6MB in the end (delta: 27.3MB). Free memory was 68.8MB in the beginning and 123.9MB in the end (delta: -55.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 08:35:23,606 INFO L158 Benchmark]: Witness Printer took 35.24ms. Allocated memory is still 163.6MB. Free memory was 123.9MB in the beginning and 121.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 08:35:23,608 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 136.3MB. Free memory was 106.4MB in the beginning and 106.3MB in the end (delta: 142.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 254.59ms. Allocated memory is still 136.3MB. Free memory was 101.1MB in the beginning and 85.2MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.54ms. Allocated memory is still 136.3MB. Free memory was 85.2MB in the beginning and 83.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.07ms. Allocated memory is still 136.3MB. Free memory was 83.5MB in the beginning and 82.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 267.75ms. Allocated memory is still 136.3MB. Free memory was 82.2MB in the beginning and 69.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 4116.14ms. Allocated memory was 136.3MB in the beginning and 163.6MB in the end (delta: 27.3MB). Free memory was 68.8MB in the beginning and 123.9MB in the end (delta: -55.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 35.24ms. Allocated memory is still 163.6MB. Free memory was 123.9MB in the beginning and 121.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * 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: 526]: integer overflow possible integer overflow possible We found a FailurePath: [L513] int i, j; [L514] int length = __VERIFIER_nondet_int(); [L515] COND FALSE !(length < 1 || length >= 2147483647 / sizeof(int)) [L516] int *arr = __builtin_alloca (length*sizeof(int)); VAL [__builtin_alloca (length*sizeof(int))={2:0}, arr={2:0}, length=2] [L517] COND FALSE !(!arr) [L518] int *a = arr; [L520] int k = 0; VAL [__builtin_alloca (length*sizeof(int))={2:0}, a={2:0}, arr={2:0}, k=0, length=2] [L520] COND TRUE k < length [L522] arr[k] = __VERIFIER_nondet_int() [L520] k++ VAL [__builtin_alloca (length*sizeof(int))={2:0}, a={2:0}, arr={2:0}, k=1, length=2] [L520] COND TRUE k < length [L522] arr[k] = __VERIFIER_nondet_int() [L520] k++ VAL [__builtin_alloca (length*sizeof(int))={2:0}, a={2:0}, arr={2:0}, k=2, length=2] [L520] COND FALSE !(k < length) VAL [__builtin_alloca (length*sizeof(int))={2:0}, a={2:0}, arr={2:0}, k=2, length=2] [L525] EXPR \read(*a) [L525] EXPR arr + length - 1 VAL [\read(*a)=-2147483647, __builtin_alloca (length*sizeof(int))={2:0}, a={2:0}, arr={2:0}, arr + length - 1=-2, k=2, length=2] [L525] COND TRUE *a != *(arr + length - 1) [L526] EXPR \read(*a) [L526] EXPR arr + length - 1 VAL [\read(*a)=-2147483647, __builtin_alloca (length*sizeof(int))={2:0}, a={2:0}, arr={2:0}, arr + length - 1=-2, k=2, length=2] [L526] *a += *(arr + length - 1) VAL [\read(*a)=-2147483647, __builtin_alloca (length*sizeof(int))={2:0}, a={2:0}, arr={2:0}, arr + length - 1=-2, k=2, length=2] - UnprovableResult [Line: 520]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 520]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 526]: 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, 16 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 4.0s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 104 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 104 mSDsluCounter, 116 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 81 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 161 IncrementalHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 35 mSDtfsCounter, 161 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 26 SyntacticMatches, 4 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 28, 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, 5 MinimizatonAttempts, 16 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 70 NumberOfCodeBlocks, 70 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 65 ConstructedInterpolants, 0 QuantifiedInterpolants, 586 SizeOfPredicates, 15 NumberOfNonLiveVariables, 176 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 10 InterpolantComputations, 3 PerfectInterpolantSequences, 2/16 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: OVERALL_TIME: 0.2s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 5, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 11, TOOLS_POST_TIME: 0.2s, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME: 0.0s, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 11, TOOLS_QUANTIFIERELIM_TIME: 0.2s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.1s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 23, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 0, DOMAIN_JOIN_TIME: 0.0s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 1, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 2, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 5, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME: 0.1s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.1s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 2, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 35, DAG_COMPRESSION_RETAINED_NODES: 20, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-12-14 08:35:23,622 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_334d8b55-998d-4aac-a53d-2acb0f6eb145/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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)