./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_22_good.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f86bfb4-7767-46ca-80a9-69ed31a22852/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f86bfb4-7767-46ca-80a9-69ed31a22852/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f86bfb4-7767-46ca-80a9-69ed31a22852/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f86bfb4-7767-46ca-80a9-69ed31a22852/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_22_good.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f86bfb4-7767-46ca-80a9-69ed31a22852/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f86bfb4-7767-46ca-80a9-69ed31a22852/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 709e403a8a132b9f269e58f6098236a6dcc8a76eebff61b0f6fd392cf5df68e3 --- 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-38b53e6 [2022-11-25 22:22:51,845 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 22:22:51,847 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 22:22:51,870 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 22:22:51,871 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 22:22:51,872 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 22:22:51,873 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 22:22:51,875 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 22:22:51,877 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 22:22:51,878 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 22:22:51,879 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 22:22:51,881 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 22:22:51,881 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 22:22:51,882 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 22:22:51,884 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 22:22:51,885 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 22:22:51,886 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 22:22:51,888 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 22:22:51,890 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 22:22:51,892 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 22:22:51,894 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 22:22:51,896 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 22:22:51,897 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 22:22:51,898 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 22:22:51,902 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 22:22:51,903 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 22:22:51,903 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 22:22:51,904 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 22:22:51,905 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 22:22:51,906 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 22:22:51,907 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 22:22:51,908 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 22:22:51,909 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 22:22:51,910 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 22:22:51,911 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 22:22:51,912 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 22:22:51,913 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 22:22:51,913 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 22:22:51,914 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 22:22:51,915 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 22:22:51,916 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 22:22:51,917 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f86bfb4-7767-46ca-80a9-69ed31a22852/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-25 22:22:51,943 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 22:22:51,944 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 22:22:51,944 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 22:22:51,944 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 22:22:51,945 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 22:22:51,946 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 22:22:51,946 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 22:22:51,947 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 22:22:51,947 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 22:22:51,947 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 22:22:51,948 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 22:22:51,948 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 22:22:51,948 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 22:22:51,949 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 22:22:51,949 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 22:22:51,950 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 22:22:51,950 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 22:22:51,950 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 22:22:51,951 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 22:22:51,952 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 22:22:51,952 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 22:22:51,952 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 22:22:51,953 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 22:22:51,953 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 22:22:51,953 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 22:22:51,954 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 22:22:51,954 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 22:22:51,954 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 22:22:51,955 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 22:22:51,955 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 22:22:51,956 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 22:22:51,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:22:51,956 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 22:22:51,957 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 22:22:51,957 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 22:22:51,957 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 22:22:51,958 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 22:22:51,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 22:22:51,958 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 22:22:51,959 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 22:22:51,959 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_6f86bfb4-7767-46ca-80a9-69ed31a22852/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f86bfb4-7767-46ca-80a9-69ed31a22852/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 709e403a8a132b9f269e58f6098236a6dcc8a76eebff61b0f6fd392cf5df68e3 [2022-11-25 22:22:52,264 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 22:22:52,302 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 22:22:52,305 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 22:22:52,306 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 22:22:52,307 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 22:22:52,308 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f86bfb4-7767-46ca-80a9-69ed31a22852/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_22_good.i [2022-11-25 22:22:55,415 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 22:22:55,827 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 22:22:55,835 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f86bfb4-7767-46ca-80a9-69ed31a22852/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_22_good.i [2022-11-25 22:22:55,868 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f86bfb4-7767-46ca-80a9-69ed31a22852/bin/utaipan-ByfvJB40ur/data/c21f27abf/179f8ad6f2d348a8b275c538737c13a0/FLAGf3c30561c [2022-11-25 22:22:55,884 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f86bfb4-7767-46ca-80a9-69ed31a22852/bin/utaipan-ByfvJB40ur/data/c21f27abf/179f8ad6f2d348a8b275c538737c13a0 [2022-11-25 22:22:55,887 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 22:22:55,889 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 22:22:55,894 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 22:22:55,894 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 22:22:55,899 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 22:22:55,900 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:22:55" (1/1) ... [2022-11-25 22:22:55,901 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@278f8ca3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:22:55, skipping insertion in model container [2022-11-25 22:22:55,902 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:22:55" (1/1) ... [2022-11-25 22:22:55,911 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 22:22:55,997 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 22:22:56,442 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 22:22:56,938 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:22:56,945 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 22:22:56,947 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 22:22:56,949 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 22:22:56,950 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 22:22:56,979 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 22:22:56,985 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 22:22:56,993 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 22:22:57,001 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:22:57,014 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 22:22:57,039 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 22:22:57,098 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:22:57,100 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 22:22:57,101 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 22:22:57,104 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 22:22:57,105 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 22:22:57,110 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 22:22:57,113 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 22:22:57,115 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 22:22:57,119 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:22:57,304 INFO L208 MainTranslator]: Completed translation [2022-11-25 22:22:57,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:22:57 WrapperNode [2022-11-25 22:22:57,305 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 22:22:57,307 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 22:22:57,310 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 22:22:57,310 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 22:22:57,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:22:57" (1/1) ... [2022-11-25 22:22:57,356 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:22:57" (1/1) ... [2022-11-25 22:22:57,382 INFO L138 Inliner]: procedures = 506, calls = 84, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 113 [2022-11-25 22:22:57,382 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 22:22:57,383 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 22:22:57,383 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 22:22:57,383 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 22:22:57,405 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:22:57" (1/1) ... [2022-11-25 22:22:57,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:22:57" (1/1) ... [2022-11-25 22:22:57,409 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:22:57" (1/1) ... [2022-11-25 22:22:57,415 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:22:57" (1/1) ... [2022-11-25 22:22:57,422 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:22:57" (1/1) ... [2022-11-25 22:22:57,440 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:22:57" (1/1) ... [2022-11-25 22:22:57,442 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:22:57" (1/1) ... [2022-11-25 22:22:57,443 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:22:57" (1/1) ... [2022-11-25 22:22:57,446 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 22:22:57,447 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 22:22:57,447 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 22:22:57,447 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 22:22:57,448 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:22:57" (1/1) ... [2022-11-25 22:22:57,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:22:57,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f86bfb4-7767-46ca-80a9-69ed31a22852/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:22:57,488 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f86bfb4-7767-46ca-80a9-69ed31a22852/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 22:22:57,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f86bfb4-7767-46ca-80a9-69ed31a22852/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 22:22:57,522 INFO L130 BoogieDeclarations]: Found specification of procedure printIntLine [2022-11-25 22:22:57,523 INFO L138 BoogieDeclarations]: Found implementation of procedure printIntLine [2022-11-25 22:22:57,523 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-25 22:22:57,523 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-25 22:22:57,523 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-25 22:22:57,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 22:22:57,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-25 22:22:57,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 22:22:57,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 22:22:57,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 22:22:57,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 22:22:57,524 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-25 22:22:57,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 22:22:57,738 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 22:22:57,742 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 22:22:57,972 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 22:22:58,036 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 22:22:58,047 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 22:22:58,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:22:58 BoogieIcfgContainer [2022-11-25 22:22:58,050 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 22:22:58,053 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 22:22:58,054 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 22:22:58,058 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 22:22:58,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 10:22:55" (1/3) ... [2022-11-25 22:22:58,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f923521 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:22:58, skipping insertion in model container [2022-11-25 22:22:58,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:22:57" (2/3) ... [2022-11-25 22:22:58,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f923521 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:22:58, skipping insertion in model container [2022-11-25 22:22:58,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:22:58" (3/3) ... [2022-11-25 22:22:58,066 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_22_good.i [2022-11-25 22:22:58,096 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 22:22:58,097 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-25 22:22:58,170 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 22:22:58,179 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;@84a4296, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 22:22:58,180 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-25 22:22:58,185 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 23 states have (on average 1.565217391304348) internal successors, (36), 36 states have internal predecessors, (36), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 7 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-25 22:22:58,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-25 22:22:58,193 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:22:58,194 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:22:58,194 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-25 22:22:58,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:22:58,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1618437867, now seen corresponding path program 1 times [2022-11-25 22:22:58,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:22:58,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504328532] [2022-11-25 22:22:58,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:22:58,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:22:58,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:22:58,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:22:58,491 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:22:58,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504328532] [2022-11-25 22:22:58,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504328532] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:22:58,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:22:58,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 22:22:58,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569790338] [2022-11-25 22:22:58,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:22:58,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:22:58,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:22:58,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:22:58,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:22:58,535 INFO L87 Difference]: Start difference. First operand has 42 states, 23 states have (on average 1.565217391304348) internal successors, (36), 36 states have internal predecessors, (36), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 7 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 22:22:58,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:22:58,592 INFO L93 Difference]: Finished difference Result 42 states and 56 transitions. [2022-11-25 22:22:58,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:22:58,600 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2022-11-25 22:22:58,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:22:58,609 INFO L225 Difference]: With dead ends: 42 [2022-11-25 22:22:58,610 INFO L226 Difference]: Without dead ends: 36 [2022-11-25 22:22:58,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:22:58,617 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 2 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:22:58,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 87 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 22:22:58,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-25 22:22:58,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-11-25 22:22:58,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 31 states have internal predecessors, (31), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 5 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-25 22:22:58,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 47 transitions. [2022-11-25 22:22:58,662 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 47 transitions. Word has length 10 [2022-11-25 22:22:58,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:22:58,664 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 47 transitions. [2022-11-25 22:22:58,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 22:22:58,664 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 47 transitions. [2022-11-25 22:22:58,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-25 22:22:58,666 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:22:58,666 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:22:58,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 22:22:58,667 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-25 22:22:58,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:22:58,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1368033740, now seen corresponding path program 1 times [2022-11-25 22:22:58,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:22:58,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67506235] [2022-11-25 22:22:58,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:22:58,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:22:58,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:22:58,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:22:58,950 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:22:58,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67506235] [2022-11-25 22:22:58,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67506235] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:22:58,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:22:58,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:22:58,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452817377] [2022-11-25 22:22:58,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:22:58,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 22:22:58,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:22:58,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 22:22:58,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:22:58,956 INFO L87 Difference]: Start difference. First operand 36 states and 47 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 22:22:59,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:22:59,032 INFO L93 Difference]: Finished difference Result 36 states and 47 transitions. [2022-11-25 22:22:59,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 22:22:59,033 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-11-25 22:22:59,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:22:59,034 INFO L225 Difference]: With dead ends: 36 [2022-11-25 22:22:59,034 INFO L226 Difference]: Without dead ends: 35 [2022-11-25 22:22:59,035 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 [2022-11-25 22:22:59,036 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 44 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:22:59,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 58 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:22:59,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-25 22:22:59,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-11-25 22:22:59,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 30 states have internal predecessors, (30), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 5 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-25 22:22:59,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 46 transitions. [2022-11-25 22:22:59,046 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 46 transitions. Word has length 11 [2022-11-25 22:22:59,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:22:59,046 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 46 transitions. [2022-11-25 22:22:59,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 22:22:59,047 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 46 transitions. [2022-11-25 22:22:59,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-25 22:22:59,048 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:22:59,048 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:22:59,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 22:22:59,049 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-25 22:22:59,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:22:59,049 INFO L85 PathProgramCache]: Analyzing trace with hash -167054315, now seen corresponding path program 1 times [2022-11-25 22:22:59,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:22:59,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002201315] [2022-11-25 22:22:59,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:22:59,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:22:59,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:22:59,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 22:22:59,115 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:22:59,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002201315] [2022-11-25 22:22:59,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002201315] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:22:59,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:22:59,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:22:59,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027452156] [2022-11-25 22:22:59,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:22:59,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:22:59,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:22:59,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:22:59,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:22:59,118 INFO L87 Difference]: Start difference. First operand 35 states and 46 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 22:22:59,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:22:59,138 INFO L93 Difference]: Finished difference Result 57 states and 71 transitions. [2022-11-25 22:22:59,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:22:59,139 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2022-11-25 22:22:59,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:22:59,140 INFO L225 Difference]: With dead ends: 57 [2022-11-25 22:22:59,140 INFO L226 Difference]: Without dead ends: 34 [2022-11-25 22:22:59,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:22:59,142 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 41 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:22:59,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 37 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 22:22:59,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-25 22:22:59,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-11-25 22:22:59,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 21 states have (on average 1.380952380952381) internal successors, (29), 29 states have internal predecessors, (29), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-25 22:22:59,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 43 transitions. [2022-11-25 22:22:59,151 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 43 transitions. Word has length 17 [2022-11-25 22:22:59,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:22:59,151 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 43 transitions. [2022-11-25 22:22:59,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 22:22:59,152 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 43 transitions. [2022-11-25 22:22:59,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-25 22:22:59,153 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:22:59,153 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:22:59,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 22:22:59,153 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-25 22:22:59,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:22:59,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1143993340, now seen corresponding path program 1 times [2022-11-25 22:22:59,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:22:59,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451637592] [2022-11-25 22:22:59,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:22:59,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:22:59,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:22:59,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 22:22:59,217 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:22:59,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451637592] [2022-11-25 22:22:59,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451637592] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:22:59,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:22:59,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 22:22:59,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377642965] [2022-11-25 22:22:59,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:22:59,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:22:59,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:22:59,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:22:59,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:22:59,220 INFO L87 Difference]: Start difference. First operand 34 states and 43 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 22:22:59,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:22:59,247 INFO L93 Difference]: Finished difference Result 34 states and 43 transitions. [2022-11-25 22:22:59,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:22:59,248 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2022-11-25 22:22:59,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:22:59,249 INFO L225 Difference]: With dead ends: 34 [2022-11-25 22:22:59,249 INFO L226 Difference]: Without dead ends: 33 [2022-11-25 22:22:59,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:22:59,251 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 2 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:22:59,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 65 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 22:22:59,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-25 22:22:59,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-11-25 22:22:59,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 28 states have internal predecessors, (28), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-25 22:22:59,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2022-11-25 22:22:59,264 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 18 [2022-11-25 22:22:59,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:22:59,264 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2022-11-25 22:22:59,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 22:22:59,265 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2022-11-25 22:22:59,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-25 22:22:59,266 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:22:59,266 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:22:59,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 22:22:59,266 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-25 22:22:59,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:22:59,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1104529548, now seen corresponding path program 1 times [2022-11-25 22:22:59,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:22:59,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259818800] [2022-11-25 22:22:59,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:22:59,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:22:59,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:22:59,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 22:22:59,422 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:22:59,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259818800] [2022-11-25 22:22:59,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259818800] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:22:59,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:22:59,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:22:59,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554138064] [2022-11-25 22:22:59,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:22:59,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:22:59,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:22:59,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:22:59,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:22:59,425 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 22:22:59,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:22:59,459 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2022-11-25 22:22:59,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:22:59,460 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-11-25 22:22:59,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:22:59,461 INFO L225 Difference]: With dead ends: 43 [2022-11-25 22:22:59,462 INFO L226 Difference]: Without dead ends: 37 [2022-11-25 22:22:59,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:22:59,464 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 17 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:22:59,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 56 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 22:22:59,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-25 22:22:59,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-11-25 22:22:59,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 29 states have internal predecessors, (29), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-25 22:22:59,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2022-11-25 22:22:59,484 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 19 [2022-11-25 22:22:59,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:22:59,485 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2022-11-25 22:22:59,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 22:22:59,485 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2022-11-25 22:22:59,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-25 22:22:59,489 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:22:59,489 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:22:59,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 22:22:59,490 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-25 22:22:59,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:22:59,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1104055263, now seen corresponding path program 1 times [2022-11-25 22:22:59,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:22:59,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697120555] [2022-11-25 22:22:59,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:22:59,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:22:59,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:22:59,669 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 22:22:59,670 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:22:59,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697120555] [2022-11-25 22:22:59,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697120555] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:22:59,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:22:59,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:22:59,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922684428] [2022-11-25 22:22:59,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:22:59,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 22:22:59,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:22:59,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 22:22:59,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:22:59,682 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 22:22:59,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:22:59,756 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2022-11-25 22:22:59,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 22:22:59,758 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-11-25 22:22:59,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:22:59,759 INFO L225 Difference]: With dead ends: 37 [2022-11-25 22:22:59,759 INFO L226 Difference]: Without dead ends: 36 [2022-11-25 22:22:59,760 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 [2022-11-25 22:22:59,762 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 18 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:22:59,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 73 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 22:22:59,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-25 22:22:59,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-11-25 22:22:59,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 28 states have internal predecessors, (28), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-25 22:22:59,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2022-11-25 22:22:59,769 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 19 [2022-11-25 22:22:59,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:22:59,770 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2022-11-25 22:22:59,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 22:22:59,770 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2022-11-25 22:22:59,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-25 22:22:59,776 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:22:59,776 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:22:59,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 22:22:59,777 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-25 22:22:59,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:22:59,779 INFO L85 PathProgramCache]: Analyzing trace with hash 662291229, now seen corresponding path program 1 times [2022-11-25 22:22:59,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:22:59,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022537893] [2022-11-25 22:22:59,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:22:59,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:22:59,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:22:59,939 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 22:22:59,940 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:22:59,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022537893] [2022-11-25 22:22:59,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022537893] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:22:59,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:22:59,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 22:22:59,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912542824] [2022-11-25 22:22:59,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:22:59,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:22:59,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:22:59,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:22:59,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:22:59,944 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-25 22:22:59,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:22:59,975 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2022-11-25 22:22:59,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:22:59,976 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2022-11-25 22:22:59,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:22:59,978 INFO L225 Difference]: With dead ends: 36 [2022-11-25 22:22:59,978 INFO L226 Difference]: Without dead ends: 35 [2022-11-25 22:22:59,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:22:59,981 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 2 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 63 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 [2022-11-25 22:22:59,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 63 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 22:22:59,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-25 22:23:00,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-11-25 22:23:00,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 23 states have (on average 1.173913043478261) internal successors, (27), 27 states have internal predecessors, (27), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-25 22:23:00,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2022-11-25 22:23:00,007 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 23 [2022-11-25 22:23:00,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:23:00,008 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2022-11-25 22:23:00,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-25 22:23:00,008 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2022-11-25 22:23:00,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-25 22:23:00,009 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:23:00,009 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:23:00,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 22:23:00,010 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-25 22:23:00,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:23:00,011 INFO L85 PathProgramCache]: Analyzing trace with hash -943808272, now seen corresponding path program 1 times [2022-11-25 22:23:00,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:23:00,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998931204] [2022-11-25 22:23:00,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:23:00,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:23:00,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:23:00,117 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 22:23:00,117 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:23:00,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998931204] [2022-11-25 22:23:00,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998931204] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:23:00,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:23:00,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 22:23:00,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359301486] [2022-11-25 22:23:00,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:23:00,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:23:00,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:23:00,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:23:00,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:23:00,128 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-25 22:23:00,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:23:00,156 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2022-11-25 22:23:00,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:23:00,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2022-11-25 22:23:00,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:23:00,159 INFO L225 Difference]: With dead ends: 35 [2022-11-25 22:23:00,159 INFO L226 Difference]: Without dead ends: 0 [2022-11-25 22:23:00,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:23:00,163 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:23:00,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 63 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 22:23:00,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-25 22:23:00,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-25 22:23:00,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-11-25 22:23:00,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-25 22:23:00,169 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2022-11-25 22:23:00,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:23:00,171 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-25 22:23:00,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-25 22:23:00,171 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-25 22:23:00,172 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-25 22:23:00,175 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2022-11-25 22:23:00,175 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2022-11-25 22:23:00,176 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2022-11-25 22:23:00,176 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2022-11-25 22:23:00,176 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2022-11-25 22:23:00,176 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2022-11-25 22:23:00,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 22:23:00,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-25 22:23:00,278 INFO L902 garLoopResultBuilder]: At program point printLineENTRY(lines 1412 1418) the Hoare annotation is: true [2022-11-25 22:23:00,278 INFO L899 garLoopResultBuilder]: For program point printLineEXIT(lines 1412 1418) no Hoare annotation was computed. [2022-11-25 22:23:00,278 INFO L899 garLoopResultBuilder]: For program point printIntLineEXIT(lines 1426 1429) no Hoare annotation was computed. [2022-11-25 22:23:00,279 INFO L902 garLoopResultBuilder]: At program point printIntLineENTRY(lines 1426 1429) the Hoare annotation is: true [2022-11-25 22:23:00,279 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 1641) no Hoare annotation was computed. [2022-11-25 22:23:00,279 INFO L902 garLoopResultBuilder]: At program point L1658(line 1658) the Hoare annotation is: true [2022-11-25 22:23:00,279 INFO L899 garLoopResultBuilder]: For program point L1625(line 1625) no Hoare annotation was computed. [2022-11-25 22:23:00,279 INFO L899 garLoopResultBuilder]: For program point L1625-1(line 1625) no Hoare annotation was computed. [2022-11-25 22:23:00,280 INFO L899 garLoopResultBuilder]: For program point L1617(lines 1617 1633) no Hoare annotation was computed. [2022-11-25 22:23:00,280 INFO L902 garLoopResultBuilder]: At program point L1609(line 1609) the Hoare annotation is: true [2022-11-25 22:23:00,280 INFO L902 garLoopResultBuilder]: At program point L1609-1(line 1609) the Hoare annotation is: true [2022-11-25 22:23:00,280 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 1625) no Hoare annotation was computed. [2022-11-25 22:23:00,280 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-25 22:23:00,281 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 1656) no Hoare annotation was computed. [2022-11-25 22:23:00,282 INFO L895 garLoopResultBuilder]: At program point L1564(line 1564) the Hoare annotation is: (and (<= |ULTIMATE.start_goodB2G1_~data~0#1| 2147483647) (= 0 ~CWE191_Integer_Underflow__int_fgets_predec_22_goodB2G1Global~0)) [2022-11-25 22:23:00,282 INFO L899 garLoopResultBuilder]: For program point L1564-1(lines 1558 1565) no Hoare annotation was computed. [2022-11-25 22:23:00,282 INFO L899 garLoopResultBuilder]: For program point L1651(lines 1651 1661) no Hoare annotation was computed. [2022-11-25 22:23:00,282 INFO L895 garLoopResultBuilder]: At program point L1647(line 1647) the Hoare annotation is: (and (<= |ULTIMATE.start_CWE191_Integer_Underflow__int_fgets_predec_22_goodB2G1Sink_~data#1| 2147483647) (<= |ULTIMATE.start_goodB2G1_~data~0#1| 2147483647) (= 0 ~CWE191_Integer_Underflow__int_fgets_predec_22_goodB2G1Global~0) (= ~CWE191_Integer_Underflow__int_fgets_predec_22_goodB2G2Global~0 1) (<= |ULTIMATE.start_CWE191_Integer_Underflow__int_fgets_predec_22_goodB2G2Sink_~data#1| 2147483647) (<= |ULTIMATE.start_goodB2G2_~data~1#1| 2147483647)) [2022-11-25 22:23:00,283 INFO L895 garLoopResultBuilder]: At program point L1643(line 1643) the Hoare annotation is: (and (<= |ULTIMATE.start_CWE191_Integer_Underflow__int_fgets_predec_22_goodB2G1Sink_~data#1| 2147483647) (<= |ULTIMATE.start_goodB2G1_~data~0#1| 2147483647) (= 0 ~CWE191_Integer_Underflow__int_fgets_predec_22_goodB2G1Global~0) (= ~CWE191_Integer_Underflow__int_fgets_predec_22_goodB2G2Global~0 1) (<= |ULTIMATE.start_CWE191_Integer_Underflow__int_fgets_predec_22_goodB2G2Sink_~data#1| 2147483647) (<= |ULTIMATE.start_goodB2G2_~data~1#1| 2147483647)) [2022-11-25 22:23:00,283 INFO L899 garLoopResultBuilder]: For program point L1577(lines 1577 1584) no Hoare annotation was computed. [2022-11-25 22:23:00,283 INFO L899 garLoopResultBuilder]: For program point L1639(lines 1639 1648) no Hoare annotation was computed. [2022-11-25 22:23:00,284 INFO L899 garLoopResultBuilder]: For program point L1635(lines 1635 1650) no Hoare annotation was computed. [2022-11-25 22:23:00,284 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 1625) no Hoare annotation was computed. [2022-11-25 22:23:00,285 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-25 22:23:00,285 INFO L895 garLoopResultBuilder]: At program point L1631(line 1631) the Hoare annotation is: (and (<= |ULTIMATE.start_CWE191_Integer_Underflow__int_fgets_predec_22_goodB2G1Sink_~data#1| 2147483647) (<= |ULTIMATE.start_goodB2G1_~data~0#1| 2147483647) (= 0 ~CWE191_Integer_Underflow__int_fgets_predec_22_goodB2G1Global~0)) [2022-11-25 22:23:00,285 INFO L899 garLoopResultBuilder]: For program point L1631-1(lines 1617 1633) no Hoare annotation was computed. [2022-11-25 22:23:00,285 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 1656) no Hoare annotation was computed. [2022-11-25 22:23:00,286 INFO L895 garLoopResultBuilder]: At program point L1627(line 1627) the Hoare annotation is: (and (<= |ULTIMATE.start_CWE191_Integer_Underflow__int_fgets_predec_22_goodB2G1Sink_~data#1| 2147483647) (<= |ULTIMATE.start_goodB2G1_~data~0#1| 2147483647) (= 0 ~CWE191_Integer_Underflow__int_fgets_predec_22_goodB2G1Global~0)) [2022-11-25 22:23:00,286 INFO L899 garLoopResultBuilder]: For program point L1656(line 1656) no Hoare annotation was computed. [2022-11-25 22:23:00,286 INFO L899 garLoopResultBuilder]: For program point L1623(lines 1623 1632) no Hoare annotation was computed. [2022-11-25 22:23:00,288 INFO L899 garLoopResultBuilder]: For program point L1656-1(line 1656) no Hoare annotation was computed. [2022-11-25 22:23:00,289 INFO L895 garLoopResultBuilder]: At program point L1619(line 1619) the Hoare annotation is: false [2022-11-25 22:23:00,289 INFO L895 garLoopResultBuilder]: At program point L1607(line 1607) the Hoare annotation is: (= 0 ~CWE191_Integer_Underflow__int_fgets_predec_22_goodB2G1Global~0) [2022-11-25 22:23:00,289 INFO L899 garLoopResultBuilder]: For program point L1607-1(line 1607) no Hoare annotation was computed. [2022-11-25 22:23:00,289 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 1641) no Hoare annotation was computed. [2022-11-25 22:23:00,289 INFO L899 garLoopResultBuilder]: For program point L1558(lines 1558 1565) no Hoare annotation was computed. [2022-11-25 22:23:00,290 INFO L899 garLoopResultBuilder]: For program point L1653(lines 1653 1660) no Hoare annotation was computed. [2022-11-25 22:23:00,290 INFO L895 garLoopResultBuilder]: At program point L1583(line 1583) the Hoare annotation is: (and (<= |ULTIMATE.start_CWE191_Integer_Underflow__int_fgets_predec_22_goodB2G1Sink_~data#1| 2147483647) (<= |ULTIMATE.start_goodB2G1_~data~0#1| 2147483647) (= 0 ~CWE191_Integer_Underflow__int_fgets_predec_22_goodB2G1Global~0) (<= |ULTIMATE.start_goodB2G2_~data~1#1| 2147483647)) [2022-11-25 22:23:00,290 INFO L899 garLoopResultBuilder]: For program point L1583-1(lines 1577 1584) no Hoare annotation was computed. [2022-11-25 22:23:00,290 INFO L899 garLoopResultBuilder]: For program point L1641(line 1641) no Hoare annotation was computed. [2022-11-25 22:23:00,291 INFO L899 garLoopResultBuilder]: For program point L1641-1(line 1641) no Hoare annotation was computed. [2022-11-25 22:23:00,291 INFO L899 garLoopResultBuilder]: For program point L1637(lines 1637 1649) no Hoare annotation was computed. [2022-11-25 22:23:00,295 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:23:00,297 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 22:23:00,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 10:23:00 BoogieIcfgContainer [2022-11-25 22:23:00,310 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 22:23:00,311 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 22:23:00,311 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 22:23:00,311 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 22:23:00,312 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:22:58" (3/4) ... [2022-11-25 22:23:00,315 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 22:23:00,322 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure printLine [2022-11-25 22:23:00,322 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure printIntLine [2022-11-25 22:23:00,332 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 27 nodes and edges [2022-11-25 22:23:00,333 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2022-11-25 22:23:00,333 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-25 22:23:00,333 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 22:23:00,334 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 22:23:00,396 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f86bfb4-7767-46ca-80a9-69ed31a22852/bin/utaipan-ByfvJB40ur/witness.graphml [2022-11-25 22:23:00,396 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 22:23:00,397 INFO L158 Benchmark]: Toolchain (without parser) took 4508.40ms. Allocated memory was 186.6MB in the beginning and 253.8MB in the end (delta: 67.1MB). Free memory was 152.3MB in the beginning and 172.3MB in the end (delta: -20.0MB). Peak memory consumption was 48.0MB. Max. memory is 16.1GB. [2022-11-25 22:23:00,397 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 130.0MB. Free memory is still 81.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 22:23:00,398 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1412.08ms. Allocated memory is still 186.6MB. Free memory was 152.3MB in the beginning and 137.8MB in the end (delta: 14.4MB). Peak memory consumption was 59.4MB. Max. memory is 16.1GB. [2022-11-25 22:23:00,398 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.13ms. Allocated memory is still 186.6MB. Free memory was 137.8MB in the beginning and 134.3MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 22:23:00,398 INFO L158 Benchmark]: Boogie Preprocessor took 63.48ms. Allocated memory is still 186.6MB. Free memory was 134.3MB in the beginning and 132.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 22:23:00,399 INFO L158 Benchmark]: RCFGBuilder took 603.62ms. Allocated memory is still 186.6MB. Free memory was 132.9MB in the beginning and 114.8MB in the end (delta: 18.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-25 22:23:00,399 INFO L158 Benchmark]: TraceAbstraction took 2257.39ms. Allocated memory was 186.6MB in the beginning and 253.8MB in the end (delta: 67.1MB). Free memory was 114.0MB in the beginning and 175.5MB in the end (delta: -61.4MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. [2022-11-25 22:23:00,400 INFO L158 Benchmark]: Witness Printer took 85.47ms. Allocated memory is still 253.8MB. Free memory was 175.5MB in the beginning and 172.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 22:23:00,402 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 130.0MB. Free memory is still 81.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1412.08ms. Allocated memory is still 186.6MB. Free memory was 152.3MB in the beginning and 137.8MB in the end (delta: 14.4MB). Peak memory consumption was 59.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.13ms. Allocated memory is still 186.6MB. Free memory was 137.8MB in the beginning and 134.3MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.48ms. Allocated memory is still 186.6MB. Free memory was 134.3MB in the beginning and 132.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 603.62ms. Allocated memory is still 186.6MB. Free memory was 132.9MB in the beginning and 114.8MB in the end (delta: 18.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 2257.39ms. Allocated memory was 186.6MB in the beginning and 253.8MB in the end (delta: 67.1MB). Free memory was 114.0MB in the beginning and 175.5MB in the end (delta: -61.4MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. * Witness Printer took 85.47ms. Allocated memory is still 253.8MB. Free memory was 175.5MB in the beginning and 172.3MB in the end (delta: 3.1MB). 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 - PositiveResult [Line: 1625]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1625]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1641]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1641]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1656]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1656]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 42 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 2.1s, OverallIterations: 8, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 128 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 126 mSDsluCounter, 502 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 221 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 108 IncrementalHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 281 mSDtfsCounter, 108 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=0, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 24 PreInvPairs, 27 NumberOfFragments, 87 HoareAnnotationTreeSize, 24 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 30 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 141 NumberOfCodeBlocks, 141 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 133 ConstructedInterpolants, 0 QuantifiedInterpolants, 187 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 20/20 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 1609]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-25 22:23:00,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f86bfb4-7767-46ca-80a9-69ed31a22852/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE