./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_31_good.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021dbd60-6629-4a57-a9dc-4e9acef9b95a/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021dbd60-6629-4a57-a9dc-4e9acef9b95a/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021dbd60-6629-4a57-a9dc-4e9acef9b95a/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021dbd60-6629-4a57-a9dc-4e9acef9b95a/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_31_good.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021dbd60-6629-4a57-a9dc-4e9acef9b95a/bin/utaipan-I9t0OCRTmS/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021dbd60-6629-4a57-a9dc-4e9acef9b95a/bin/utaipan-I9t0OCRTmS --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 87282a0d70137af0583e15f06502e9f9d4aede3bf3fe5469bf78dfaaa14ea832 --- 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-8393723 [2022-11-19 06:33:47,152 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:33:47,155 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:33:47,174 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:33:47,174 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:33:47,175 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:33:47,177 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:33:47,179 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:33:47,181 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:33:47,182 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:33:47,183 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:33:47,184 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:33:47,185 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:33:47,186 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:33:47,187 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:33:47,189 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:33:47,190 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:33:47,191 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:33:47,193 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:33:47,195 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:33:47,197 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:33:47,198 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:33:47,200 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:33:47,201 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:33:47,205 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:33:47,205 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:33:47,206 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:33:47,207 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:33:47,208 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:33:47,209 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:33:47,209 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:33:47,210 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:33:47,211 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:33:47,212 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:33:47,213 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:33:47,213 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:33:47,214 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:33:47,215 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:33:47,215 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:33:47,216 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:33:47,217 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:33:47,218 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021dbd60-6629-4a57-a9dc-4e9acef9b95a/bin/utaipan-I9t0OCRTmS/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-19 06:33:47,244 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:33:47,248 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:33:47,250 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:33:47,250 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:33:47,251 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:33:47,251 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:33:47,252 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:33:47,252 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:33:47,252 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:33:47,252 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:33:47,254 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:33:47,254 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:33:47,254 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:33:47,254 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:33:47,255 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:33:47,255 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:33:47,255 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:33:47,256 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:33:47,256 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:33:47,257 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 06:33:47,257 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:33:47,257 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:33:47,257 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:33:47,259 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:33:47,259 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:33:47,260 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-19 06:33:47,260 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:33:47,260 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:33:47,260 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:33:47,261 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:33:47,261 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:33:47,261 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:33:47,262 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:33:47,262 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:33:47,262 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:33:47,263 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:33:47,263 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:33:47,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:33:47,264 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:33:47,264 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:33:47,264 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_021dbd60-6629-4a57-a9dc-4e9acef9b95a/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021dbd60-6629-4a57-a9dc-4e9acef9b95a/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87282a0d70137af0583e15f06502e9f9d4aede3bf3fe5469bf78dfaaa14ea832 [2022-11-19 06:33:47,584 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:33:47,616 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:33:47,618 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:33:47,620 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:33:47,621 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:33:47,622 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021dbd60-6629-4a57-a9dc-4e9acef9b95a/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_31_good.i [2022-11-19 06:33:47,702 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021dbd60-6629-4a57-a9dc-4e9acef9b95a/bin/utaipan-I9t0OCRTmS/data/0b1f80c2b/a7d42050e96d46a6af5525252fd063ad/FLAG3bbc9c211 [2022-11-19 06:33:48,383 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:33:48,384 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021dbd60-6629-4a57-a9dc-4e9acef9b95a/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_31_good.i [2022-11-19 06:33:48,410 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021dbd60-6629-4a57-a9dc-4e9acef9b95a/bin/utaipan-I9t0OCRTmS/data/0b1f80c2b/a7d42050e96d46a6af5525252fd063ad/FLAG3bbc9c211 [2022-11-19 06:33:48,534 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021dbd60-6629-4a57-a9dc-4e9acef9b95a/bin/utaipan-I9t0OCRTmS/data/0b1f80c2b/a7d42050e96d46a6af5525252fd063ad [2022-11-19 06:33:48,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:33:48,539 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:33:48,544 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:33:48,545 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:33:48,548 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:33:48,549 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:33:48" (1/1) ... [2022-11-19 06:33:48,550 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4367b5d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:48, skipping insertion in model container [2022-11-19 06:33:48,550 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:33:48" (1/1) ... [2022-11-19 06:33:48,557 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:33:48,634 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:33:49,086 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-19 06:33:49,594 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:33:49,603 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:33:49,620 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-19 06:33:49,672 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:33:49,824 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:33:49,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:49 WrapperNode [2022-11-19 06:33:49,824 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:33:49,825 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:33:49,826 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:33:49,826 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:33:49,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:49" (1/1) ... [2022-11-19 06:33:49,875 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:49" (1/1) ... [2022-11-19 06:33:49,915 INFO L138 Inliner]: procedures = 502, calls = 67, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 71 [2022-11-19 06:33:49,916 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:33:49,917 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:33:49,917 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:33:49,918 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:33:49,927 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:49" (1/1) ... [2022-11-19 06:33:49,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:49" (1/1) ... [2022-11-19 06:33:49,939 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:49" (1/1) ... [2022-11-19 06:33:49,940 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:49" (1/1) ... [2022-11-19 06:33:49,951 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:49" (1/1) ... [2022-11-19 06:33:49,959 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:49" (1/1) ... [2022-11-19 06:33:49,961 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:49" (1/1) ... [2022-11-19 06:33:49,970 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:49" (1/1) ... [2022-11-19 06:33:49,972 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:33:49,973 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:33:49,973 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:33:49,974 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:33:49,975 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:49" (1/1) ... [2022-11-19 06:33:49,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:33:49,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021dbd60-6629-4a57-a9dc-4e9acef9b95a/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:33:50,014 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021dbd60-6629-4a57-a9dc-4e9acef9b95a/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:33:50,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021dbd60-6629-4a57-a9dc-4e9acef9b95a/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:33:50,062 INFO L130 BoogieDeclarations]: Found specification of procedure printIntLine [2022-11-19 06:33:50,062 INFO L138 BoogieDeclarations]: Found implementation of procedure printIntLine [2022-11-19 06:33:50,063 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-19 06:33:50,063 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-19 06:33:50,063 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-19 06:33:50,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 06:33:50,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-19 06:33:50,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:33:50,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:33:50,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:33:50,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 06:33:50,064 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-19 06:33:50,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 06:33:50,209 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:33:50,211 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:33:50,341 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:33:50,404 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:33:50,404 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 06:33:50,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:33:50 BoogieIcfgContainer [2022-11-19 06:33:50,406 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:33:50,408 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:33:50,408 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:33:50,426 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:33:50,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:33:48" (1/3) ... [2022-11-19 06:33:50,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54fcc06c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:33:50, skipping insertion in model container [2022-11-19 06:33:50,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:49" (2/3) ... [2022-11-19 06:33:50,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54fcc06c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:33:50, skipping insertion in model container [2022-11-19 06:33:50,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:33:50" (3/3) ... [2022-11-19 06:33:50,429 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_31_good.i [2022-11-19 06:33:50,457 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:33:50,457 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-19 06:33:50,506 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:33:50,513 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;@5ea37c59, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:33:50,513 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-19 06:33:50,517 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 20 states have internal predecessors, (20), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-19 06:33:50,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 06:33:50,524 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:33:50,525 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-19 06:33:50,525 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-19 06:33:50,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:33:50,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1526916862, now seen corresponding path program 1 times [2022-11-19 06:33:50,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:33:50,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088166043] [2022-11-19 06:33:50,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:33:50,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:33:50,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:33:50,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:33:50,877 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:33:50,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088166043] [2022-11-19 06:33:50,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088166043] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:33:50,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:33:50,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:33:50,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398320189] [2022-11-19 06:33:50,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:33:50,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:33:50,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:33:50,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:33:50,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:33:50,931 INFO L87 Difference]: Start difference. First operand has 27 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 20 states have internal predecessors, (20), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-11-19 06:33:50,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:33:50,995 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2022-11-19 06:33:50,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:33:50,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 6 [2022-11-19 06:33:51,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:33:51,014 INFO L225 Difference]: With dead ends: 27 [2022-11-19 06:33:51,015 INFO L226 Difference]: Without dead ends: 20 [2022-11-19 06:33:51,017 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 [2022-11-19 06:33:51,023 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 14 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:33:51,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 30 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:33:51,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-19 06:33:51,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-11-19 06:33:51,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 12 states have (on average 1.25) internal successors, (15), 15 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 06:33:51,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2022-11-19 06:33:51,061 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 6 [2022-11-19 06:33:51,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:33:51,062 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2022-11-19 06:33:51,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-11-19 06:33:51,063 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2022-11-19 06:33:51,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 06:33:51,064 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:33:51,064 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:33:51,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 06:33:51,065 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-19 06:33:51,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:33:51,066 INFO L85 PathProgramCache]: Analyzing trace with hash -89782418, now seen corresponding path program 1 times [2022-11-19 06:33:51,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:33:51,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188735129] [2022-11-19 06:33:51,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:33:51,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:33:51,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:33:51,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:33:51,190 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:33:51,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188735129] [2022-11-19 06:33:51,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188735129] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:33:51,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:33:51,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:33:51,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776241506] [2022-11-19 06:33:51,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:33:51,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:33:51,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:33:51,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:33:51,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:33:51,209 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-11-19 06:33:51,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:33:51,225 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2022-11-19 06:33:51,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:33:51,225 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 7 [2022-11-19 06:33:51,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:33:51,226 INFO L225 Difference]: With dead ends: 20 [2022-11-19 06:33:51,226 INFO L226 Difference]: Without dead ends: 19 [2022-11-19 06:33:51,227 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 [2022-11-19 06:33:51,228 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:33:51,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:33:51,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-19 06:33:51,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-11-19 06:33:51,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 14 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 06:33:51,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2022-11-19 06:33:51,241 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 7 [2022-11-19 06:33:51,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:33:51,243 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2022-11-19 06:33:51,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-11-19 06:33:51,243 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2022-11-19 06:33:51,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-19 06:33:51,245 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:33:51,245 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:33:51,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 06:33:51,246 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-19 06:33:51,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:33:51,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1652473791, now seen corresponding path program 1 times [2022-11-19 06:33:51,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:33:51,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823043620] [2022-11-19 06:33:51,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:33:51,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:33:51,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:33:51,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:33:51,460 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:33:51,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823043620] [2022-11-19 06:33:51,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823043620] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:33:51,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:33:51,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:33:51,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519691743] [2022-11-19 06:33:51,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:33:51,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:33:51,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:33:51,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:33:51,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:33:51,464 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-11-19 06:33:51,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:33:51,513 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-11-19 06:33:51,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:33:51,518 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 15 [2022-11-19 06:33:51,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:33:51,519 INFO L225 Difference]: With dead ends: 19 [2022-11-19 06:33:51,519 INFO L226 Difference]: Without dead ends: 18 [2022-11-19 06:33:51,519 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 [2022-11-19 06:33:51,520 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 7 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:33:51,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 31 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:33:51,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-19 06:33:51,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-19 06:33:51,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 13 states have internal predecessors, (13), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 06:33:51,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2022-11-19 06:33:51,526 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 15 [2022-11-19 06:33:51,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:33:51,527 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2022-11-19 06:33:51,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-11-19 06:33:51,527 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2022-11-19 06:33:51,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-19 06:33:51,528 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:33:51,528 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:33:51,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 06:33:51,528 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-19 06:33:51,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:33:51,529 INFO L85 PathProgramCache]: Analyzing trace with hash -312919965, now seen corresponding path program 1 times [2022-11-19 06:33:51,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:33:51,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493988642] [2022-11-19 06:33:51,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:33:51,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:33:51,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:33:51,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:33:51,622 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:33:51,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493988642] [2022-11-19 06:33:51,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493988642] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:33:51,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:33:51,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:33:51,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327117685] [2022-11-19 06:33:51,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:33:51,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:33:51,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:33:51,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:33:51,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:33:51,627 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-11-19 06:33:51,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:33:51,657 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2022-11-19 06:33:51,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:33:51,658 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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 16 [2022-11-19 06:33:51,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:33:51,659 INFO L225 Difference]: With dead ends: 18 [2022-11-19 06:33:51,659 INFO L226 Difference]: Without dead ends: 0 [2022-11-19 06:33:51,663 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 [2022-11-19 06:33:51,666 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:33:51,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:33:51,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-19 06:33:51,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-19 06:33:51,675 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) [2022-11-19 06:33:51,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-19 06:33:51,676 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2022-11-19 06:33:51,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:33:51,676 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-19 06:33:51,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-11-19 06:33:51,677 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-19 06:33:51,677 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-19 06:33:51,680 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2022-11-19 06:33:51,682 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2022-11-19 06:33:51,683 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2022-11-19 06:33:51,683 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2022-11-19 06:33:51,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 06:33:51,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-19 06:33:51,731 INFO L902 garLoopResultBuilder]: At program point printLineENTRY(lines 1412 1418) the Hoare annotation is: true [2022-11-19 06:33:51,732 INFO L899 garLoopResultBuilder]: For program point printLineEXIT(lines 1412 1418) no Hoare annotation was computed. [2022-11-19 06:33:51,733 INFO L899 garLoopResultBuilder]: For program point printIntLineEXIT(lines 1426 1429) no Hoare annotation was computed. [2022-11-19 06:33:51,734 INFO L902 garLoopResultBuilder]: At program point printIntLineENTRY(lines 1426 1429) the Hoare annotation is: true [2022-11-19 06:33:51,734 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 1557) no Hoare annotation was computed. [2022-11-19 06:33:51,734 INFO L899 garLoopResultBuilder]: For program point L1569(lines 1569 1576) no Hoare annotation was computed. [2022-11-19 06:33:51,735 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-19 06:33:51,735 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 1583) no Hoare annotation was computed. [2022-11-19 06:33:51,735 INFO L895 garLoopResultBuilder]: At program point L1559(line 1559) the Hoare annotation is: (<= (+ |ULTIMATE.start_goodG2B_~data~1#1| 2) 0) [2022-11-19 06:33:51,735 INFO L899 garLoopResultBuilder]: For program point L1559-1(lines 1548 1562) no Hoare annotation was computed. [2022-11-19 06:33:51,735 INFO L899 garLoopResultBuilder]: For program point L1557(line 1557) no Hoare annotation was computed. [2022-11-19 06:33:51,737 INFO L899 garLoopResultBuilder]: For program point L1557-1(line 1557) no Hoare annotation was computed. [2022-11-19 06:33:51,737 INFO L895 garLoopResultBuilder]: At program point L1603(line 1603) the Hoare annotation is: (<= (+ |ULTIMATE.start_goodG2B_~data~1#1| 2) 0) [2022-11-19 06:33:51,737 INFO L895 garLoopResultBuilder]: At program point L1603-1(line 1603) the Hoare annotation is: (<= (+ |ULTIMATE.start_goodG2B_~data~1#1| 2) 0) [2022-11-19 06:33:51,737 INFO L902 garLoopResultBuilder]: At program point L1601(line 1601) the Hoare annotation is: true [2022-11-19 06:33:51,738 INFO L899 garLoopResultBuilder]: For program point L1601-1(line 1601) no Hoare annotation was computed. [2022-11-19 06:33:51,739 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 1557) no Hoare annotation was computed. [2022-11-19 06:33:51,739 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 1583) no Hoare annotation was computed. [2022-11-19 06:33:51,740 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-19 06:33:51,741 INFO L895 garLoopResultBuilder]: At program point L1589(line 1589) the Hoare annotation is: (<= (+ |ULTIMATE.start_goodG2B_~data~1#1| 2) 0) [2022-11-19 06:33:51,742 INFO L899 garLoopResultBuilder]: For program point L1589-1(lines 1563 1592) no Hoare annotation was computed. [2022-11-19 06:33:51,742 INFO L895 garLoopResultBuilder]: At program point L1585(line 1585) the Hoare annotation is: (<= (+ |ULTIMATE.start_goodG2B_~data~1#1| 2) 0) [2022-11-19 06:33:51,743 INFO L899 garLoopResultBuilder]: For program point L1583(line 1583) no Hoare annotation was computed. [2022-11-19 06:33:51,743 INFO L899 garLoopResultBuilder]: For program point L1583-1(line 1583) no Hoare annotation was computed. [2022-11-19 06:33:51,743 INFO L899 garLoopResultBuilder]: For program point L1581(lines 1581 1590) no Hoare annotation was computed. [2022-11-19 06:33:51,743 INFO L895 garLoopResultBuilder]: At program point L1575(line 1575) the Hoare annotation is: (and (<= (+ |ULTIMATE.start_goodG2B_~data~1#1| 2) 0) (<= |ULTIMATE.start_goodB2G_~data~2#1| 2147483647)) [2022-11-19 06:33:51,744 INFO L899 garLoopResultBuilder]: For program point L1575-1(lines 1569 1576) no Hoare annotation was computed. [2022-11-19 06:33:51,749 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-19 06:33:51,751 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 06:33:51,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 06:33:51 BoogieIcfgContainer [2022-11-19 06:33:51,765 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 06:33:51,766 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 06:33:51,766 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 06:33:51,766 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 06:33:51,767 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:33:50" (3/4) ... [2022-11-19 06:33:51,772 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-19 06:33:51,778 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure printLine [2022-11-19 06:33:51,778 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure printIntLine [2022-11-19 06:33:51,784 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2022-11-19 06:33:51,785 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-19 06:33:51,785 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-19 06:33:51,785 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-19 06:33:51,836 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021dbd60-6629-4a57-a9dc-4e9acef9b95a/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 06:33:51,836 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 06:33:51,837 INFO L158 Benchmark]: Toolchain (without parser) took 3298.08ms. Allocated memory was 119.5MB in the beginning and 151.0MB in the end (delta: 31.5MB). Free memory was 77.2MB in the beginning and 68.4MB in the end (delta: 8.7MB). Peak memory consumption was 38.1MB. Max. memory is 16.1GB. [2022-11-19 06:33:51,838 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 119.5MB. Free memory is still 97.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:33:51,838 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1281.06ms. Allocated memory was 119.5MB in the beginning and 151.0MB in the end (delta: 31.5MB). Free memory was 77.0MB in the beginning and 109.4MB in the end (delta: -32.4MB). Peak memory consumption was 31.8MB. Max. memory is 16.1GB. [2022-11-19 06:33:51,839 INFO L158 Benchmark]: Boogie Procedure Inliner took 90.94ms. Allocated memory is still 151.0MB. Free memory was 109.4MB in the beginning and 106.4MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-19 06:33:51,839 INFO L158 Benchmark]: Boogie Preprocessor took 55.58ms. Allocated memory is still 151.0MB. Free memory was 106.4MB in the beginning and 104.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 06:33:51,840 INFO L158 Benchmark]: RCFGBuilder took 433.07ms. Allocated memory is still 151.0MB. Free memory was 104.4MB in the beginning and 89.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-19 06:33:51,840 INFO L158 Benchmark]: TraceAbstraction took 1357.16ms. Allocated memory is still 151.0MB. Free memory was 88.9MB in the beginning and 71.6MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-19 06:33:51,840 INFO L158 Benchmark]: Witness Printer took 70.73ms. Allocated memory is still 151.0MB. Free memory was 71.6MB in the beginning and 68.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 06:33:51,843 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 119.5MB. Free memory is still 97.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1281.06ms. Allocated memory was 119.5MB in the beginning and 151.0MB in the end (delta: 31.5MB). Free memory was 77.0MB in the beginning and 109.4MB in the end (delta: -32.4MB). Peak memory consumption was 31.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 90.94ms. Allocated memory is still 151.0MB. Free memory was 109.4MB in the beginning and 106.4MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.58ms. Allocated memory is still 151.0MB. Free memory was 106.4MB in the beginning and 104.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 433.07ms. Allocated memory is still 151.0MB. Free memory was 104.4MB in the beginning and 89.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1357.16ms. Allocated memory is still 151.0MB. Free memory was 88.9MB in the beginning and 71.6MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 70.73ms. Allocated memory is still 151.0MB. Free memory was 71.6MB in the beginning and 68.4MB 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: 1557]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1557]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1583]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1583]: 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, 27 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 1.3s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 27 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 115 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 51 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 43 IncrementalHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 64 mSDtfsCounter, 43 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 13 PreInvPairs, 13 NumberOfFragments, 37 HoareAnnotationTreeSize, 13 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 68 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 1603]: Loop Invariant Derived loop invariant: data + 2 <= 0 RESULT: Ultimate proved your program to be correct! [2022-11-19 06:33:51,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021dbd60-6629-4a57-a9dc-4e9acef9b95a/bin/utaipan-I9t0OCRTmS/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