./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_51_good.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b 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_28a82649-23ca-41d2-b6f5-f0f0a216af56/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a82649-23ca-41d2-b6f5-f0f0a216af56/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_28a82649-23ca-41d2-b6f5-f0f0a216af56/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a82649-23ca-41d2-b6f5-f0f0a216af56/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_51_good.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a82649-23ca-41d2-b6f5-f0f0a216af56/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_28a82649-23ca-41d2-b6f5-f0f0a216af56/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 73cfb57245446a9136f9d811410fcc3fe00b572cf7332bf85e5b49a1f94d4d5e --- 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 06:51:02,227 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:51:02,233 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:51:02,271 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:51:02,271 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:51:02,273 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:51:02,274 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:51:02,276 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:51:02,286 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:51:02,293 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:51:02,294 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:51:02,298 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:51:02,299 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:51:02,301 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:51:02,304 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:51:02,307 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:51:02,308 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:51:02,309 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:51:02,315 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:51:02,319 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:51:02,323 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:51:02,324 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:51:02,328 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:51:02,329 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:51:02,338 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:51:02,340 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:51:02,341 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:51:02,342 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:51:02,344 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:51:02,345 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:51:02,345 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:51:02,347 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:51:02,349 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:51:02,350 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:51:02,353 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:51:02,353 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:51:02,355 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:51:02,355 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:51:02,356 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:51:02,357 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:51:02,357 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:51:02,358 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a82649-23ca-41d2-b6f5-f0f0a216af56/bin/utaipan-I9t0OCRTmS/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-19 06:51:02,403 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:51:02,404 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:51:02,405 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:51:02,405 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:51:02,406 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:51:02,406 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:51:02,406 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:51:02,406 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:51:02,407 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:51:02,407 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:51:02,408 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:51:02,408 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:51:02,409 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:51:02,409 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:51:02,409 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:51:02,409 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:51:02,410 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:51:02,410 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:51:02,411 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:51:02,411 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 06:51:02,411 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:51:02,411 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:51:02,412 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:51:02,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:51:02,414 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:51:02,414 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-19 06:51:02,414 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:51:02,414 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:51:02,415 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:51:02,415 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:51:02,415 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:51:02,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:51:02,416 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:51:02,416 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:51:02,416 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:51:02,416 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:51:02,417 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:51:02,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:51:02,417 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:51:02,417 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:51:02,417 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_28a82649-23ca-41d2-b6f5-f0f0a216af56/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a82649-23ca-41d2-b6f5-f0f0a216af56/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73cfb57245446a9136f9d811410fcc3fe00b572cf7332bf85e5b49a1f94d4d5e [2022-11-19 06:51:02,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:51:02,807 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:51:02,809 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:51:02,811 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:51:02,812 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:51:02,813 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a82649-23ca-41d2-b6f5-f0f0a216af56/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_51_good.i [2022-11-19 06:51:02,905 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a82649-23ca-41d2-b6f5-f0f0a216af56/bin/utaipan-I9t0OCRTmS/data/427f489f5/defffb6e243347afb6a5070f0a46ea6c/FLAGbbb12b24d [2022-11-19 06:51:03,635 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:51:03,636 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a82649-23ca-41d2-b6f5-f0f0a216af56/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_51_good.i [2022-11-19 06:51:03,671 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a82649-23ca-41d2-b6f5-f0f0a216af56/bin/utaipan-I9t0OCRTmS/data/427f489f5/defffb6e243347afb6a5070f0a46ea6c/FLAGbbb12b24d [2022-11-19 06:51:03,798 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a82649-23ca-41d2-b6f5-f0f0a216af56/bin/utaipan-I9t0OCRTmS/data/427f489f5/defffb6e243347afb6a5070f0a46ea6c [2022-11-19 06:51:03,801 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:51:03,803 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:51:03,808 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:51:03,809 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:51:03,815 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:51:03,816 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:51:03" (1/1) ... [2022-11-19 06:51:03,817 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e817cec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:03, skipping insertion in model container [2022-11-19 06:51:03,817 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:51:03" (1/1) ... [2022-11-19 06:51:03,827 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:51:03,916 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:51:04,435 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-19 06:51:05,251 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:51:05,264 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:51:05,297 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-19 06:51:05,366 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:51:05,545 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:51:05,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:05 WrapperNode [2022-11-19 06:51:05,546 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:51:05,547 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:51:05,547 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:51:05,547 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:51:05,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:05" (1/1) ... [2022-11-19 06:51:05,581 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:05" (1/1) ... [2022-11-19 06:51:05,608 INFO L138 Inliner]: procedures = 504, calls = 69, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 71 [2022-11-19 06:51:05,608 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:51:05,609 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:51:05,609 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:51:05,610 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:51:05,620 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:05" (1/1) ... [2022-11-19 06:51:05,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:05" (1/1) ... [2022-11-19 06:51:05,623 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:05" (1/1) ... [2022-11-19 06:51:05,624 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:05" (1/1) ... [2022-11-19 06:51:05,630 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:05" (1/1) ... [2022-11-19 06:51:05,632 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:05" (1/1) ... [2022-11-19 06:51:05,634 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:05" (1/1) ... [2022-11-19 06:51:05,636 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:05" (1/1) ... [2022-11-19 06:51:05,638 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:51:05,639 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:51:05,640 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:51:05,640 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:51:05,641 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:05" (1/1) ... [2022-11-19 06:51:05,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:51:05,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a82649-23ca-41d2-b6f5-f0f0a216af56/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:51:05,687 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a82649-23ca-41d2-b6f5-f0f0a216af56/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:51:05,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a82649-23ca-41d2-b6f5-f0f0a216af56/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:51:05,754 INFO L130 BoogieDeclarations]: Found specification of procedure printIntLine [2022-11-19 06:51:05,754 INFO L138 BoogieDeclarations]: Found implementation of procedure printIntLine [2022-11-19 06:51:05,755 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-19 06:51:05,755 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-19 06:51:05,755 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-19 06:51:05,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 06:51:05,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-19 06:51:05,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:51:05,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:51:05,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:51:05,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 06:51:05,757 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-19 06:51:05,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 06:51:06,055 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:51:06,071 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:51:06,315 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:51:06,348 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:51:06,348 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 06:51:06,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:51:06 BoogieIcfgContainer [2022-11-19 06:51:06,352 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:51:06,354 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:51:06,354 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:51:06,358 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:51:06,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:51:03" (1/3) ... [2022-11-19 06:51:06,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fed223d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:51:06, skipping insertion in model container [2022-11-19 06:51:06,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:05" (2/3) ... [2022-11-19 06:51:06,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fed223d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:51:06, skipping insertion in model container [2022-11-19 06:51:06,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:51:06" (3/3) ... [2022-11-19 06:51:06,362 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_51_good.i [2022-11-19 06:51:06,384 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:51:06,384 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-19 06:51:06,438 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:51:06,464 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;@72a26129, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:51:06,464 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-19 06:51:06,469 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 06:51:06,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 06:51:06,477 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:51:06,477 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-19 06:51:06,478 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 06:51:06,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:51:06,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1351265282, now seen corresponding path program 1 times [2022-11-19 06:51:06,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:51:06,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730134780] [2022-11-19 06:51:06,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:51:06,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:51:06,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:51:06,759 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 06:51:06,759 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:51:06,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730134780] [2022-11-19 06:51:06,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730134780] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:51:06,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:51:06,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:51:06,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156441019] [2022-11-19 06:51:06,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:51:06,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:51:06,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:51:06,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:51:06,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:51:06,804 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 06:51:06,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:51:06,881 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2022-11-19 06:51:06,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:51:06,884 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 06:51:06,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:51:06,893 INFO L225 Difference]: With dead ends: 27 [2022-11-19 06:51:06,894 INFO L226 Difference]: Without dead ends: 20 [2022-11-19 06:51:06,900 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 06:51:06,904 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 14 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:51:06,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 29 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:51:06,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-19 06:51:06,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-11-19 06:51:06,938 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 06:51:06,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2022-11-19 06:51:06,941 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 6 [2022-11-19 06:51:06,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:51:06,943 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2022-11-19 06:51:06,943 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 06:51:06,943 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2022-11-19 06:51:06,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 06:51:06,945 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:51:06,945 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:51:06,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 06:51:06,946 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 06:51:06,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:51:06,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1060449266, now seen corresponding path program 1 times [2022-11-19 06:51:06,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:51:06,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669884079] [2022-11-19 06:51:06,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:51:06,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:51:06,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:51:07,116 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 06:51:07,117 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:51:07,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669884079] [2022-11-19 06:51:07,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669884079] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:51:07,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:51:07,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:51:07,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059145040] [2022-11-19 06:51:07,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:51:07,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:51:07,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:51:07,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:51:07,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:51:07,122 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 06:51:07,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:51:07,142 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2022-11-19 06:51:07,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:51:07,143 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 06:51:07,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:51:07,144 INFO L225 Difference]: With dead ends: 20 [2022-11-19 06:51:07,144 INFO L226 Difference]: Without dead ends: 19 [2022-11-19 06:51:07,145 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 06:51:07,146 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 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 [2022-11-19 06:51:07,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:51:07,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-19 06:51:07,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-11-19 06:51:07,152 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 06:51:07,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2022-11-19 06:51:07,153 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 7 [2022-11-19 06:51:07,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:51:07,153 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2022-11-19 06:51:07,154 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 06:51:07,154 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2022-11-19 06:51:07,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-19 06:51:07,155 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:51:07,155 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:51:07,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 06:51:07,156 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 06:51:07,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:51:07,157 INFO L85 PathProgramCache]: Analyzing trace with hash 933604081, now seen corresponding path program 1 times [2022-11-19 06:51:07,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:51:07,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748582198] [2022-11-19 06:51:07,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:51:07,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:51:07,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:51:07,393 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 06:51:07,393 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:51:07,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748582198] [2022-11-19 06:51:07,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748582198] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:51:07,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:51:07,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:51:07,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831395989] [2022-11-19 06:51:07,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:51:07,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:51:07,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:51:07,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:51:07,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:51:07,397 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 06:51:07,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:51:07,431 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-11-19 06:51:07,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:51:07,432 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 06:51:07,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:51:07,433 INFO L225 Difference]: With dead ends: 19 [2022-11-19 06:51:07,433 INFO L226 Difference]: Without dead ends: 18 [2022-11-19 06:51:07,434 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 06:51:07,435 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:51:07,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 30 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:51:07,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-19 06:51:07,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-19 06:51:07,441 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 06:51:07,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2022-11-19 06:51:07,442 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 15 [2022-11-19 06:51:07,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:51:07,442 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2022-11-19 06:51:07,443 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 06:51:07,443 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2022-11-19 06:51:07,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-19 06:51:07,444 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:51:07,444 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:51:07,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 06:51:07,445 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 06:51:07,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:51:07,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1123044493, now seen corresponding path program 1 times [2022-11-19 06:51:07,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:51:07,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803415798] [2022-11-19 06:51:07,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:51:07,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:51:07,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:51:07,525 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 06:51:07,526 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:51:07,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803415798] [2022-11-19 06:51:07,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803415798] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:51:07,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:51:07,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:51:07,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938188260] [2022-11-19 06:51:07,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:51:07,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:51:07,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:51:07,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:51:07,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:51:07,529 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 06:51:07,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:51:07,548 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2022-11-19 06:51:07,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:51:07,549 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 06:51:07,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:51:07,550 INFO L225 Difference]: With dead ends: 18 [2022-11-19 06:51:07,550 INFO L226 Difference]: Without dead ends: 0 [2022-11-19 06:51:07,550 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 06:51:07,552 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 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 [2022-11-19 06:51:07,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:51:07,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-19 06:51:07,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-19 06:51:07,554 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 06:51:07,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-19 06:51:07,554 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2022-11-19 06:51:07,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:51:07,555 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-19 06:51:07,555 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 06:51:07,555 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-19 06:51:07,555 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-19 06:51:07,558 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2022-11-19 06:51:07,559 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2022-11-19 06:51:07,559 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2022-11-19 06:51:07,560 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2022-11-19 06:51:07,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 06:51:07,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-19 06:51:07,590 INFO L902 garLoopResultBuilder]: At program point printLineENTRY(lines 1412 1418) the Hoare annotation is: true [2022-11-19 06:51:07,590 INFO L899 garLoopResultBuilder]: For program point printLineEXIT(lines 1412 1418) no Hoare annotation was computed. [2022-11-19 06:51:07,590 INFO L899 garLoopResultBuilder]: For program point printIntLineEXIT(lines 1426 1429) no Hoare annotation was computed. [2022-11-19 06:51:07,590 INFO L902 garLoopResultBuilder]: At program point printIntLineENTRY(lines 1426 1429) the Hoare annotation is: true [2022-11-19 06:51:07,591 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 1590) no Hoare annotation was computed. [2022-11-19 06:51:07,591 INFO L895 garLoopResultBuilder]: At program point L1569(line 1569) the Hoare annotation is: (and (<= |ULTIMATE.start_goodB2G_~data~1#1| 2147483647) (<= (+ |ULTIMATE.start_CWE191_Integer_Underflow__int_fgets_predec_51b_goodG2BSink_~data#1| 2) 0)) [2022-11-19 06:51:07,591 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-19 06:51:07,592 INFO L899 garLoopResultBuilder]: For program point L1569-1(lines 1563 1570) no Hoare annotation was computed. [2022-11-19 06:51:07,592 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 1599) no Hoare annotation was computed. [2022-11-19 06:51:07,592 INFO L899 garLoopResultBuilder]: For program point L1563(lines 1563 1570) no Hoare annotation was computed. [2022-11-19 06:51:07,592 INFO L895 garLoopResultBuilder]: At program point L1592(line 1592) the Hoare annotation is: (<= (+ |ULTIMATE.start_CWE191_Integer_Underflow__int_fgets_predec_51b_goodG2BSink_~data#1| 2) 0) [2022-11-19 06:51:07,593 INFO L899 garLoopResultBuilder]: For program point L1592-1(lines 1587 1594) no Hoare annotation was computed. [2022-11-19 06:51:07,593 INFO L899 garLoopResultBuilder]: For program point L1590(line 1590) no Hoare annotation was computed. [2022-11-19 06:51:07,593 INFO L899 garLoopResultBuilder]: For program point L1590-1(line 1590) no Hoare annotation was computed. [2022-11-19 06:51:07,593 INFO L895 garLoopResultBuilder]: At program point L1584(line 1584) the Hoare annotation is: (<= (+ |ULTIMATE.start_CWE191_Integer_Underflow__int_fgets_predec_51b_goodG2BSink_~data#1| 2) 0) [2022-11-19 06:51:07,593 INFO L895 garLoopResultBuilder]: At program point L1584-1(line 1584) the Hoare annotation is: (<= (+ |ULTIMATE.start_CWE191_Integer_Underflow__int_fgets_predec_51b_goodG2BSink_~data#1| 2) 0) [2022-11-19 06:51:07,594 INFO L902 garLoopResultBuilder]: At program point L1582(line 1582) the Hoare annotation is: true [2022-11-19 06:51:07,594 INFO L899 garLoopResultBuilder]: For program point L1582-1(line 1582) no Hoare annotation was computed. [2022-11-19 06:51:07,594 INFO L895 garLoopResultBuilder]: At program point L1605(line 1605) the Hoare annotation is: (<= (+ |ULTIMATE.start_CWE191_Integer_Underflow__int_fgets_predec_51b_goodG2BSink_~data#1| 2) 0) [2022-11-19 06:51:07,594 INFO L899 garLoopResultBuilder]: For program point L1605-1(lines 1595 1607) no Hoare annotation was computed. [2022-11-19 06:51:07,595 INFO L895 garLoopResultBuilder]: At program point L1601(line 1601) the Hoare annotation is: (<= (+ |ULTIMATE.start_CWE191_Integer_Underflow__int_fgets_predec_51b_goodG2BSink_~data#1| 2) 0) [2022-11-19 06:51:07,595 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 1590) no Hoare annotation was computed. [2022-11-19 06:51:07,595 INFO L899 garLoopResultBuilder]: For program point L1599(line 1599) no Hoare annotation was computed. [2022-11-19 06:51:07,595 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 1599) no Hoare annotation was computed. [2022-11-19 06:51:07,596 INFO L899 garLoopResultBuilder]: For program point L1599-1(line 1599) no Hoare annotation was computed. [2022-11-19 06:51:07,596 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-19 06:51:07,596 INFO L899 garLoopResultBuilder]: For program point L1597(lines 1597 1606) no Hoare annotation was computed. [2022-11-19 06:51:07,600 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-19 06:51:07,602 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 06:51:07,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 06:51:07 BoogieIcfgContainer [2022-11-19 06:51:07,623 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 06:51:07,625 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 06:51:07,626 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 06:51:07,626 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 06:51:07,627 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:51:06" (3/4) ... [2022-11-19 06:51:07,631 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-19 06:51:07,637 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure printLine [2022-11-19 06:51:07,637 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure printIntLine [2022-11-19 06:51:07,646 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2022-11-19 06:51:07,647 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-19 06:51:07,647 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-19 06:51:07,647 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-19 06:51:07,709 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a82649-23ca-41d2-b6f5-f0f0a216af56/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 06:51:07,710 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 06:51:07,711 INFO L158 Benchmark]: Toolchain (without parser) took 3907.10ms. Allocated memory was 102.8MB in the beginning and 136.3MB in the end (delta: 33.6MB). Free memory was 59.2MB in the beginning and 103.4MB in the end (delta: -44.2MB). Peak memory consumption was 51.1MB. Max. memory is 16.1GB. [2022-11-19 06:51:07,711 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 102.8MB. Free memory is still 79.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:51:07,712 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1737.80ms. Allocated memory was 102.8MB in the beginning and 136.3MB in the end (delta: 33.6MB). Free memory was 59.0MB in the beginning and 90.8MB in the end (delta: -31.8MB). Peak memory consumption was 25.9MB. Max. memory is 16.1GB. [2022-11-19 06:51:07,712 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.06ms. Allocated memory is still 136.3MB. Free memory was 90.8MB in the beginning and 87.5MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-19 06:51:07,712 INFO L158 Benchmark]: Boogie Preprocessor took 29.53ms. Allocated memory is still 136.3MB. Free memory was 87.5MB in the beginning and 86.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 06:51:07,713 INFO L158 Benchmark]: RCFGBuilder took 712.29ms. Allocated memory is still 136.3MB. Free memory was 86.0MB in the beginning and 70.7MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-19 06:51:07,713 INFO L158 Benchmark]: TraceAbstraction took 1269.42ms. Allocated memory is still 136.3MB. Free memory was 70.1MB in the beginning and 44.2MB in the end (delta: 25.9MB). Peak memory consumption was 26.7MB. Max. memory is 16.1GB. [2022-11-19 06:51:07,714 INFO L158 Benchmark]: Witness Printer took 84.39ms. Allocated memory is still 136.3MB. Free memory was 44.2MB in the beginning and 103.4MB in the end (delta: -59.2MB). Peak memory consumption was 2.6MB. Max. memory is 16.1GB. [2022-11-19 06:51:07,716 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 102.8MB. Free memory is still 79.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1737.80ms. Allocated memory was 102.8MB in the beginning and 136.3MB in the end (delta: 33.6MB). Free memory was 59.0MB in the beginning and 90.8MB in the end (delta: -31.8MB). Peak memory consumption was 25.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.06ms. Allocated memory is still 136.3MB. Free memory was 90.8MB in the beginning and 87.5MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.53ms. Allocated memory is still 136.3MB. Free memory was 87.5MB in the beginning and 86.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 712.29ms. Allocated memory is still 136.3MB. Free memory was 86.0MB in the beginning and 70.7MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1269.42ms. Allocated memory is still 136.3MB. Free memory was 70.1MB in the beginning and 44.2MB in the end (delta: 25.9MB). Peak memory consumption was 26.7MB. Max. memory is 16.1GB. * Witness Printer took 84.39ms. Allocated memory is still 136.3MB. Free memory was 44.2MB in the beginning and 103.4MB in the end (delta: -59.2MB). Peak memory consumption was 2.6MB. 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: 1590]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1590]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1599]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1599]: 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: 1.2s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 27 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 110 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 50 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 48 IncrementalHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 60 mSDtfsCounter, 48 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, 0.0s 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: 1584]: Loop Invariant Derived loop invariant: data + 2 <= 0 RESULT: Ultimate proved your program to be correct! [2022-11-19 06:51:07,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a82649-23ca-41d2-b6f5-f0f0a216af56/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