./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_65_good.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_801874a5-b148-43b8-996b-4966fddb066c/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_801874a5-b148-43b8-996b-4966fddb066c/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_801874a5-b148-43b8-996b-4966fddb066c/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_801874a5-b148-43b8-996b-4966fddb066c/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_65_good.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_801874a5-b148-43b8-996b-4966fddb066c/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_801874a5-b148-43b8-996b-4966fddb066c/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash eaf576a220299294776f1e95da9d54aa2aa040b13b7e3f77830ae2c7a6a96afd --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:15:55,238 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:15:55,328 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_801874a5-b148-43b8-996b-4966fddb066c/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-64bit-Automizer_Default.epf [2024-11-27 23:15:55,333 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:15:55,334 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:15:55,370 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:15:55,371 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:15:55,371 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:15:55,371 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:15:55,371 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:15:55,372 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:15:55,372 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:15:55,372 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:15:55,372 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:15:55,373 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:15:55,373 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:15:55,374 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 23:15:55,374 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:15:55,374 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:15:55,374 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 23:15:55,375 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:15:55,375 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 23:15:55,375 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-27 23:15:55,375 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-27 23:15:55,375 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 23:15:55,375 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:15:55,375 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:15:55,376 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:15:55,376 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:15:55,376 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:15:55,376 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:15:55,376 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:15:55,376 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:15:55,376 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:15:55,376 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:15:55,376 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:15:55,376 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:15:55,376 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:15:55,377 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:15:55,377 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 23:15:55,377 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 23:15:55,377 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 23:15:55,377 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 23:15:55,377 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:15:55,377 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:15:55,377 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:15:55,377 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:15:55,377 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_801874a5-b148-43b8-996b-4966fddb066c/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness 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 -> Automizer 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 -> eaf576a220299294776f1e95da9d54aa2aa040b13b7e3f77830ae2c7a6a96afd [2024-11-27 23:15:55,660 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:15:55,673 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:15:55,677 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:15:55,678 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:15:55,678 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:15:55,680 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_801874a5-b148-43b8-996b-4966fddb066c/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_65_good.i [2024-11-27 23:15:58,623 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_801874a5-b148-43b8-996b-4966fddb066c/bin/uautomizer-verify-aQ6SnzHsRB/data/22aa3b63d/bd0c9f5836b74fb3b2321eaa94280234/FLAG6d1010150 [2024-11-27 23:15:59,038 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:15:59,039 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_801874a5-b148-43b8-996b-4966fddb066c/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_65_good.i [2024-11-27 23:15:59,078 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_801874a5-b148-43b8-996b-4966fddb066c/bin/uautomizer-verify-aQ6SnzHsRB/data/22aa3b63d/bd0c9f5836b74fb3b2321eaa94280234/FLAG6d1010150 [2024-11-27 23:15:59,184 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_801874a5-b148-43b8-996b-4966fddb066c/bin/uautomizer-verify-aQ6SnzHsRB/data/22aa3b63d/bd0c9f5836b74fb3b2321eaa94280234 [2024-11-27 23:15:59,187 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:15:59,189 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:15:59,190 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:15:59,192 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:15:59,196 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:15:59,197 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:15:59" (1/1) ... [2024-11-27 23:15:59,200 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14f9a41d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:15:59, skipping insertion in model container [2024-11-27 23:15:59,200 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:15:59" (1/1) ... [2024-11-27 23:15:59,269 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:16:00,153 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:16:00,168 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:16:00,259 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:16:00,425 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:16:00,425 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:16:00 WrapperNode [2024-11-27 23:16:00,425 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:16:00,426 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:16:00,426 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:16:00,426 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:16:00,433 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:16:00" (1/1) ... [2024-11-27 23:16:00,459 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:16:00" (1/1) ... [2024-11-27 23:16:00,486 INFO L138 Inliner]: procedures = 503, calls = 36, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 85 [2024-11-27 23:16:00,487 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:16:00,487 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:16:00,488 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:16:00,488 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:16:00,497 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:16:00" (1/1) ... [2024-11-27 23:16:00,498 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:16:00" (1/1) ... [2024-11-27 23:16:00,500 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:16:00" (1/1) ... [2024-11-27 23:16:00,513 INFO L175 MemorySlicer]: Split 1 memory accesses to 1 slices as follows [1]. 100 percent of accesses are in the largest equivalence class. The 1 initializations are split as follows [1]. The 0 writes are split as follows [0]. [2024-11-27 23:16:00,514 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:16:00" (1/1) ... [2024-11-27 23:16:00,514 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:16:00" (1/1) ... [2024-11-27 23:16:00,519 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:16:00" (1/1) ... [2024-11-27 23:16:00,520 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:16:00" (1/1) ... [2024-11-27 23:16:00,522 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:16:00" (1/1) ... [2024-11-27 23:16:00,523 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:16:00" (1/1) ... [2024-11-27 23:16:00,524 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:16:00" (1/1) ... [2024-11-27 23:16:00,526 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:16:00,527 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:16:00,527 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:16:00,527 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:16:00,529 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:16:00" (1/1) ... [2024-11-27 23:16:00,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:16:00,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_801874a5-b148-43b8-996b-4966fddb066c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:16:00,571 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_801874a5-b148-43b8-996b-4966fddb066c/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:16:00,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_801874a5-b148-43b8-996b-4966fddb066c/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:16:00,605 INFO L130 BoogieDeclarations]: Found specification of procedure printIntLine [2024-11-27 23:16:00,605 INFO L138 BoogieDeclarations]: Found implementation of procedure printIntLine [2024-11-27 23:16:00,606 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-11-27 23:16:00,606 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-11-27 23:16:00,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 23:16:00,606 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2024-11-27 23:16:00,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2024-11-27 23:16:00,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:16:00,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:16:00,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 23:16:00,758 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:16:00,760 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:16:00,902 INFO L? ?]: Removed 26 outVars from TransFormulas that were not future-live. [2024-11-27 23:16:00,902 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:16:00,914 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:16:00,915 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-27 23:16:00,915 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:16:00 BoogieIcfgContainer [2024-11-27 23:16:00,916 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:16:00,918 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:16:00,918 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:16:00,923 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:16:00,923 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:15:59" (1/3) ... [2024-11-27 23:16:00,923 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42c02b10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:16:00, skipping insertion in model container [2024-11-27 23:16:00,923 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:16:00" (2/3) ... [2024-11-27 23:16:00,924 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42c02b10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:16:00, skipping insertion in model container [2024-11-27 23:16:00,924 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:16:00" (3/3) ... [2024-11-27 23:16:00,925 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_65_good.i [2024-11-27 23:16:00,945 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:16:00,946 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_predec_65_good.i that has 4 procedures, 44 locations, 1 initial locations, 0 loop locations, and 4 error locations. [2024-11-27 23:16:01,000 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:16:01,011 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@1369b0b9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:16:01,013 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-27 23:16:01,017 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 34 states have internal predecessors, (36), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-27 23:16:01,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-27 23:16:01,024 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:16:01,025 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:16:01,025 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ##fun~int~TO~VOIDErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [##fun~int~TO~VOIDErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ##fun~int~TO~VOIDErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ##fun~int~TO~VOIDErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-11-27 23:16:01,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:16:01,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1313054353, now seen corresponding path program 1 times [2024-11-27 23:16:01,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:16:01,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376777135] [2024-11-27 23:16:01,041 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:16:01,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:16:01,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:16:01,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:16:01,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:16:01,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376777135] [2024-11-27 23:16:01,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376777135] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:16:01,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:16:01,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:16:01,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520926823] [2024-11-27 23:16:01,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:16:01,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:16:01,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:16:01,509 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:16:01,510 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:16:01,513 INFO L87 Difference]: Start difference. First operand has 44 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 34 states have internal predecessors, (36), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 23:16:01,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:16:01,640 INFO L93 Difference]: Finished difference Result 64 states and 76 transitions. [2024-11-27 23:16:01,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:16:01,643 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-11-27 23:16:01,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:16:01,650 INFO L225 Difference]: With dead ends: 64 [2024-11-27 23:16:01,651 INFO L226 Difference]: Without dead ends: 47 [2024-11-27 23:16:01,653 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:16:01,657 INFO L435 NwaCegarLoop]: 46 mSDtfsCounter, 18 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:16:01,658 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 228 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:16:01,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-27 23:16:01,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2024-11-27 23:16:01,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 35 states have internal predecessors, (40), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-27 23:16:01,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2024-11-27 23:16:01,741 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 12 [2024-11-27 23:16:01,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:16:01,743 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2024-11-27 23:16:01,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 23:16:01,743 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2024-11-27 23:16:01,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-27 23:16:01,746 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:16:01,746 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:16:01,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 23:16:01,747 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ##fun~int~TO~VOIDErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [##fun~int~TO~VOIDErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ##fun~int~TO~VOIDErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ##fun~int~TO~VOIDErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-11-27 23:16:01,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:16:01,748 INFO L85 PathProgramCache]: Analyzing trace with hash 2049963512, now seen corresponding path program 1 times [2024-11-27 23:16:01,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:16:01,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577360976] [2024-11-27 23:16:01,748 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:16:01,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:16:01,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:16:01,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:16:01,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:16:01,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577360976] [2024-11-27 23:16:01,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577360976] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:16:01,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:16:01,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:16:01,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700253569] [2024-11-27 23:16:01,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:16:01,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:16:01,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:16:01,861 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:16:01,861 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:16:01,862 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 23:16:01,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:16:01,890 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2024-11-27 23:16:01,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:16:01,891 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2024-11-27 23:16:01,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:16:01,892 INFO L225 Difference]: With dead ends: 44 [2024-11-27 23:16:01,892 INFO L226 Difference]: Without dead ends: 43 [2024-11-27 23:16:01,893 INFO L434 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 [2024-11-27 23:16:01,893 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 1 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:16:01,896 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 76 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:16:01,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-27 23:16:01,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2024-11-27 23:16:01,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 34 states have internal predecessors, (38), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-27 23:16:01,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2024-11-27 23:16:01,908 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 13 [2024-11-27 23:16:01,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:16:01,908 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2024-11-27 23:16:01,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 23:16:01,909 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2024-11-27 23:16:01,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-27 23:16:01,909 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:16:01,909 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:16:01,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 23:16:01,910 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ##fun~int~TO~VOIDErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [##fun~int~TO~VOIDErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ##fun~int~TO~VOIDErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ##fun~int~TO~VOIDErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-11-27 23:16:01,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:16:01,912 INFO L85 PathProgramCache]: Analyzing trace with hash 2049979368, now seen corresponding path program 1 times [2024-11-27 23:16:01,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:16:01,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272042988] [2024-11-27 23:16:01,912 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:16:01,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:16:01,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:16:02,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:16:02,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:16:02,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272042988] [2024-11-27 23:16:02,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272042988] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:16:02,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:16:02,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:16:02,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74538793] [2024-11-27 23:16:02,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:16:02,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:16:02,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:16:02,043 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:16:02,043 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:16:02,043 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand has 6 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 23:16:02,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:16:02,157 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2024-11-27 23:16:02,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:16:02,159 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2024-11-27 23:16:02,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:16:02,160 INFO L225 Difference]: With dead ends: 45 [2024-11-27 23:16:02,160 INFO L226 Difference]: Without dead ends: 44 [2024-11-27 23:16:02,161 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:16:02,161 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 15 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:16:02,162 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 171 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:16:02,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-27 23:16:02,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2024-11-27 23:16:02,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 34 states have internal predecessors, (37), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-27 23:16:02,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2024-11-27 23:16:02,178 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 13 [2024-11-27 23:16:02,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:16:02,179 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2024-11-27 23:16:02,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 23:16:02,179 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2024-11-27 23:16:02,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-27 23:16:02,180 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:16:02,180 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:16:02,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 23:16:02,180 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ##fun~int~TO~VOIDErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [##fun~int~TO~VOIDErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ##fun~int~TO~VOIDErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ##fun~int~TO~VOIDErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-11-27 23:16:02,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:16:02,181 INFO L85 PathProgramCache]: Analyzing trace with hash -875640492, now seen corresponding path program 1 times [2024-11-27 23:16:02,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:16:02,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992834617] [2024-11-27 23:16:02,181 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:16:02,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:16:02,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:16:02,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:16:02,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:16:02,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992834617] [2024-11-27 23:16:02,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992834617] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:16:02,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:16:02,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:16:02,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615558976] [2024-11-27 23:16:02,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:16:02,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:16:02,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:16:02,349 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:16:02,350 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:16:02,350 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 23:16:02,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:16:02,380 INFO L93 Difference]: Finished difference Result 67 states and 74 transitions. [2024-11-27 23:16:02,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:16:02,382 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), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2024-11-27 23:16:02,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:16:02,383 INFO L225 Difference]: With dead ends: 67 [2024-11-27 23:16:02,383 INFO L226 Difference]: Without dead ends: 36 [2024-11-27 23:16:02,383 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:16:02,386 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 6 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:16:02,386 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 89 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:16:02,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-27 23:16:02,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-11-27 23:16:02,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 25 states have (on average 1.16) internal successors, (29), 28 states have internal predecessors, (29), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-27 23:16:02,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2024-11-27 23:16:02,398 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 14 [2024-11-27 23:16:02,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:16:02,398 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2024-11-27 23:16:02,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 23:16:02,398 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2024-11-27 23:16:02,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-27 23:16:02,399 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:16:02,399 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:16:02,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 23:16:02,400 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ##fun~int~TO~VOIDErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [##fun~int~TO~VOIDErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ##fun~int~TO~VOIDErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ##fun~int~TO~VOIDErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-11-27 23:16:02,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:16:02,400 INFO L85 PathProgramCache]: Analyzing trace with hash 379949540, now seen corresponding path program 1 times [2024-11-27 23:16:02,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:16:02,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888199951] [2024-11-27 23:16:02,402 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:16:02,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:16:02,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:16:02,651 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:16:02,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:16:02,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888199951] [2024-11-27 23:16:02,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888199951] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:16:02,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:16:02,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:16:02,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508136536] [2024-11-27 23:16:02,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:16:02,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:16:02,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:16:02,652 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:16:02,653 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:16:02,653 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-27 23:16:02,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:16:02,680 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2024-11-27 23:16:02,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:16:02,681 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2024-11-27 23:16:02,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:16:02,682 INFO L225 Difference]: With dead ends: 36 [2024-11-27 23:16:02,682 INFO L226 Difference]: Without dead ends: 32 [2024-11-27 23:16:02,682 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:16:02,683 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 5 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 82 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 [2024-11-27 23:16:02,683 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 82 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:16:02,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-27 23:16:02,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-11-27 23:16:02,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 24 states have internal predecessors, (25), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-27 23:16:02,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2024-11-27 23:16:02,695 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 28 [2024-11-27 23:16:02,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:16:02,696 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2024-11-27 23:16:02,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-27 23:16:02,696 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2024-11-27 23:16:02,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-27 23:16:02,699 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:16:02,699 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:16:02,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 23:16:02,699 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ##fun~int~TO~VOIDErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [##fun~int~TO~VOIDErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ##fun~int~TO~VOIDErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ##fun~int~TO~VOIDErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-11-27 23:16:02,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:16:02,702 INFO L85 PathProgramCache]: Analyzing trace with hash 58799079, now seen corresponding path program 1 times [2024-11-27 23:16:02,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:16:02,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940767876] [2024-11-27 23:16:02,702 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:16:02,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:16:02,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:16:02,858 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:16:02,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:16:02,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940767876] [2024-11-27 23:16:02,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940767876] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:16:02,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:16:02,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:16:02,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300573099] [2024-11-27 23:16:02,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:16:02,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:16:02,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:16:02,860 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:16:02,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:16:02,860 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-27 23:16:02,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:16:02,914 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2024-11-27 23:16:02,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:16:02,915 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 30 [2024-11-27 23:16:02,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:16:02,915 INFO L225 Difference]: With dead ends: 32 [2024-11-27 23:16:02,915 INFO L226 Difference]: Without dead ends: 0 [2024-11-27 23:16:02,915 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:16:02,916 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 5 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:16:02,916 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 135 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:16:02,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-27 23:16:02,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-27 23:16:02,917 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) [2024-11-27 23:16:02,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-27 23:16:02,917 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2024-11-27 23:16:02,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:16:02,918 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-27 23:16:02,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-27 23:16:02,918 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-27 23:16:02,918 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-27 23:16:02,924 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ##fun~int~TO~VOIDErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2024-11-27 23:16:02,925 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ##fun~int~TO~VOIDErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2024-11-27 23:16:02,925 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ##fun~int~TO~VOIDErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2024-11-27 23:16:02,925 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ##fun~int~TO~VOIDErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2024-11-27 23:16:02,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 23:16:02,930 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-11-27 23:16:02,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-27 23:16:03,183 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-27 23:16:03,192 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:16:03 BoogieIcfgContainer [2024-11-27 23:16:03,192 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-27 23:16:03,193 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-27 23:16:03,193 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-27 23:16:03,193 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-27 23:16:03,194 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:16:00" (3/4) ... [2024-11-27 23:16:03,196 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-27 23:16:03,201 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure printLine [2024-11-27 23:16:03,202 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure printIntLine [2024-11-27 23:16:03,202 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ##fun~int~TO~VOID [2024-11-27 23:16:03,206 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2024-11-27 23:16:03,207 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-11-27 23:16:03,207 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-27 23:16:03,207 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-27 23:16:03,296 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_801874a5-b148-43b8-996b-4966fddb066c/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-27 23:16:03,297 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_801874a5-b148-43b8-996b-4966fddb066c/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-27 23:16:03,297 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-27 23:16:03,298 INFO L158 Benchmark]: Toolchain (without parser) took 4108.98ms. Allocated memory is still 117.4MB. Free memory was 89.0MB in the beginning and 48.5MB in the end (delta: 40.6MB). Peak memory consumption was 42.3MB. Max. memory is 16.1GB. [2024-11-27 23:16:03,298 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 117.4MB. Free memory is still 72.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:16:03,298 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1235.60ms. Allocated memory is still 117.4MB. Free memory was 89.0MB in the beginning and 78.7MB in the end (delta: 10.3MB). Peak memory consumption was 57.8MB. Max. memory is 16.1GB. [2024-11-27 23:16:03,298 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.73ms. Allocated memory is still 117.4MB. Free memory was 78.7MB in the beginning and 76.3MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:16:03,299 INFO L158 Benchmark]: Boogie Preprocessor took 39.24ms. Allocated memory is still 117.4MB. Free memory was 76.3MB in the beginning and 74.0MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:16:03,299 INFO L158 Benchmark]: RCFGBuilder took 388.43ms. Allocated memory is still 117.4MB. Free memory was 74.0MB in the beginning and 60.3MB in the end (delta: 13.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-27 23:16:03,299 INFO L158 Benchmark]: TraceAbstraction took 2274.52ms. Allocated memory is still 117.4MB. Free memory was 59.7MB in the beginning and 54.2MB in the end (delta: 5.5MB). Peak memory consumption was 1.2MB. Max. memory is 16.1GB. [2024-11-27 23:16:03,300 INFO L158 Benchmark]: Witness Printer took 103.83ms. Allocated memory is still 117.4MB. Free memory was 54.2MB in the beginning and 48.5MB in the end (delta: 5.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 23:16:03,303 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 117.4MB. Free memory is still 72.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1235.60ms. Allocated memory is still 117.4MB. Free memory was 89.0MB in the beginning and 78.7MB in the end (delta: 10.3MB). Peak memory consumption was 57.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.73ms. Allocated memory is still 117.4MB. Free memory was 78.7MB in the beginning and 76.3MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 39.24ms. Allocated memory is still 117.4MB. Free memory was 76.3MB in the beginning and 74.0MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 388.43ms. Allocated memory is still 117.4MB. Free memory was 74.0MB in the beginning and 60.3MB in the end (delta: 13.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 2274.52ms. Allocated memory is still 117.4MB. Free memory was 59.7MB in the beginning and 54.2MB in the end (delta: 5.5MB). Peak memory consumption was 1.2MB. Max. memory is 16.1GB. * Witness Printer took 103.83ms. Allocated memory is still 117.4MB. Free memory was 54.2MB in the beginning and 48.5MB in the end (delta: 5.8MB). Peak memory consumption was 8.4MB. 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: 1601]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1601]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1592]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1592]: 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 4 procedures, 44 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 1.9s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 62 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 50 mSDsluCounter, 781 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 563 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 104 IncrementalHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 218 mSDtfsCounter, 104 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=0, InterpolantAutomatonStates: 29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 110 NumberOfCodeBlocks, 110 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 194 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 5/5 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, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-27 23:16:03,328 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_801874a5-b148-43b8-996b-4966fddb066c/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE