./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/busybox-1.22.0/uudecode-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc 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_e8ad394f-68a7-48fb-8933-3fdaa85838a5/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ad394f-68a7-48fb-8933-3fdaa85838a5/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ad394f-68a7-48fb-8933-3fdaa85838a5/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ad394f-68a7-48fb-8933-3fdaa85838a5/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/uudecode-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ad394f-68a7-48fb-8933-3fdaa85838a5/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ad394f-68a7-48fb-8933-3fdaa85838a5/bin/utaipan-verify-SwPr7d2a91 --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 150ea71e0c96adbe924f08f9358df48371eb6efdbb9a21296b7b08bec4c6d07d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-25 00:06:10,066 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:06:10,197 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ad394f-68a7-48fb-8933-3fdaa85838a5/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-25 00:06:10,209 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:06:10,211 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:06:10,258 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:06:10,260 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:06:10,260 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:06:10,262 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:06:10,262 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:06:10,263 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:06:10,264 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:06:10,265 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:06:10,265 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-25 00:06:10,266 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:06:10,267 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:06:10,268 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-25 00:06:10,268 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-25 00:06:10,269 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:06:10,296 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-25 00:06:10,296 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-25 00:06:10,299 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-25 00:06:10,299 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:06:10,300 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:06:10,300 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-25 00:06:10,301 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:06:10,301 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:06:10,302 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:06:10,302 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:06:10,303 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-25 00:06:10,303 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-25 00:06:10,304 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:06:10,304 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:06:10,305 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:06:10,305 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:06:10,306 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:06:10,306 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:06:10,307 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:06:10,310 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:06:10,310 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-25 00:06:10,311 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-25 00:06:10,311 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-25 00:06:10,311 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:06:10,312 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-25 00:06:10,313 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:06:10,313 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:06:10,313 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_e8ad394f-68a7-48fb-8933-3fdaa85838a5/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ad394f-68a7-48fb-8933-3fdaa85838a5/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 150ea71e0c96adbe924f08f9358df48371eb6efdbb9a21296b7b08bec4c6d07d [2023-11-25 00:06:10,731 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:06:10,762 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:06:10,765 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:06:10,766 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:06:10,768 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:06:10,769 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ad394f-68a7-48fb-8933-3fdaa85838a5/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/busybox-1.22.0/uudecode-2.i [2023-11-25 00:06:13,916 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:06:14,543 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:06:14,543 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ad394f-68a7-48fb-8933-3fdaa85838a5/sv-benchmarks/c/busybox-1.22.0/uudecode-2.i [2023-11-25 00:06:14,585 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ad394f-68a7-48fb-8933-3fdaa85838a5/bin/utaipan-verify-SwPr7d2a91/data/f3d0cf4e1/2c286842a7c04a4fa1c3decf2f5d5301/FLAGa600cb967 [2023-11-25 00:06:14,604 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ad394f-68a7-48fb-8933-3fdaa85838a5/bin/utaipan-verify-SwPr7d2a91/data/f3d0cf4e1/2c286842a7c04a4fa1c3decf2f5d5301 [2023-11-25 00:06:14,612 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:06:14,615 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:06:14,619 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:06:14,620 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:06:14,626 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:06:14,626 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:06:14" (1/1) ... [2023-11-25 00:06:14,627 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b3c366 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:14, skipping insertion in model container [2023-11-25 00:06:14,628 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:06:14" (1/1) ... [2023-11-25 00:06:14,756 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:06:16,734 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:06:16,781 INFO L202 MainTranslator]: Completed pre-run [2023-11-25 00:06:17,067 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:06:17,274 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:06:17,274 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:06:17,274 WARN L675 CHandler]: The function strncmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:06:17,274 WARN L675 CHandler]: The function decode_fn_ptr is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:06:17,274 WARN L675 CHandler]: The function fopen is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:06:17,274 WARN L675 CHandler]: The function strtoul is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:06:17,275 WARN L675 CHandler]: The function fwrite is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:06:17,275 WARN L675 CHandler]: The function fgetc is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:06:17,283 INFO L206 MainTranslator]: Completed translation [2023-11-25 00:06:17,284 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:17 WrapperNode [2023-11-25 00:06:17,284 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:06:17,285 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-25 00:06:17,285 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-25 00:06:17,285 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-25 00:06:17,294 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:17" (1/1) ... [2023-11-25 00:06:17,371 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:17" (1/1) ... [2023-11-25 00:06:17,586 INFO L138 Inliner]: procedures = 620, calls = 857, calls flagged for inlining = 37, calls inlined = 36, statements flattened = 2895 [2023-11-25 00:06:17,586 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-25 00:06:17,587 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-25 00:06:17,587 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-25 00:06:17,588 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-25 00:06:17,599 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:17" (1/1) ... [2023-11-25 00:06:17,600 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:17" (1/1) ... [2023-11-25 00:06:17,651 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:17" (1/1) ... [2023-11-25 00:06:17,652 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:17" (1/1) ... [2023-11-25 00:06:17,770 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:17" (1/1) ... [2023-11-25 00:06:17,792 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:17" (1/1) ... [2023-11-25 00:06:17,817 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:17" (1/1) ... [2023-11-25 00:06:17,834 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:17" (1/1) ... [2023-11-25 00:06:17,854 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-25 00:06:17,855 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-25 00:06:17,855 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-25 00:06:17,855 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-25 00:06:17,856 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:17" (1/1) ... [2023-11-25 00:06:17,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:06:17,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ad394f-68a7-48fb-8933-3fdaa85838a5/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:06:17,889 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ad394f-68a7-48fb-8933-3fdaa85838a5/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-25 00:06:17,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ad394f-68a7-48fb-8933-3fdaa85838a5/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-25 00:06:17,973 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2023-11-25 00:06:17,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc [2023-11-25 00:06:17,973 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc [2023-11-25 00:06:17,974 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2023-11-25 00:06:17,974 INFO L138 BoogieDeclarations]: Found implementation of procedure _IO_getc [2023-11-25 00:06:17,974 INFO L130 BoogieDeclarations]: Found specification of procedure xrealloc [2023-11-25 00:06:17,974 INFO L138 BoogieDeclarations]: Found implementation of procedure xrealloc [2023-11-25 00:06:17,974 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-11-25 00:06:17,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-25 00:06:17,975 INFO L130 BoogieDeclarations]: Found specification of procedure ret_ERANGE [2023-11-25 00:06:17,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ret_ERANGE [2023-11-25 00:06:17,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-25 00:06:17,976 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-11-25 00:06:17,976 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-11-25 00:06:17,976 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2023-11-25 00:06:17,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-25 00:06:17,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-25 00:06:17,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-25 00:06:17,978 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-25 00:06:17,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-25 00:06:17,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-25 00:06:17,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-25 00:06:17,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-25 00:06:17,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-25 00:06:17,980 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-25 00:06:17,980 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc [2023-11-25 00:06:17,980 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc [2023-11-25 00:06:17,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-25 00:06:17,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-25 00:06:17,981 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2023-11-25 00:06:17,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-25 00:06:17,981 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-25 00:06:17,981 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-25 00:06:17,982 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-25 00:06:17,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-25 00:06:17,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-25 00:06:17,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-25 00:06:17,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2023-11-25 00:06:17,983 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2023-11-25 00:06:17,983 INFO L130 BoogieDeclarations]: Found specification of procedure bb_ascii_isalnum [2023-11-25 00:06:17,983 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_ascii_isalnum [2023-11-25 00:06:17,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-25 00:06:17,983 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc_fgetline [2023-11-25 00:06:17,983 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc_fgetline [2023-11-25 00:06:17,983 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-11-25 00:06:17,984 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-11-25 00:06:17,984 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-11-25 00:06:17,984 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2023-11-25 00:06:17,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-25 00:06:18,517 INFO L241 CfgBuilder]: Building ICFG [2023-11-25 00:06:18,521 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-25 00:06:21,033 INFO L282 CfgBuilder]: Performing block encoding [2023-11-25 00:06:21,912 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-25 00:06:21,913 INFO L309 CfgBuilder]: Removed 43 assume(true) statements. [2023-11-25 00:06:21,915 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:06:21 BoogieIcfgContainer [2023-11-25 00:06:21,915 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-25 00:06:21,918 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-25 00:06:21,919 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-25 00:06:21,922 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-25 00:06:21,922 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 12:06:14" (1/3) ... [2023-11-25 00:06:21,924 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13a774a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:06:21, skipping insertion in model container [2023-11-25 00:06:21,924 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:17" (2/3) ... [2023-11-25 00:06:21,926 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13a774a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:06:21, skipping insertion in model container [2023-11-25 00:06:21,926 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:06:21" (3/3) ... [2023-11-25 00:06:21,928 INFO L112 eAbstractionObserver]: Analyzing ICFG uudecode-2.i [2023-11-25 00:06:21,948 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-25 00:06:21,948 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 148 error locations. [2023-11-25 00:06:22,041 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:06:22,051 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=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;@21c95993, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:06:22,051 INFO L358 AbstractCegarLoop]: Starting to check reachability of 148 error locations. [2023-11-25 00:06:22,062 INFO L276 IsEmpty]: Start isEmpty. Operand has 705 states, 504 states have (on average 1.7162698412698412) internal successors, (865), 649 states have internal predecessors, (865), 42 states have call successors, (42), 13 states have call predecessors, (42), 13 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-11-25 00:06:22,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-25 00:06:22,069 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:06:22,070 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-25 00:06:22,070 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 145 more)] === [2023-11-25 00:06:22,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:06:22,076 INFO L85 PathProgramCache]: Analyzing trace with hash 2543690, now seen corresponding path program 1 times [2023-11-25 00:06:22,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:06:22,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886149779] [2023-11-25 00:06:22,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:06:22,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:06:22,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:06:22,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:06:22,694 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:06:22,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886149779] [2023-11-25 00:06:22,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886149779] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:06:22,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:06:22,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-25 00:06:22,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669266320] [2023-11-25 00:06:22,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:06:22,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:06:22,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:06:22,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:06:22,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:06:22,734 INFO L87 Difference]: Start difference. First operand has 705 states, 504 states have (on average 1.7162698412698412) internal successors, (865), 649 states have internal predecessors, (865), 42 states have call successors, (42), 13 states have call predecessors, (42), 13 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2023-11-25 00:06:23,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:06:23,262 INFO L93 Difference]: Finished difference Result 1388 states and 1902 transitions. [2023-11-25 00:06:23,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:06:23,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-25 00:06:23,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:06:23,280 INFO L225 Difference]: With dead ends: 1388 [2023-11-25 00:06:23,280 INFO L226 Difference]: Without dead ends: 684 [2023-11-25 00:06:23,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:06:23,291 INFO L413 NwaCegarLoop]: 787 mSDtfsCounter, 1 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1572 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-25 00:06:23,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1572 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-25 00:06:23,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2023-11-25 00:06:23,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 684. [2023-11-25 00:06:23,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 493 states have (on average 1.6470588235294117) internal successors, (812), 639 states have internal predecessors, (812), 42 states have call successors, (42), 13 states have call predecessors, (42), 12 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-25 00:06:23,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 885 transitions. [2023-11-25 00:06:23,420 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 885 transitions. Word has length 3 [2023-11-25 00:06:23,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:06:23,420 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 885 transitions. [2023-11-25 00:06:23,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2023-11-25 00:06:23,421 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 885 transitions. [2023-11-25 00:06:23,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-25 00:06:23,421 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:06:23,421 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-25 00:06:23,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-25 00:06:23,422 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 145 more)] === [2023-11-25 00:06:23,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:06:23,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1529863076, now seen corresponding path program 1 times [2023-11-25 00:06:23,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:06:23,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22098067] [2023-11-25 00:06:23,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:06:23,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:06:23,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:06:23,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:06:23,672 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:06:23,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22098067] [2023-11-25 00:06:23,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22098067] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:06:23,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49492325] [2023-11-25 00:06:23,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:06:23,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:06:23,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ad394f-68a7-48fb-8933-3fdaa85838a5/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:06:23,680 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ad394f-68a7-48fb-8933-3fdaa85838a5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:06:23,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ad394f-68a7-48fb-8933-3fdaa85838a5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-25 00:06:24,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:06:24,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 906 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-25 00:06:24,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:06:24,226 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:06:24,228 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:06:24,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49492325] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:06:24,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-25 00:06:24,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-25 00:06:24,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487163873] [2023-11-25 00:06:24,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:06:24,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-25 00:06:24,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:06:24,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-25 00:06:24,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:06:24,243 INFO L87 Difference]: Start difference. First operand 684 states and 885 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:06:24,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:06:24,789 INFO L93 Difference]: Finished difference Result 684 states and 885 transitions. [2023-11-25 00:06:24,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-25 00:06:24,790 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-25 00:06:24,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:06:24,795 INFO L225 Difference]: With dead ends: 684 [2023-11-25 00:06:24,795 INFO L226 Difference]: Without dead ends: 683 [2023-11-25 00:06:24,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:06:24,797 INFO L413 NwaCegarLoop]: 783 mSDtfsCounter, 2 mSDsluCounter, 1566 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2349 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-25 00:06:24,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2349 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-25 00:06:24,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2023-11-25 00:06:24,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2023-11-25 00:06:24,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 493 states have (on average 1.645030425963489) internal successors, (811), 638 states have internal predecessors, (811), 42 states have call successors, (42), 13 states have call predecessors, (42), 12 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-25 00:06:24,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 884 transitions. [2023-11-25 00:06:24,833 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 884 transitions. Word has length 6 [2023-11-25 00:06:24,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:06:24,834 INFO L495 AbstractCegarLoop]: Abstraction has 683 states and 884 transitions. [2023-11-25 00:06:24,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:06:24,834 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 884 transitions. [2023-11-25 00:06:24,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-25 00:06:24,834 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:06:24,835 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2023-11-25 00:06:24,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ad394f-68a7-48fb-8933-3fdaa85838a5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-25 00:06:25,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ad394f-68a7-48fb-8933-3fdaa85838a5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:06:25,044 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 145 more)] === [2023-11-25 00:06:25,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:06:25,044 INFO L85 PathProgramCache]: Analyzing trace with hash -181114617, now seen corresponding path program 1 times [2023-11-25 00:06:25,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:06:25,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946385797] [2023-11-25 00:06:25,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:06:25,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:06:25,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:06:25,339 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-25 00:06:25,340 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:06:25,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946385797] [2023-11-25 00:06:25,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946385797] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:06:25,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:06:25,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-25 00:06:25,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761482695] [2023-11-25 00:06:25,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:06:25,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:06:25,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:06:25,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:06:25,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:06:25,348 INFO L87 Difference]: Start difference. First operand 683 states and 884 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:06:25,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:06:25,779 INFO L93 Difference]: Finished difference Result 683 states and 884 transitions. [2023-11-25 00:06:25,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:06:25,780 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-25 00:06:25,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:06:25,785 INFO L225 Difference]: With dead ends: 683 [2023-11-25 00:06:25,785 INFO L226 Difference]: Without dead ends: 682 [2023-11-25 00:06:25,786 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 [2023-11-25 00:06:25,787 INFO L413 NwaCegarLoop]: 783 mSDtfsCounter, 0 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1566 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-25 00:06:25,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1566 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-25 00:06:25,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2023-11-25 00:06:25,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 680. [2023-11-25 00:06:25,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 491 states have (on average 1.645621181262729) internal successors, (808), 635 states have internal predecessors, (808), 42 states have call successors, (42), 13 states have call predecessors, (42), 12 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-25 00:06:25,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 881 transitions. [2023-11-25 00:06:25,815 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 881 transitions. Word has length 7 [2023-11-25 00:06:25,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:06:25,815 INFO L495 AbstractCegarLoop]: Abstraction has 680 states and 881 transitions. [2023-11-25 00:06:25,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:06:25,816 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 881 transitions. [2023-11-25 00:06:25,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-25 00:06:25,816 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:06:25,816 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:06:25,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-25 00:06:25,817 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 145 more)] === [2023-11-25 00:06:25,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:06:25,818 INFO L85 PathProgramCache]: Analyzing trace with hash -29961873, now seen corresponding path program 1 times [2023-11-25 00:06:25,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:06:25,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423920793] [2023-11-25 00:06:25,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:06:25,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:06:25,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:06:26,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:06:26,028 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:06:26,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423920793] [2023-11-25 00:06:26,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423920793] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:06:26,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61691497] [2023-11-25 00:06:26,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:06:26,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:06:26,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ad394f-68a7-48fb-8933-3fdaa85838a5/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:06:26,030 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ad394f-68a7-48fb-8933-3fdaa85838a5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:06:26,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ad394f-68a7-48fb-8933-3fdaa85838a5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-25 00:06:26,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:06:26,467 INFO L262 TraceCheckSpWp]: Trace formula consists of 922 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-25 00:06:26,469 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:06:26,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-25 00:06:26,485 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:06:26,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61691497] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:06:26,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-25 00:06:26,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-25 00:06:26,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432154637] [2023-11-25 00:06:26,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:06:26,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:06:26,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:06:26,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:06:26,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:06:26,488 INFO L87 Difference]: Start difference. First operand 680 states and 881 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-11-25 00:06:26,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:06:26,859 INFO L93 Difference]: Finished difference Result 680 states and 881 transitions. [2023-11-25 00:06:26,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:06:26,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 9 [2023-11-25 00:06:26,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:06:26,865 INFO L225 Difference]: With dead ends: 680 [2023-11-25 00:06:26,866 INFO L226 Difference]: Without dead ends: 678 [2023-11-25 00:06:26,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:06:26,875 INFO L413 NwaCegarLoop]: 776 mSDtfsCounter, 628 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-25 00:06:26,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [646 Valid, 980 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-25 00:06:26,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2023-11-25 00:06:26,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 678. [2023-11-25 00:06:26,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 491 states have (on average 1.6415478615071284) internal successors, (806), 633 states have internal predecessors, (806), 42 states have call successors, (42), 13 states have call predecessors, (42), 12 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-25 00:06:26,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 879 transitions. [2023-11-25 00:06:26,943 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 879 transitions. Word has length 9 [2023-11-25 00:06:26,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:06:26,948 INFO L495 AbstractCegarLoop]: Abstraction has 678 states and 879 transitions. [2023-11-25 00:06:26,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-11-25 00:06:26,949 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 879 transitions. [2023-11-25 00:06:26,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-25 00:06:26,949 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:06:26,949 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:06:26,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ad394f-68a7-48fb-8933-3fdaa85838a5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-25 00:06:27,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ad394f-68a7-48fb-8933-3fdaa85838a5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:06:27,159 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 145 more)] === [2023-11-25 00:06:27,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:06:27,159 INFO L85 PathProgramCache]: Analyzing trace with hash -928817571, now seen corresponding path program 1 times [2023-11-25 00:06:27,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:06:27,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083800648] [2023-11-25 00:06:27,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:06:27,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:06:27,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:06:27,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:06:27,477 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:06:27,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083800648] [2023-11-25 00:06:27,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083800648] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:06:27,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875207156] [2023-11-25 00:06:27,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:06:27,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:06:27,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ad394f-68a7-48fb-8933-3fdaa85838a5/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:06:27,479 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ad394f-68a7-48fb-8933-3fdaa85838a5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:06:27,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ad394f-68a7-48fb-8933-3fdaa85838a5/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-25 00:06:27,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:06:27,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 923 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-25 00:06:27,909 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:06:27,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:06:27,924 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:06:27,952 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:06:27,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875207156] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:06:27,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [96574117] [2023-11-25 00:06:27,974 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-11-25 00:06:27,974 INFO L166 IcfgInterpreter]: Building call graph [2023-11-25 00:06:27,978 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-25 00:06:27,984 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-25 00:06:27,984 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs