./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 9bd2c7ff 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_287184cb-a5c0-4bcf-8fd7-cafe6d42b4b1/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287184cb-a5c0-4bcf-8fd7-cafe6d42b4b1/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287184cb-a5c0-4bcf-8fd7-cafe6d42b4b1/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287184cb-a5c0-4bcf-8fd7-cafe6d42b4b1/bin/utaipan-verify-t7M7D8N6sZ/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_287184cb-a5c0-4bcf-8fd7-cafe6d42b4b1/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287184cb-a5c0-4bcf-8fd7-cafe6d42b4b1/bin/utaipan-verify-t7M7D8N6sZ --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 0.2.3-dev-9bd2c7f [2023-11-19 05:18:43,119 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:18:43,227 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287184cb-a5c0-4bcf-8fd7-cafe6d42b4b1/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-19 05:18:43,233 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:18:43,234 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:18:43,275 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:18:43,276 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:18:43,276 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:18:43,277 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:18:43,278 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:18:43,279 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:18:43,279 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:18:43,280 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:18:43,281 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:18:43,281 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:18:43,282 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:18:43,283 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:18:43,283 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:18:43,284 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:18:43,285 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:18:43,285 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:18:43,286 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:18:43,287 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:18:43,287 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:18:43,288 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:18:43,288 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:18:43,289 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:18:43,289 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:18:43,290 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:18:43,290 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 05:18:43,291 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:18:43,291 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:18:43,292 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:18:43,292 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:18:43,292 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:18:43,293 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:18:43,293 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:18:43,294 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:18:43,294 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:18:43,294 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:18:43,295 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:18:43,295 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:18:43,295 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:18:43,296 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:18:43,296 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_287184cb-a5c0-4bcf-8fd7-cafe6d42b4b1/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287184cb-a5c0-4bcf-8fd7-cafe6d42b4b1/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 150ea71e0c96adbe924f08f9358df48371eb6efdbb9a21296b7b08bec4c6d07d [2023-11-19 05:18:43,560 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:18:43,599 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:18:43,602 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:18:43,604 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:18:43,604 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:18:43,606 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287184cb-a5c0-4bcf-8fd7-cafe6d42b4b1/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/busybox-1.22.0/uudecode-2.i [2023-11-19 05:18:47,001 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:18:47,612 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:18:47,613 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287184cb-a5c0-4bcf-8fd7-cafe6d42b4b1/sv-benchmarks/c/busybox-1.22.0/uudecode-2.i [2023-11-19 05:18:47,657 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287184cb-a5c0-4bcf-8fd7-cafe6d42b4b1/bin/utaipan-verify-t7M7D8N6sZ/data/717c842f0/5efc1a4bc15c43c1bb704b0c25021dc0/FLAG6eed9b707 [2023-11-19 05:18:47,679 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287184cb-a5c0-4bcf-8fd7-cafe6d42b4b1/bin/utaipan-verify-t7M7D8N6sZ/data/717c842f0/5efc1a4bc15c43c1bb704b0c25021dc0 [2023-11-19 05:18:47,683 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:18:47,684 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:18:47,686 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:18:47,687 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:18:47,694 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:18:47,695 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:18:47" (1/1) ... [2023-11-19 05:18:47,696 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@790ea196 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:47, skipping insertion in model container [2023-11-19 05:18:47,696 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:18:47" (1/1) ... [2023-11-19 05:18:47,851 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:18:50,084 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:18:50,135 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:18:50,405 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:18:50,688 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:18:50,688 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:18:50,689 WARN L675 CHandler]: The function strncmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:18:50,689 WARN L675 CHandler]: The function decode_fn_ptr is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:18:50,689 WARN L675 CHandler]: The function fopen is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:18:50,689 WARN L675 CHandler]: The function strtoul is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:18:50,689 WARN L675 CHandler]: The function fwrite is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:18:50,690 WARN L675 CHandler]: The function fgetc is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:18:50,698 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:18:50,699 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:50 WrapperNode [2023-11-19 05:18:50,699 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:18:50,701 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:18:50,701 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:18:50,701 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:18:50,710 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:50" (1/1) ... [2023-11-19 05:18:50,820 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:50" (1/1) ... [2023-11-19 05:18:50,961 INFO L138 Inliner]: procedures = 620, calls = 857, calls flagged for inlining = 37, calls inlined = 36, statements flattened = 2877 [2023-11-19 05:18:50,962 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:18:50,962 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:18:50,962 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:18:50,963 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:18:50,973 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:50" (1/1) ... [2023-11-19 05:18:50,974 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:50" (1/1) ... [2023-11-19 05:18:50,992 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:50" (1/1) ... [2023-11-19 05:18:50,992 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:50" (1/1) ... [2023-11-19 05:18:51,070 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:50" (1/1) ... [2023-11-19 05:18:51,094 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:50" (1/1) ... [2023-11-19 05:18:51,130 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:50" (1/1) ... [2023-11-19 05:18:51,159 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:50" (1/1) ... [2023-11-19 05:18:51,196 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:18:51,197 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:18:51,197 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:18:51,197 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:18:51,198 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:50" (1/1) ... [2023-11-19 05:18:51,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:18:51,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287184cb-a5c0-4bcf-8fd7-cafe6d42b4b1/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:18:51,242 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287184cb-a5c0-4bcf-8fd7-cafe6d42b4b1/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:18:51,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287184cb-a5c0-4bcf-8fd7-cafe6d42b4b1/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:18:51,340 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2023-11-19 05:18:51,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc [2023-11-19 05:18:51,341 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc [2023-11-19 05:18:51,343 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2023-11-19 05:18:51,343 INFO L138 BoogieDeclarations]: Found implementation of procedure _IO_getc [2023-11-19 05:18:51,343 INFO L130 BoogieDeclarations]: Found specification of procedure xrealloc [2023-11-19 05:18:51,343 INFO L138 BoogieDeclarations]: Found implementation of procedure xrealloc [2023-11-19 05:18:51,343 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-11-19 05:18:51,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:18:51,344 INFO L130 BoogieDeclarations]: Found specification of procedure ret_ERANGE [2023-11-19 05:18:51,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ret_ERANGE [2023-11-19 05:18:51,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-19 05:18:51,344 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-11-19 05:18:51,345 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-11-19 05:18:51,345 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2023-11-19 05:18:51,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 05:18:51,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:18:51,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 05:18:51,345 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-19 05:18:51,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:18:51,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 05:18:51,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:18:51,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:18:51,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-19 05:18:51,346 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-19 05:18:51,346 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc [2023-11-19 05:18:51,346 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc [2023-11-19 05:18:51,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-19 05:18:51,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 05:18:51,346 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2023-11-19 05:18:51,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 05:18:51,347 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 05:18:51,347 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 05:18:51,347 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 05:18:51,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:18:51,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 05:18:51,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 05:18:51,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2023-11-19 05:18:51,347 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2023-11-19 05:18:51,348 INFO L130 BoogieDeclarations]: Found specification of procedure bb_ascii_isalnum [2023-11-19 05:18:51,348 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_ascii_isalnum [2023-11-19 05:18:51,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:18:51,348 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc_fgetline [2023-11-19 05:18:51,348 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc_fgetline [2023-11-19 05:18:51,348 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-11-19 05:18:51,348 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-11-19 05:18:51,349 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-11-19 05:18:51,349 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2023-11-19 05:18:51,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:18:51,979 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:18:51,982 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:18:54,921 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:18:55,924 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:18:55,924 INFO L302 CfgBuilder]: Removed 43 assume(true) statements. [2023-11-19 05:18:55,943 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:18:55 BoogieIcfgContainer [2023-11-19 05:18:55,944 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:18:55,949 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:18:55,950 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:18:55,953 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:18:55,954 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:18:47" (1/3) ... [2023-11-19 05:18:55,956 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d4e8b8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:18:55, skipping insertion in model container [2023-11-19 05:18:55,956 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:50" (2/3) ... [2023-11-19 05:18:55,958 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d4e8b8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:18:55, skipping insertion in model container [2023-11-19 05:18:55,959 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:18:55" (3/3) ... [2023-11-19 05:18:55,961 INFO L112 eAbstractionObserver]: Analyzing ICFG uudecode-2.i [2023-11-19 05:18:55,983 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:18:55,984 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 148 error locations. [2023-11-19 05:18:56,097 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:18:56,106 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;@33483058, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:18:56,107 INFO L358 AbstractCegarLoop]: Starting to check reachability of 148 error locations. [2023-11-19 05:18:56,116 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) [2023-11-19 05:18:56,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 05:18:56,125 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:18:56,126 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 05:18:56,126 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)] === [2023-11-19 05:18:56,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:18:56,133 INFO L85 PathProgramCache]: Analyzing trace with hash 2529275, now seen corresponding path program 1 times [2023-11-19 05:18:56,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:18:56,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73711589] [2023-11-19 05:18:56,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:18:56,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:18:56,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:18:56,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:18:56,919 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:18:56,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73711589] [2023-11-19 05:18:56,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73711589] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:18:56,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:18:56,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:18:56,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545835207] [2023-11-19 05:18:56,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:18:56,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:18:56,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:18:56,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:18:56,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:18:56,987 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) [2023-11-19 05:18:57,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:18:57,591 INFO L93 Difference]: Finished difference Result 1388 states and 1902 transitions. [2023-11-19 05:18:57,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:18:57,594 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 [2023-11-19 05:18:57,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:18:57,621 INFO L225 Difference]: With dead ends: 1388 [2023-11-19 05:18:57,621 INFO L226 Difference]: Without dead ends: 684 [2023-11-19 05:18:57,634 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 [2023-11-19 05:18:57,639 INFO L413 NwaCegarLoop]: 787 mSDtfsCounter, 1 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 [2023-11-19 05:18:57,641 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] [2023-11-19 05:18:57,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2023-11-19 05:18:57,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 684. [2023-11-19 05:18:57,757 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) [2023-11-19 05:18:57,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 885 transitions. [2023-11-19 05:18:57,768 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 885 transitions. Word has length 3 [2023-11-19 05:18:57,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:18:57,768 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 885 transitions. [2023-11-19 05:18:57,769 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) [2023-11-19 05:18:57,770 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 885 transitions. [2023-11-19 05:18:57,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 05:18:57,771 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:18:57,772 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 05:18:57,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:18:57,773 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)] === [2023-11-19 05:18:57,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:18:57,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1959300341, now seen corresponding path program 1 times [2023-11-19 05:18:57,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:18:57,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154362858] [2023-11-19 05:18:57,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:18:57,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:18:57,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:18:58,159 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:18:58,159 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:18:58,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154362858] [2023-11-19 05:18:58,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154362858] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:18:58,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962937501] [2023-11-19 05:18:58,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:18:58,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:18:58,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287184cb-a5c0-4bcf-8fd7-cafe6d42b4b1/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:18:58,177 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287184cb-a5c0-4bcf-8fd7-cafe6d42b4b1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:18:58,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287184cb-a5c0-4bcf-8fd7-cafe6d42b4b1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 05:18:58,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:18:58,696 INFO L262 TraceCheckSpWp]: Trace formula consists of 906 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:18:58,703 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:18:58,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:18:58,758 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:18:58,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962937501] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:18:58,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:18:58,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-19 05:18:58,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505246284] [2023-11-19 05:18:58,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:18:58,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:18:58,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:18:58,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:18:58,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:18:58,770 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) [2023-11-19 05:18:59,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:18:59,254 INFO L93 Difference]: Finished difference Result 684 states and 885 transitions. [2023-11-19 05:18:59,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:18:59,255 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 [2023-11-19 05:18:59,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:18:59,260 INFO L225 Difference]: With dead ends: 684 [2023-11-19 05:18:59,260 INFO L226 Difference]: Without dead ends: 683 [2023-11-19 05:18:59,260 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 [2023-11-19 05:18:59,261 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, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 05:18:59,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2349 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 05:18:59,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2023-11-19 05:18:59,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2023-11-19 05:18:59,284 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) [2023-11-19 05:18:59,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 884 transitions. [2023-11-19 05:18:59,289 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 884 transitions. Word has length 6 [2023-11-19 05:18:59,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:18:59,289 INFO L495 AbstractCegarLoop]: Abstraction has 683 states and 884 transitions. [2023-11-19 05:18:59,289 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) [2023-11-19 05:18:59,289 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 884 transitions. [2023-11-19 05:18:59,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 05:18:59,290 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:18:59,290 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2023-11-19 05:18:59,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287184cb-a5c0-4bcf-8fd7-cafe6d42b4b1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 05:18:59,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287184cb-a5c0-4bcf-8fd7-cafe6d42b4b1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:18:59,506 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)] === [2023-11-19 05:18:59,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:18:59,507 INFO L85 PathProgramCache]: Analyzing trace with hash -608767944, now seen corresponding path program 1 times [2023-11-19 05:18:59,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:18:59,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514850823] [2023-11-19 05:18:59,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:18:59,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:18:59,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:18:59,729 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:18:59,730 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:18:59,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514850823] [2023-11-19 05:18:59,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514850823] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:18:59,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:18:59,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:18:59,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383380892] [2023-11-19 05:18:59,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:18:59,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:18:59,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:18:59,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:18:59,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:18:59,733 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) [2023-11-19 05:19:00,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:19:00,088 INFO L93 Difference]: Finished difference Result 683 states and 884 transitions. [2023-11-19 05:19:00,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:19:00,089 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 [2023-11-19 05:19:00,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:19:00,094 INFO L225 Difference]: With dead ends: 683 [2023-11-19 05:19:00,094 INFO L226 Difference]: Without dead ends: 682 [2023-11-19 05:19:00,095 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 [2023-11-19 05:19:00,096 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, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:19:00,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1566 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:19:00,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2023-11-19 05:19:00,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 680. [2023-11-19 05:19:00,119 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) [2023-11-19 05:19:00,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 881 transitions. [2023-11-19 05:19:00,125 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 881 transitions. Word has length 7 [2023-11-19 05:19:00,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:19:00,125 INFO L495 AbstractCegarLoop]: Abstraction has 680 states and 881 transitions. [2023-11-19 05:19:00,125 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) [2023-11-19 05:19:00,126 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 881 transitions. [2023-11-19 05:19:00,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 05:19:00,126 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:19:00,127 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:19:00,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 05:19:00,127 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)] === [2023-11-19 05:19:00,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:19:00,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1312051296, now seen corresponding path program 1 times [2023-11-19 05:19:00,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:19:00,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910703099] [2023-11-19 05:19:00,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:19:00,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:19:00,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:19:00,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:19:00,337 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:19:00,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910703099] [2023-11-19 05:19:00,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910703099] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:19:00,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596789854] [2023-11-19 05:19:00,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:19:00,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:19:00,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287184cb-a5c0-4bcf-8fd7-cafe6d42b4b1/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:19:00,339 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287184cb-a5c0-4bcf-8fd7-cafe6d42b4b1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:19:00,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287184cb-a5c0-4bcf-8fd7-cafe6d42b4b1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 05:19:00,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:19:00,763 INFO L262 TraceCheckSpWp]: Trace formula consists of 922 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:19:00,765 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:19:00,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:19:00,778 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:19:00,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596789854] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:19:00,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:19:00,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 05:19:00,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65814687] [2023-11-19 05:19:00,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:19:00,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:19:00,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:19:00,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:19:00,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:19:00,781 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) [2023-11-19 05:19:01,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:19:01,084 INFO L93 Difference]: Finished difference Result 680 states and 881 transitions. [2023-11-19 05:19:01,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:19:01,085 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 [2023-11-19 05:19:01,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:19:01,090 INFO L225 Difference]: With dead ends: 680 [2023-11-19 05:19:01,090 INFO L226 Difference]: Without dead ends: 678 [2023-11-19 05:19:01,091 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 [2023-11-19 05:19:01,092 INFO L413 NwaCegarLoop]: 776 mSDtfsCounter, 628 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2023-11-19 05:19:01,092 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] [2023-11-19 05:19:01,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2023-11-19 05:19:01,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 678. [2023-11-19 05:19:01,115 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) [2023-11-19 05:19:01,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 879 transitions. [2023-11-19 05:19:01,120 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 879 transitions. Word has length 9 [2023-11-19 05:19:01,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:19:01,121 INFO L495 AbstractCegarLoop]: Abstraction has 678 states and 879 transitions. [2023-11-19 05:19:01,121 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) [2023-11-19 05:19:01,121 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 879 transitions. [2023-11-19 05:19:01,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 05:19:01,122 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:19:01,122 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:19:01,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287184cb-a5c0-4bcf-8fd7-cafe6d42b4b1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 05:19:01,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287184cb-a5c0-4bcf-8fd7-cafe6d42b4b1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:19:01,347 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)] === [2023-11-19 05:19:01,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:19:01,347 INFO L85 PathProgramCache]: Analyzing trace with hash 2018885004, now seen corresponding path program 1 times [2023-11-19 05:19:01,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:19:01,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022996783] [2023-11-19 05:19:01,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:19:01,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:19:01,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:19:01,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:19:01,637 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:19:01,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022996783] [2023-11-19 05:19:01,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022996783] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:19:01,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048858608] [2023-11-19 05:19:01,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:19:01,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:19:01,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287184cb-a5c0-4bcf-8fd7-cafe6d42b4b1/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:19:01,642 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287184cb-a5c0-4bcf-8fd7-cafe6d42b4b1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:19:01,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287184cb-a5c0-4bcf-8fd7-cafe6d42b4b1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 05:19:02,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:19:02,089 INFO L262 TraceCheckSpWp]: Trace formula consists of 923 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:19:02,091 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:19:02,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:19:02,109 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:19:02,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:19:02,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048858608] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:19:02,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [521953842] [2023-11-19 05:19:02,176 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-11-19 05:19:02,176 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:19:02,180 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:19:02,188 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:19:02,188 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs