./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/busybox-1.22.0/od-3.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30e01a73 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_7fafb4d6-740c-442b-9a2a-b6937d05d65e/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fafb4d6-740c-442b-9a2a-b6937d05d65e/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fafb4d6-740c-442b-9a2a-b6937d05d65e/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fafb4d6-740c-442b-9a2a-b6937d05d65e/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/od-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fafb4d6-740c-442b-9a2a-b6937d05d65e/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fafb4d6-740c-442b-9a2a-b6937d05d65e/bin/utaipan-verify-mE87zJ7Ire --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 8a997af929127373cb395687e4393c920ac8d64592c7d6de23ea302f85930f8b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:14:47,164 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:14:47,236 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fafb4d6-740c-442b-9a2a-b6937d05d65e/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-23 21:14:47,243 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:14:47,244 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:14:47,272 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:14:47,273 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:14:47,274 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:14:47,275 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:14:47,276 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:14:47,276 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:14:47,277 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:14:47,277 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:14:47,278 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:14:47,279 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:14:47,279 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:14:47,280 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:14:47,281 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:14:47,281 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:14:47,282 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:14:47,283 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:14:47,285 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:14:47,286 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:14:47,286 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:14:47,286 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:14:47,287 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:14:47,287 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:14:47,288 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:14:47,288 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:14:47,289 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 21:14:47,290 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:14:47,290 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:14:47,294 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:14:47,294 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:14:47,295 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:14:47,295 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:14:47,296 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:14:47,296 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:14:47,297 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:14:47,298 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:14:47,299 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:14:47,299 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:14:47,300 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:14:47,300 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:14:47,301 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:14:47,301 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:14:47,301 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_7fafb4d6-740c-442b-9a2a-b6937d05d65e/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fafb4d6-740c-442b-9a2a-b6937d05d65e/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a997af929127373cb395687e4393c920ac8d64592c7d6de23ea302f85930f8b [2023-11-23 21:14:47,645 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:14:47,689 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:14:47,693 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:14:47,694 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:14:47,696 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:14:47,697 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fafb4d6-740c-442b-9a2a-b6937d05d65e/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/busybox-1.22.0/od-3.i [2023-11-23 21:14:51,028 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:14:51,619 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:14:51,620 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fafb4d6-740c-442b-9a2a-b6937d05d65e/sv-benchmarks/c/busybox-1.22.0/od-3.i [2023-11-23 21:14:51,675 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fafb4d6-740c-442b-9a2a-b6937d05d65e/bin/utaipan-verify-mE87zJ7Ire/data/3420ad59e/9296845655c44098a3bf1a18afc19312/FLAGc5568cdf4 [2023-11-23 21:14:51,695 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fafb4d6-740c-442b-9a2a-b6937d05d65e/bin/utaipan-verify-mE87zJ7Ire/data/3420ad59e/9296845655c44098a3bf1a18afc19312 [2023-11-23 21:14:51,703 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:14:51,705 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:14:51,707 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:14:51,707 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:14:51,714 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:14:51,717 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:14:51" (1/1) ... [2023-11-23 21:14:51,719 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73b2f8fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:51, skipping insertion in model container [2023-11-23 21:14:51,719 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:14:51" (1/1) ... [2023-11-23 21:14:51,850 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:14:54,833 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:14:54,908 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:14:55,277 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:14:55,595 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:14:55,596 WARN L675 CHandler]: The function fopen is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:14:55,596 WARN L675 CHandler]: The function fclose is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:14:55,596 WARN L675 CHandler]: The function format_address is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:14:55,596 WARN L675 CHandler]: The function fseek is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:14:55,597 WARN L675 CHandler]: The function fread is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:14:55,597 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:14:55,597 WARN L675 CHandler]: The function strtoull is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:14:55,597 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:14:55,597 WARN L675 CHandler]: The function ferror is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:14:55,598 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:14:55,598 WARN L675 CHandler]: The function setbuf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:14:55,598 WARN L675 CHandler]: The function putchar is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:14:55,598 WARN L675 CHandler]: The function strtoul is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:14:55,598 WARN L675 CHandler]: The function fputs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:14:55,599 WARN L675 CHandler]: The function fgetc is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:14:55,608 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:14:55,608 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:55 WrapperNode [2023-11-23 21:14:55,608 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:14:55,609 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:14:55,610 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:14:55,610 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:14:55,616 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:55" (1/1) ... [2023-11-23 21:14:55,713 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:55" (1/1) ... [2023-11-23 21:14:55,881 INFO L138 Inliner]: procedures = 692, calls = 1693, calls flagged for inlining = 56, calls inlined = 54, statements flattened = 4647 [2023-11-23 21:14:55,882 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:14:55,883 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:14:55,883 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:14:55,883 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:14:55,895 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:55" (1/1) ... [2023-11-23 21:14:55,895 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:55" (1/1) ... [2023-11-23 21:14:55,948 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:55" (1/1) ... [2023-11-23 21:14:55,949 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:55" (1/1) ... [2023-11-23 21:14:56,205 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:55" (1/1) ... [2023-11-23 21:14:56,259 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:55" (1/1) ... [2023-11-23 21:14:56,304 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:55" (1/1) ... [2023-11-23 21:14:56,333 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:55" (1/1) ... [2023-11-23 21:14:56,369 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:14:56,370 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:14:56,371 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:14:56,371 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:14:56,372 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:55" (1/1) ... [2023-11-23 21:14:56,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:14:56,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fafb4d6-740c-442b-9a2a-b6937d05d65e/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:14:56,413 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fafb4d6-740c-442b-9a2a-b6937d05d65e/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:14:56,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fafb4d6-740c-442b-9a2a-b6937d05d65e/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:14:56,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-23 21:14:56,461 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2023-11-23 21:14:56,462 INFO L130 BoogieDeclarations]: Found specification of procedure open_next_file [2023-11-23 21:14:56,463 INFO L138 BoogieDeclarations]: Found implementation of procedure open_next_file [2023-11-23 21:14:56,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc [2023-11-23 21:14:56,464 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc [2023-11-23 21:14:56,464 INFO L130 BoogieDeclarations]: Found specification of procedure vasprintf [2023-11-23 21:14:56,464 INFO L138 BoogieDeclarations]: Found implementation of procedure vasprintf [2023-11-23 21:14:56,464 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-23 21:14:56,466 INFO L130 BoogieDeclarations]: Found specification of procedure xrealloc [2023-11-23 21:14:56,466 INFO L138 BoogieDeclarations]: Found implementation of procedure xrealloc [2023-11-23 21:14:56,466 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-11-23 21:14:56,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:14:56,469 INFO L130 BoogieDeclarations]: Found specification of procedure bb_strtou [2023-11-23 21:14:56,469 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_strtou [2023-11-23 21:14:56,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2023-11-23 21:14:56,470 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2023-11-23 21:14:56,470 INFO L130 BoogieDeclarations]: Found specification of procedure ret_ERANGE [2023-11-23 21:14:56,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ret_ERANGE [2023-11-23 21:14:56,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 21:14:56,471 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-11-23 21:14:56,472 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-11-23 21:14:56,472 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2023-11-23 21:14:56,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 21:14:56,473 INFO L130 BoogieDeclarations]: Found specification of procedure read_block [2023-11-23 21:14:56,473 INFO L138 BoogieDeclarations]: Found implementation of procedure read_block [2023-11-23 21:14:56,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:14:56,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:14:56,473 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2023-11-23 21:14:56,474 INFO L130 BoogieDeclarations]: Found specification of procedure format_address_std [2023-11-23 21:14:56,474 INFO L138 BoogieDeclarations]: Found implementation of procedure format_address_std [2023-11-23 21:14:56,474 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-23 21:14:56,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:14:56,474 INFO L130 BoogieDeclarations]: Found specification of procedure check_and_close [2023-11-23 21:14:56,475 INFO L138 BoogieDeclarations]: Found implementation of procedure check_and_close [2023-11-23 21:14:56,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:14:56,475 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~VOID [2023-11-23 21:14:56,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~VOID [2023-11-23 21:14:56,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:14:56,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:14:56,476 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-23 21:14:56,476 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-23 21:14:56,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-23 21:14:56,477 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-23 21:14:56,478 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2023-11-23 21:14:56,478 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc [2023-11-23 21:14:56,479 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc [2023-11-23 21:14:56,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 21:14:56,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 21:14:56,481 INFO L130 BoogieDeclarations]: Found specification of procedure decode_format_string [2023-11-23 21:14:56,481 INFO L138 BoogieDeclarations]: Found implementation of procedure decode_format_string [2023-11-23 21:14:56,481 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2023-11-23 21:14:56,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 21:14:56,482 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 21:14:56,482 INFO L130 BoogieDeclarations]: Found specification of procedure fstat [2023-11-23 21:14:56,482 INFO L138 BoogieDeclarations]: Found implementation of procedure fstat [2023-11-23 21:14:56,482 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:14:56,483 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:14:56,483 INFO L130 BoogieDeclarations]: Found specification of procedure parse_old_offset [2023-11-23 21:14:56,483 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_old_offset [2023-11-23 21:14:56,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:14:56,484 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:14:56,484 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2023-11-23 21:14:56,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:14:56,484 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2023-11-23 21:14:56,485 INFO L130 BoogieDeclarations]: Found specification of procedure get_lcm [2023-11-23 21:14:56,485 INFO L138 BoogieDeclarations]: Found implementation of procedure get_lcm [2023-11-23 21:14:56,486 INFO L130 BoogieDeclarations]: Found specification of procedure bb_ascii_isalnum [2023-11-23 21:14:56,486 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_ascii_isalnum [2023-11-23 21:14:56,486 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2023-11-23 21:14:56,487 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2023-11-23 21:14:56,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:14:56,487 INFO L130 BoogieDeclarations]: Found specification of procedure xstrtoull_sfx [2023-11-23 21:14:56,488 INFO L138 BoogieDeclarations]: Found implementation of procedure xstrtoull_sfx [2023-11-23 21:14:56,489 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-11-23 21:14:56,489 INFO L130 BoogieDeclarations]: Found specification of procedure format_address_paren [2023-11-23 21:14:56,489 INFO L138 BoogieDeclarations]: Found implementation of procedure format_address_paren [2023-11-23 21:14:56,490 INFO L130 BoogieDeclarations]: Found specification of procedure xstrtou_range_sfx [2023-11-23 21:14:56,490 INFO L138 BoogieDeclarations]: Found implementation of procedure xstrtou_range_sfx [2023-11-23 21:14:56,490 INFO L130 BoogieDeclarations]: Found specification of procedure write_block [2023-11-23 21:14:56,490 INFO L138 BoogieDeclarations]: Found implementation of procedure write_block [2023-11-23 21:14:56,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2023-11-23 21:14:56,490 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-11-23 21:14:56,491 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-11-23 21:14:56,491 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-11-23 21:14:56,491 INFO L130 BoogieDeclarations]: Found specification of procedure xasprintf [2023-11-23 21:14:56,491 INFO L138 BoogieDeclarations]: Found implementation of procedure xasprintf [2023-11-23 21:14:56,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:14:56,492 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg [2023-11-23 21:14:56,492 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg [2023-11-23 21:14:57,255 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:14:57,258 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:15:02,813 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:15:04,339 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:15:04,340 INFO L309 CfgBuilder]: Removed 54 assume(true) statements. [2023-11-23 21:15:04,342 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:15:04 BoogieIcfgContainer [2023-11-23 21:15:04,342 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:15:04,345 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:15:04,345 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:15:04,348 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:15:04,349 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:14:51" (1/3) ... [2023-11-23 21:15:04,351 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28a7a1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:15:04, skipping insertion in model container [2023-11-23 21:15:04,351 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:55" (2/3) ... [2023-11-23 21:15:04,351 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28a7a1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:15:04, skipping insertion in model container [2023-11-23 21:15:04,351 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:15:04" (3/3) ... [2023-11-23 21:15:04,353 INFO L112 eAbstractionObserver]: Analyzing ICFG od-3.i [2023-11-23 21:15:04,373 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:15:04,374 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 147 error locations. [2023-11-23 21:15:04,448 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:15:04,455 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;@3829523e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:15:04,455 INFO L358 AbstractCegarLoop]: Starting to check reachability of 147 error locations. [2023-11-23 21:15:04,464 INFO L276 IsEmpty]: Start isEmpty. Operand has 1137 states, 798 states have (on average 1.6428571428571428) internal successors, (1311), 1015 states have internal predecessors, (1311), 163 states have call successors, (163), 28 states have call predecessors, (163), 28 states have return successors, (163), 162 states have call predecessors, (163), 163 states have call successors, (163) [2023-11-23 21:15:04,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-23 21:15:04,472 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:04,472 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-23 21:15:04,473 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [write_blockErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 144 more)] === [2023-11-23 21:15:04,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:04,478 INFO L85 PathProgramCache]: Analyzing trace with hash 4476760, now seen corresponding path program 1 times [2023-11-23 21:15:04,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:04,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638301774] [2023-11-23 21:15:04,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:04,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:05,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:05,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:05,432 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:05,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638301774] [2023-11-23 21:15:05,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638301774] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:05,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:05,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:15:05,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112135340] [2023-11-23 21:15:05,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:05,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:15:05,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:05,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:15:05,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:15:05,495 INFO L87 Difference]: Start difference. First operand has 1137 states, 798 states have (on average 1.6428571428571428) internal successors, (1311), 1015 states have internal predecessors, (1311), 163 states have call successors, (163), 28 states have call predecessors, (163), 28 states have return successors, (163), 162 states have call predecessors, (163), 163 states have call successors, (163) 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) [2023-11-23 21:15:06,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:06,907 INFO L93 Difference]: Finished difference Result 2178 states and 3235 transitions. [2023-11-23 21:15:06,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:15:06,914 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 [2023-11-23 21:15:06,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:06,957 INFO L225 Difference]: With dead ends: 2178 [2023-11-23 21:15:06,958 INFO L226 Difference]: Without dead ends: 994 [2023-11-23 21:15:06,982 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 [2023-11-23 21:15:06,986 INFO L413 NwaCegarLoop]: 1241 mSDtfsCounter, 1 mSDsluCounter, 1239 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2480 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:06,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2480 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-23 21:15:07,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2023-11-23 21:15:07,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 994. [2023-11-23 21:15:07,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 994 states, 746 states have (on average 1.497319034852547) internal successors, (1117), 904 states have internal predecessors, (1117), 100 states have call successors, (100), 24 states have call predecessors, (100), 23 states have return successors, (82), 81 states have call predecessors, (82), 82 states have call successors, (82) [2023-11-23 21:15:07,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 994 states to 994 states and 1299 transitions. [2023-11-23 21:15:07,122 INFO L78 Accepts]: Start accepts. Automaton has 994 states and 1299 transitions. Word has length 3 [2023-11-23 21:15:07,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:07,123 INFO L495 AbstractCegarLoop]: Abstraction has 994 states and 1299 transitions. [2023-11-23 21:15:07,123 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) [2023-11-23 21:15:07,123 INFO L276 IsEmpty]: Start isEmpty. Operand 994 states and 1299 transitions. [2023-11-23 21:15:07,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-23 21:15:07,124 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:07,124 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-23 21:15:07,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:15:07,125 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [write_blockErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 144 more)] === [2023-11-23 21:15:07,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:07,125 INFO L85 PathProgramCache]: Analyzing trace with hash 225007877, now seen corresponding path program 1 times [2023-11-23 21:15:07,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:07,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324052198] [2023-11-23 21:15:07,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:07,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:07,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:07,659 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:07,659 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:07,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324052198] [2023-11-23 21:15:07,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324052198] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:15:07,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425717418] [2023-11-23 21:15:07,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:07,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:15:07,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fafb4d6-740c-442b-9a2a-b6937d05d65e/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:15:07,666 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fafb4d6-740c-442b-9a2a-b6937d05d65e/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:15:07,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fafb4d6-740c-442b-9a2a-b6937d05d65e/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:15:08,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:08,487 INFO L262 TraceCheckSpWp]: Trace formula consists of 1914 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:15:08,493 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:15:08,548 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:08,548 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:15:08,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425717418] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:08,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:15:08,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-23 21:15:08,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121337010] [2023-11-23 21:15:08,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:08,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:15:08,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:08,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:15:08,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:15:08,552 INFO L87 Difference]: Start difference. First operand 994 states and 1299 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) [2023-11-23 21:15:10,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:10,407 INFO L93 Difference]: Finished difference Result 994 states and 1299 transitions. [2023-11-23 21:15:10,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:15:10,407 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 [2023-11-23 21:15:10,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:10,418 INFO L225 Difference]: With dead ends: 994 [2023-11-23 21:15:10,418 INFO L226 Difference]: Without dead ends: 993 [2023-11-23 21:15:10,419 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 [2023-11-23 21:15:10,421 INFO L413 NwaCegarLoop]: 1143 mSDtfsCounter, 2 mSDsluCounter, 2286 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3429 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:10,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3429 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-23 21:15:10,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2023-11-23 21:15:10,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 993. [2023-11-23 21:15:10,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 993 states, 746 states have (on average 1.4959785522788205) internal successors, (1116), 903 states have internal predecessors, (1116), 100 states have call successors, (100), 24 states have call predecessors, (100), 23 states have return successors, (82), 81 states have call predecessors, (82), 82 states have call successors, (82) [2023-11-23 21:15:10,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 1298 transitions. [2023-11-23 21:15:10,484 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 1298 transitions. Word has length 6 [2023-11-23 21:15:10,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:10,484 INFO L495 AbstractCegarLoop]: Abstraction has 993 states and 1298 transitions. [2023-11-23 21:15:10,485 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) [2023-11-23 21:15:10,485 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 1298 transitions. [2023-11-23 21:15:10,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-23 21:15:10,485 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:10,486 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2023-11-23 21:15:10,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fafb4d6-740c-442b-9a2a-b6937d05d65e/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:15:10,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fafb4d6-740c-442b-9a2a-b6937d05d65e/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-23 21:15:10,700 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [write_blockErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 144 more)] === [2023-11-23 21:15:10,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:10,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1614688555, now seen corresponding path program 1 times [2023-11-23 21:15:10,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:10,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918004318] [2023-11-23 21:15:10,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:10,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:10,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:11,098 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:15:11,100 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:11,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918004318] [2023-11-23 21:15:11,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918004318] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:11,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:11,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:15:11,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478139446] [2023-11-23 21:15:11,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:11,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:15:11,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:11,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:15:11,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:15:11,103 INFO L87 Difference]: Start difference. First operand 993 states and 1298 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) [2023-11-23 21:15:12,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:12,493 INFO L93 Difference]: Finished difference Result 993 states and 1298 transitions. [2023-11-23 21:15:12,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:15:12,494 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 [2023-11-23 21:15:12,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:12,502 INFO L225 Difference]: With dead ends: 993 [2023-11-23 21:15:12,502 INFO L226 Difference]: Without dead ends: 992 [2023-11-23 21:15:12,503 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 [2023-11-23 21:15:12,504 INFO L413 NwaCegarLoop]: 1143 mSDtfsCounter, 0 mSDsluCounter, 1143 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2286 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:12,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2286 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-23 21:15:12,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2023-11-23 21:15:12,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 990. [2023-11-23 21:15:12,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 990 states, 744 states have (on average 1.4959677419354838) internal successors, (1113), 900 states have internal predecessors, (1113), 100 states have call successors, (100), 24 states have call predecessors, (100), 23 states have return successors, (82), 81 states have call predecessors, (82), 82 states have call successors, (82) [2023-11-23 21:15:12,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1295 transitions. [2023-11-23 21:15:12,550 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1295 transitions. Word has length 7 [2023-11-23 21:15:12,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:12,550 INFO L495 AbstractCegarLoop]: Abstraction has 990 states and 1295 transitions. [2023-11-23 21:15:12,551 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) [2023-11-23 21:15:12,551 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1295 transitions. [2023-11-23 21:15:12,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-23 21:15:12,552 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:12,553 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:15:12,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:15:12,557 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [write_blockErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 144 more)] === [2023-11-23 21:15:12,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:12,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1625925060, now seen corresponding path program 1 times [2023-11-23 21:15:12,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:12,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157200548] [2023-11-23 21:15:12,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:12,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:12,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:12,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:12,976 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:12,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157200548] [2023-11-23 21:15:12,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157200548] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:15:12,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372064435] [2023-11-23 21:15:12,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:12,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:15:12,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fafb4d6-740c-442b-9a2a-b6937d05d65e/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:15:12,979 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fafb4d6-740c-442b-9a2a-b6937d05d65e/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:15:13,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fafb4d6-740c-442b-9a2a-b6937d05d65e/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:15:13,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:13,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 1930 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:15:13,759 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:15:13,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:15:13,780 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:15:13,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372064435] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:13,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:15:13,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-23 21:15:13,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822841271] [2023-11-23 21:15:13,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:13,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:15:13,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:13,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:15:13,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:15:13,782 INFO L87 Difference]: Start difference. First operand 990 states and 1295 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) [2023-11-23 21:15:14,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:14,869 INFO L93 Difference]: Finished difference Result 990 states and 1295 transitions. [2023-11-23 21:15:14,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:15:14,870 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 [2023-11-23 21:15:14,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:14,877 INFO L225 Difference]: With dead ends: 990 [2023-11-23 21:15:14,877 INFO L226 Difference]: Without dead ends: 988 [2023-11-23 21:15:14,878 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 [2023-11-23 21:15:14,879 INFO L413 NwaCegarLoop]: 1136 mSDtfsCounter, 597 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 1706 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:14,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [650 Valid, 1706 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 21:15:14,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2023-11-23 21:15:14,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 988. [2023-11-23 21:15:14,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 988 states, 744 states have (on average 1.493279569892473) internal successors, (1111), 898 states have internal predecessors, (1111), 100 states have call successors, (100), 24 states have call predecessors, (100), 23 states have return successors, (82), 81 states have call predecessors, (82), 82 states have call successors, (82) [2023-11-23 21:15:14,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1293 transitions. [2023-11-23 21:15:14,922 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1293 transitions. Word has length 9 [2023-11-23 21:15:14,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:14,923 INFO L495 AbstractCegarLoop]: Abstraction has 988 states and 1293 transitions. [2023-11-23 21:15:14,924 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) [2023-11-23 21:15:14,924 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1293 transitions. [2023-11-23 21:15:14,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-23 21:15:14,924 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:14,925 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:15:14,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fafb4d6-740c-442b-9a2a-b6937d05d65e/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 21:15:15,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fafb4d6-740c-442b-9a2a-b6937d05d65e/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:15:15,149 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [write_blockErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 144 more)] === [2023-11-23 21:15:15,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:15,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1135928833, now seen corresponding path program 1 times [2023-11-23 21:15:15,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:15,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594608068] [2023-11-23 21:15:15,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:15,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:15,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:15,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:15,579 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:15,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594608068] [2023-11-23 21:15:15,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594608068] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:15:15,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114608276] [2023-11-23 21:15:15,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:15,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:15:15,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fafb4d6-740c-442b-9a2a-b6937d05d65e/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:15:15,581 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fafb4d6-740c-442b-9a2a-b6937d05d65e/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:15:15,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fafb4d6-740c-442b-9a2a-b6937d05d65e/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 21:15:16,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:16,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 1931 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:15:16,351 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:15:16,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:16,370 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:15:16,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:16,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114608276] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:15:16,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [680830254] [2023-11-23 21:15:16,431 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-11-23 21:15:16,431 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:15:16,435 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:15:16,440 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:15:16,441 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs