./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/busybox-1.22.0/od-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35f9c119-3b40-4867-b22f-811dcf3bf841/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35f9c119-3b40-4867-b22f-811dcf3bf841/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_35f9c119-3b40-4867-b22f-811dcf3bf841/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35f9c119-3b40-4867-b22f-811dcf3bf841/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/od-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35f9c119-3b40-4867-b22f-811dcf3bf841/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_35f9c119-3b40-4867-b22f-811dcf3bf841/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 a603c4e0191ce80b259b362c82fa9e96be30ab5d046ca0e524dbb588b300cc8d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:15:35,226 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:15:35,319 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35f9c119-3b40-4867-b22f-811dcf3bf841/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-23 21:15:35,325 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:15:35,325 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:15:35,354 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:15:35,355 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:15:35,355 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:15:35,356 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:15:35,357 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:15:35,357 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:15:35,358 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:15:35,359 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:15:35,359 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:15:35,360 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:15:35,360 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:15:35,361 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:15:35,361 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:15:35,362 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:15:35,363 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:15:35,363 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:15:35,364 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:15:35,365 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:15:35,366 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:15:35,366 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:15:35,367 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:15:35,367 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:15:35,368 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:15:35,369 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:15:35,369 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 21:15:35,370 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:15:35,370 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:15:35,371 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:15:35,371 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:15:35,372 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:15:35,372 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:15:35,373 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:15:35,373 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:15:35,374 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:15:35,374 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:15:35,375 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:15:35,375 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:15:35,376 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:15:35,376 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:15:35,377 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:15:35,377 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:15:35,377 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_35f9c119-3b40-4867-b22f-811dcf3bf841/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35f9c119-3b40-4867-b22f-811dcf3bf841/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a603c4e0191ce80b259b362c82fa9e96be30ab5d046ca0e524dbb588b300cc8d [2023-11-23 21:15:35,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:15:35,698 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:15:35,701 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:15:35,702 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:15:35,703 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:15:35,705 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35f9c119-3b40-4867-b22f-811dcf3bf841/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/busybox-1.22.0/od-2.i [2023-11-23 21:15:38,826 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:15:39,387 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:15:39,388 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35f9c119-3b40-4867-b22f-811dcf3bf841/sv-benchmarks/c/busybox-1.22.0/od-2.i [2023-11-23 21:15:39,428 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35f9c119-3b40-4867-b22f-811dcf3bf841/bin/utaipan-verify-mE87zJ7Ire/data/b39451d40/c95b364625434af1a033956dd5206e81/FLAGa2e151ced [2023-11-23 21:15:39,443 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35f9c119-3b40-4867-b22f-811dcf3bf841/bin/utaipan-verify-mE87zJ7Ire/data/b39451d40/c95b364625434af1a033956dd5206e81 [2023-11-23 21:15:39,446 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:15:39,448 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:15:39,450 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:15:39,450 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:15:39,455 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:15:39,456 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:15:39" (1/1) ... [2023-11-23 21:15:39,457 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54dbbb5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:39, skipping insertion in model container [2023-11-23 21:15:39,458 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:15:39" (1/1) ... [2023-11-23 21:15:39,581 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:15:41,907 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:15:41,958 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:15:42,276 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:15:42,579 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:15:42,579 WARN L675 CHandler]: The function fopen is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:15:42,581 WARN L675 CHandler]: The function fclose is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:15:42,581 WARN L675 CHandler]: The function format_address is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:15:42,582 WARN L675 CHandler]: The function fseek is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:15:42,586 WARN L675 CHandler]: The function fread is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:15:42,587 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:15:42,587 WARN L675 CHandler]: The function strtoull is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:15:42,587 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:15:42,587 WARN L675 CHandler]: The function ferror is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:15:42,587 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:15:42,588 WARN L675 CHandler]: The function setbuf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:15:42,588 WARN L675 CHandler]: The function putchar is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:15:42,588 WARN L675 CHandler]: The function strtoul is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:15:42,589 WARN L675 CHandler]: The function fputs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:15:42,589 WARN L675 CHandler]: The function fgetc is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:15:42,597 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:15:42,597 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:42 WrapperNode [2023-11-23 21:15:42,598 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:15:42,599 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:15:42,600 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:15:42,600 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:15:42,608 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:42" (1/1) ... [2023-11-23 21:15:42,755 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:42" (1/1) ... [2023-11-23 21:15:42,926 INFO L138 Inliner]: procedures = 692, calls = 1684, calls flagged for inlining = 56, calls inlined = 54, statements flattened = 4646 [2023-11-23 21:15:42,927 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:15:42,927 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:15:42,928 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:15:42,928 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:15:42,938 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:42" (1/1) ... [2023-11-23 21:15:42,938 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:42" (1/1) ... [2023-11-23 21:15:42,963 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:42" (1/1) ... [2023-11-23 21:15:42,964 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:42" (1/1) ... [2023-11-23 21:15:43,061 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:42" (1/1) ... [2023-11-23 21:15:43,191 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:42" (1/1) ... [2023-11-23 21:15:43,231 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:42" (1/1) ... [2023-11-23 21:15:43,255 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:42" (1/1) ... [2023-11-23 21:15:43,298 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:15:43,302 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:15:43,302 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:15:43,303 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:15:43,304 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:42" (1/1) ... [2023-11-23 21:15:43,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:15:43,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35f9c119-3b40-4867-b22f-811dcf3bf841/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:15:43,337 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35f9c119-3b40-4867-b22f-811dcf3bf841/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:15:43,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35f9c119-3b40-4867-b22f-811dcf3bf841/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:15:43,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-23 21:15:43,392 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2023-11-23 21:15:43,392 INFO L130 BoogieDeclarations]: Found specification of procedure open_next_file [2023-11-23 21:15:43,393 INFO L138 BoogieDeclarations]: Found implementation of procedure open_next_file [2023-11-23 21:15:43,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc [2023-11-23 21:15:43,393 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc [2023-11-23 21:15:43,393 INFO L130 BoogieDeclarations]: Found specification of procedure vasprintf [2023-11-23 21:15:43,394 INFO L138 BoogieDeclarations]: Found implementation of procedure vasprintf [2023-11-23 21:15:43,394 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-23 21:15:43,395 INFO L130 BoogieDeclarations]: Found specification of procedure xrealloc [2023-11-23 21:15:43,395 INFO L138 BoogieDeclarations]: Found implementation of procedure xrealloc [2023-11-23 21:15:43,395 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-11-23 21:15:43,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:15:43,397 INFO L130 BoogieDeclarations]: Found specification of procedure bb_strtou [2023-11-23 21:15:43,398 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_strtou [2023-11-23 21:15:43,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2023-11-23 21:15:43,398 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2023-11-23 21:15:43,398 INFO L130 BoogieDeclarations]: Found specification of procedure ret_ERANGE [2023-11-23 21:15:43,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ret_ERANGE [2023-11-23 21:15:43,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 21:15:43,399 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-11-23 21:15:43,399 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-11-23 21:15:43,399 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2023-11-23 21:15:43,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 21:15:43,400 INFO L130 BoogieDeclarations]: Found specification of procedure read_block [2023-11-23 21:15:43,400 INFO L138 BoogieDeclarations]: Found implementation of procedure read_block [2023-11-23 21:15:43,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:15:43,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:15:43,400 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2023-11-23 21:15:43,401 INFO L130 BoogieDeclarations]: Found specification of procedure format_address_std [2023-11-23 21:15:43,401 INFO L138 BoogieDeclarations]: Found implementation of procedure format_address_std [2023-11-23 21:15:43,401 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-23 21:15:43,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:15:43,401 INFO L130 BoogieDeclarations]: Found specification of procedure check_and_close [2023-11-23 21:15:43,401 INFO L138 BoogieDeclarations]: Found implementation of procedure check_and_close [2023-11-23 21:15:43,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:15:43,402 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~VOID [2023-11-23 21:15:43,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~VOID [2023-11-23 21:15:43,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:15:43,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:15:43,402 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-23 21:15:43,402 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-23 21:15:43,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-23 21:15:43,403 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-23 21:15:43,403 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2023-11-23 21:15:43,403 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc [2023-11-23 21:15:43,404 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc [2023-11-23 21:15:43,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 21:15:43,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 21:15:43,405 INFO L130 BoogieDeclarations]: Found specification of procedure decode_format_string [2023-11-23 21:15:43,405 INFO L138 BoogieDeclarations]: Found implementation of procedure decode_format_string [2023-11-23 21:15:43,406 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2023-11-23 21:15:43,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 21:15:43,406 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 21:15:43,406 INFO L130 BoogieDeclarations]: Found specification of procedure fstat [2023-11-23 21:15:43,406 INFO L138 BoogieDeclarations]: Found implementation of procedure fstat [2023-11-23 21:15:43,406 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:15:43,406 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:15:43,407 INFO L130 BoogieDeclarations]: Found specification of procedure parse_old_offset [2023-11-23 21:15:43,407 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_old_offset [2023-11-23 21:15:43,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:15:43,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:15:43,408 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2023-11-23 21:15:43,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:15:43,409 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2023-11-23 21:15:43,409 INFO L130 BoogieDeclarations]: Found specification of procedure get_lcm [2023-11-23 21:15:43,409 INFO L138 BoogieDeclarations]: Found implementation of procedure get_lcm [2023-11-23 21:15:43,409 INFO L130 BoogieDeclarations]: Found specification of procedure bb_ascii_isalnum [2023-11-23 21:15:43,409 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_ascii_isalnum [2023-11-23 21:15:43,409 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2023-11-23 21:15:43,410 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2023-11-23 21:15:43,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:15:43,410 INFO L130 BoogieDeclarations]: Found specification of procedure xstrtoull_sfx [2023-11-23 21:15:43,411 INFO L138 BoogieDeclarations]: Found implementation of procedure xstrtoull_sfx [2023-11-23 21:15:43,411 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-11-23 21:15:43,411 INFO L130 BoogieDeclarations]: Found specification of procedure format_address_paren [2023-11-23 21:15:43,411 INFO L138 BoogieDeclarations]: Found implementation of procedure format_address_paren [2023-11-23 21:15:43,471 INFO L130 BoogieDeclarations]: Found specification of procedure xstrtou_range_sfx [2023-11-23 21:15:43,471 INFO L138 BoogieDeclarations]: Found implementation of procedure xstrtou_range_sfx [2023-11-23 21:15:43,471 INFO L130 BoogieDeclarations]: Found specification of procedure write_block [2023-11-23 21:15:43,471 INFO L138 BoogieDeclarations]: Found implementation of procedure write_block [2023-11-23 21:15:43,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2023-11-23 21:15:43,471 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-11-23 21:15:43,471 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-11-23 21:15:43,471 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-11-23 21:15:43,472 INFO L130 BoogieDeclarations]: Found specification of procedure xasprintf [2023-11-23 21:15:43,472 INFO L138 BoogieDeclarations]: Found implementation of procedure xasprintf [2023-11-23 21:15:43,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:15:43,472 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg [2023-11-23 21:15:43,472 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg [2023-11-23 21:15:44,232 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:15:44,235 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:15:49,772 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:15:51,288 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:15:51,289 INFO L309 CfgBuilder]: Removed 54 assume(true) statements. [2023-11-23 21:15:51,291 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:15:51 BoogieIcfgContainer [2023-11-23 21:15:51,291 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:15:51,295 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:15:51,295 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:15:51,298 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:15:51,299 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:15:39" (1/3) ... [2023-11-23 21:15:51,299 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@513633db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:15:51, skipping insertion in model container [2023-11-23 21:15:51,299 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:42" (2/3) ... [2023-11-23 21:15:51,301 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@513633db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:15:51, skipping insertion in model container [2023-11-23 21:15:51,301 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:15:51" (3/3) ... [2023-11-23 21:15:51,303 INFO L112 eAbstractionObserver]: Analyzing ICFG od-2.i [2023-11-23 21:15:51,324 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:15:51,324 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 155 error locations. [2023-11-23 21:15:51,420 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:15:51,432 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;@2db220f7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:15:51,433 INFO L358 AbstractCegarLoop]: Starting to check reachability of 155 error locations. [2023-11-23 21:15:51,445 INFO L276 IsEmpty]: Start isEmpty. Operand has 1153 states, 806 states have (on average 1.6464019851116625) internal successors, (1327), 1031 states have internal predecessors, (1327), 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 21:15:51,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-23 21:15:51,453 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:51,455 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-23 21:15:51,455 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [write_blockErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 152 more)] === [2023-11-23 21:15:51,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:51,465 INFO L85 PathProgramCache]: Analyzing trace with hash 4492648, now seen corresponding path program 1 times [2023-11-23 21:15:51,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:51,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771153917] [2023-11-23 21:15:51,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:51,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:51,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:52,368 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 21:15:52,369 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:52,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771153917] [2023-11-23 21:15:52,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771153917] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:52,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:52,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:15:52,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743325692] [2023-11-23 21:15:52,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:52,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:15:52,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:52,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:15:52,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:15:52,410 INFO L87 Difference]: Start difference. First operand has 1153 states, 806 states have (on average 1.6464019851116625) internal successors, (1327), 1031 states have internal predecessors, (1327), 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 21:15:53,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:53,704 INFO L93 Difference]: Finished difference Result 2210 states and 3267 transitions. [2023-11-23 21:15:53,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:15:53,708 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 21:15:53,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:53,738 INFO L225 Difference]: With dead ends: 2210 [2023-11-23 21:15:53,738 INFO L226 Difference]: Without dead ends: 1010 [2023-11-23 21:15:53,756 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 21:15:53,759 INFO L413 NwaCegarLoop]: 1257 mSDtfsCounter, 1 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2512 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:53,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2512 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 21:15:53,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2023-11-23 21:15:53,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 1010. [2023-11-23 21:15:53,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1010 states, 754 states have (on average 1.5026525198938991) internal successors, (1133), 920 states have internal predecessors, (1133), 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 21:15:53,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1010 states to 1010 states and 1315 transitions. [2023-11-23 21:15:53,897 INFO L78 Accepts]: Start accepts. Automaton has 1010 states and 1315 transitions. Word has length 3 [2023-11-23 21:15:53,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:53,897 INFO L495 AbstractCegarLoop]: Abstraction has 1010 states and 1315 transitions. [2023-11-23 21:15:53,897 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 21:15:53,899 INFO L276 IsEmpty]: Start isEmpty. Operand 1010 states and 1315 transitions. [2023-11-23 21:15:53,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-23 21:15:53,899 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:53,899 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-23 21:15:53,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:15:53,901 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [write_blockErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 152 more)] === [2023-11-23 21:15:53,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:53,901 INFO L85 PathProgramCache]: Analyzing trace with hash 698343173, now seen corresponding path program 1 times [2023-11-23 21:15:53,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:53,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614598967] [2023-11-23 21:15:53,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:53,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:54,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:54,401 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 21:15:54,401 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:54,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614598967] [2023-11-23 21:15:54,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614598967] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:15:54,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795663866] [2023-11-23 21:15:54,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:54,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:15:54,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35f9c119-3b40-4867-b22f-811dcf3bf841/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:15:54,405 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35f9c119-3b40-4867-b22f-811dcf3bf841/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:15:54,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35f9c119-3b40-4867-b22f-811dcf3bf841/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:15:55,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:55,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 1896 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:15:55,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:15:55,246 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 21:15:55,247 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:15:55,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795663866] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:55,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:15:55,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-23 21:15:55,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534252591] [2023-11-23 21:15:55,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:55,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:15:55,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:55,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:15:55,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:15:55,251 INFO L87 Difference]: Start difference. First operand 1010 states and 1315 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 21:15:56,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:56,546 INFO L93 Difference]: Finished difference Result 1010 states and 1315 transitions. [2023-11-23 21:15:56,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:15:56,547 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 21:15:56,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:56,605 INFO L225 Difference]: With dead ends: 1010 [2023-11-23 21:15:56,605 INFO L226 Difference]: Without dead ends: 1009 [2023-11-23 21:15:56,606 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 21:15:56,607 INFO L413 NwaCegarLoop]: 1159 mSDtfsCounter, 3 mSDsluCounter, 1159 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2318 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:56,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2318 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-23 21:15:56,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2023-11-23 21:15:56,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 1009. [2023-11-23 21:15:56,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1009 states, 754 states have (on average 1.5013262599469497) internal successors, (1132), 919 states have internal predecessors, (1132), 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 21:15:56,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1314 transitions. [2023-11-23 21:15:56,662 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1314 transitions. Word has length 6 [2023-11-23 21:15:56,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:56,662 INFO L495 AbstractCegarLoop]: Abstraction has 1009 states and 1314 transitions. [2023-11-23 21:15:56,663 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 21:15:56,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1314 transitions. [2023-11-23 21:15:56,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-23 21:15:56,663 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:56,663 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2023-11-23 21:15:56,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35f9c119-3b40-4867-b22f-811dcf3bf841/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:15:56,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35f9c119-3b40-4867-b22f-811dcf3bf841/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:15:56,877 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [write_blockErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 152 more)] === [2023-11-23 21:15:56,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:56,877 INFO L85 PathProgramCache]: Analyzing trace with hash 173803749, now seen corresponding path program 1 times [2023-11-23 21:15:56,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:56,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16139458] [2023-11-23 21:15:56,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:56,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:57,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:57,253 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 21:15:57,254 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:57,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16139458] [2023-11-23 21:15:57,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16139458] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:57,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:57,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:15:57,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137132011] [2023-11-23 21:15:57,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:57,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:15:57,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:57,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:15:57,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:15:57,256 INFO L87 Difference]: Start difference. First operand 1009 states and 1314 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 21:15:58,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:58,392 INFO L93 Difference]: Finished difference Result 1009 states and 1314 transitions. [2023-11-23 21:15:58,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:15:58,393 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 21:15:58,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:58,401 INFO L225 Difference]: With dead ends: 1009 [2023-11-23 21:15:58,401 INFO L226 Difference]: Without dead ends: 1008 [2023-11-23 21:15:58,402 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 21:15:58,403 INFO L413 NwaCegarLoop]: 1159 mSDtfsCounter, 0 mSDsluCounter, 1159 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2318 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:58,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2318 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 21:15:58,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2023-11-23 21:15:58,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 1006. [2023-11-23 21:15:58,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1006 states, 752 states have (on average 1.5013297872340425) internal successors, (1129), 916 states have internal predecessors, (1129), 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 21:15:58,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 1311 transitions. [2023-11-23 21:15:58,446 INFO L78 Accepts]: Start accepts. Automaton has 1006 states and 1311 transitions. Word has length 7 [2023-11-23 21:15:58,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:58,446 INFO L495 AbstractCegarLoop]: Abstraction has 1006 states and 1311 transitions. [2023-11-23 21:15:58,447 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 21:15:58,447 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 1311 transitions. [2023-11-23 21:15:58,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-23 21:15:58,447 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:58,447 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:15:58,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:15:58,448 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [write_blockErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 152 more)] === [2023-11-23 21:15:58,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:58,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1914855980, now seen corresponding path program 1 times [2023-11-23 21:15:58,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:58,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426146181] [2023-11-23 21:15:58,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:58,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:58,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:58,821 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 21:15:58,822 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:58,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426146181] [2023-11-23 21:15:58,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426146181] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:15:58,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544032332] [2023-11-23 21:15:58,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:58,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:15:58,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35f9c119-3b40-4867-b22f-811dcf3bf841/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:15:58,825 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35f9c119-3b40-4867-b22f-811dcf3bf841/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:15:58,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35f9c119-3b40-4867-b22f-811dcf3bf841/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:15:59,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:59,643 INFO L262 TraceCheckSpWp]: Trace formula consists of 1912 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:15:59,645 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:15:59,660 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 21:15:59,660 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:15:59,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544032332] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:59,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:15:59,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-23 21:15:59,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911726205] [2023-11-23 21:15:59,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:59,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:15:59,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:59,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:15:59,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:15:59,663 INFO L87 Difference]: Start difference. First operand 1006 states and 1311 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 21:16:00,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:16:00,748 INFO L93 Difference]: Finished difference Result 1006 states and 1311 transitions. [2023-11-23 21:16:00,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:16:00,749 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 21:16:00,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:16:00,756 INFO L225 Difference]: With dead ends: 1006 [2023-11-23 21:16:00,756 INFO L226 Difference]: Without dead ends: 1004 [2023-11-23 21:16:00,757 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 21:16:00,758 INFO L413 NwaCegarLoop]: 1152 mSDtfsCounter, 597 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 1738 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 21:16:00,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [650 Valid, 1738 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 21:16:00,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2023-11-23 21:16:00,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 1004. [2023-11-23 21:16:00,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 752 states have (on average 1.4986702127659575) internal successors, (1127), 914 states have internal predecessors, (1127), 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 21:16:00,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1309 transitions. [2023-11-23 21:16:00,805 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1309 transitions. Word has length 9 [2023-11-23 21:16:00,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:16:00,806 INFO L495 AbstractCegarLoop]: Abstraction has 1004 states and 1309 transitions. [2023-11-23 21:16:00,807 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 21:16:00,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1309 transitions. [2023-11-23 21:16:00,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-23 21:16:00,807 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:00,808 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:16:00,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35f9c119-3b40-4867-b22f-811dcf3bf841/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 21:16:01,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35f9c119-3b40-4867-b22f-811dcf3bf841/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:16:01,021 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [write_blockErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 152 more)] === [2023-11-23 21:16:01,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:01,021 INFO L85 PathProgramCache]: Analyzing trace with hash 769008639, now seen corresponding path program 1 times [2023-11-23 21:16:01,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:16:01,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617173224] [2023-11-23 21:16:01,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:01,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:16:01,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:01,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:16:01,336 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:16:01,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617173224] [2023-11-23 21:16:01,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617173224] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:16:01,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849324402] [2023-11-23 21:16:01,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:01,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:16:01,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35f9c119-3b40-4867-b22f-811dcf3bf841/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:16:01,338 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35f9c119-3b40-4867-b22f-811dcf3bf841/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:16:01,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35f9c119-3b40-4867-b22f-811dcf3bf841/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 21:16:02,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:02,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 1913 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:16:02,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:16:02,097 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 21:16:02,097 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:16:02,127 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 21:16:02,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849324402] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:16:02,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2138742544] [2023-11-23 21:16:02,147 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-11-23 21:16:02,147 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:16:02,150 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:16:02,155 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:16:02,156 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs