./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 0e0057cc 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_3195dc87-4c4f-45e3-a4b5-673869844b8d/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3195dc87-4c4f-45e3-a4b5-673869844b8d/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3195dc87-4c4f-45e3-a4b5-673869844b8d/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3195dc87-4c4f-45e3-a4b5-673869844b8d/bin/utaipan-verify-SwPr7d2a91/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_3195dc87-4c4f-45e3-a4b5-673869844b8d/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3195dc87-4c4f-45e3-a4b5-673869844b8d/bin/utaipan-verify-SwPr7d2a91 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a603c4e0191ce80b259b362c82fa9e96be30ab5d046ca0e524dbb588b300cc8d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:14:11,391 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:14:11,504 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3195dc87-4c4f-45e3-a4b5-673869844b8d/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-24 23:14:11,515 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:14:11,515 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:14:11,562 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:14:11,562 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:14:11,563 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:14:11,564 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:14:11,570 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:14:11,570 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:14:11,571 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:14:11,572 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:14:11,574 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:14:11,574 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:14:11,575 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:14:11,575 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:14:11,576 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:14:11,576 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:14:11,577 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:14:11,578 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:14:11,578 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:14:11,580 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:14:11,580 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:14:11,581 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:14:11,582 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:14:11,582 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:14:11,583 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:14:11,583 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:14:11,584 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-24 23:14:11,585 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:14:11,586 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:14:11,586 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:14:11,586 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:14:11,587 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:14:11,587 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:14:11,588 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:14:11,588 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:14:11,588 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:14:11,589 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:14:11,589 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:14:11,590 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:14:11,590 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:14:11,590 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:14:11,591 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:14:11,591 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:14:11,592 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_3195dc87-4c4f-45e3-a4b5-673869844b8d/bin/utaipan-verify-SwPr7d2a91/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3195dc87-4c4f-45e3-a4b5-673869844b8d/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a603c4e0191ce80b259b362c82fa9e96be30ab5d046ca0e524dbb588b300cc8d [2023-11-24 23:14:11,941 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:14:11,976 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:14:11,979 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:14:11,980 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:14:11,982 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:14:11,985 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3195dc87-4c4f-45e3-a4b5-673869844b8d/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/busybox-1.22.0/od-2.i [2023-11-24 23:14:15,108 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:14:15,855 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:14:15,856 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3195dc87-4c4f-45e3-a4b5-673869844b8d/sv-benchmarks/c/busybox-1.22.0/od-2.i [2023-11-24 23:14:15,908 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3195dc87-4c4f-45e3-a4b5-673869844b8d/bin/utaipan-verify-SwPr7d2a91/data/266b5781a/6e49fa76f8184775a34815ae004413ca/FLAG8475aa7ba [2023-11-24 23:14:15,927 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3195dc87-4c4f-45e3-a4b5-673869844b8d/bin/utaipan-verify-SwPr7d2a91/data/266b5781a/6e49fa76f8184775a34815ae004413ca [2023-11-24 23:14:15,934 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:14:15,936 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:14:15,943 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:14:15,943 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:14:15,949 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:14:15,952 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:14:15" (1/1) ... [2023-11-24 23:14:15,954 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64578ecf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:15, skipping insertion in model container [2023-11-24 23:14:15,954 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:14:15" (1/1) ... [2023-11-24 23:14:16,111 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:14:19,001 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:14:19,057 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:14:19,402 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:14:19,708 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:14:19,709 WARN L675 CHandler]: The function fopen is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:14:19,709 WARN L675 CHandler]: The function fclose is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:14:19,709 WARN L675 CHandler]: The function format_address is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:14:19,709 WARN L675 CHandler]: The function fseek is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:14:19,710 WARN L675 CHandler]: The function fread is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:14:19,710 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:14:19,710 WARN L675 CHandler]: The function strtoull is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:14:19,710 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:14:19,711 WARN L675 CHandler]: The function ferror is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:14:19,711 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:14:19,711 WARN L675 CHandler]: The function setbuf is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:14:19,711 WARN L675 CHandler]: The function putchar is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:14:19,712 WARN L675 CHandler]: The function strtoul is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:14:19,712 WARN L675 CHandler]: The function fputs is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:14:19,712 WARN L675 CHandler]: The function fgetc is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:14:19,720 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:14:19,721 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:19 WrapperNode [2023-11-24 23:14:19,721 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:14:19,723 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:14:19,723 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:14:19,723 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:14:19,731 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:19" (1/1) ... [2023-11-24 23:14:19,826 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:19" (1/1) ... [2023-11-24 23:14:20,032 INFO L138 Inliner]: procedures = 692, calls = 1684, calls flagged for inlining = 56, calls inlined = 54, statements flattened = 4688 [2023-11-24 23:14:20,033 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:14:20,034 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:14:20,034 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:14:20,034 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:14:20,044 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:19" (1/1) ... [2023-11-24 23:14:20,044 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:19" (1/1) ... [2023-11-24 23:14:20,115 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:19" (1/1) ... [2023-11-24 23:14:20,118 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:19" (1/1) ... [2023-11-24 23:14:20,254 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:19" (1/1) ... [2023-11-24 23:14:20,285 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:19" (1/1) ... [2023-11-24 23:14:20,307 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:19" (1/1) ... [2023-11-24 23:14:20,332 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:19" (1/1) ... [2023-11-24 23:14:20,361 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:14:20,362 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:14:20,362 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:14:20,362 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:14:20,363 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:19" (1/1) ... [2023-11-24 23:14:20,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:14:20,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3195dc87-4c4f-45e3-a4b5-673869844b8d/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:14:20,397 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3195dc87-4c4f-45e3-a4b5-673869844b8d/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:14:20,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3195dc87-4c4f-45e3-a4b5-673869844b8d/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:14:20,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-24 23:14:20,453 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2023-11-24 23:14:20,454 INFO L130 BoogieDeclarations]: Found specification of procedure open_next_file [2023-11-24 23:14:20,454 INFO L138 BoogieDeclarations]: Found implementation of procedure open_next_file [2023-11-24 23:14:20,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc [2023-11-24 23:14:20,454 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc [2023-11-24 23:14:20,455 INFO L130 BoogieDeclarations]: Found specification of procedure vasprintf [2023-11-24 23:14:20,455 INFO L138 BoogieDeclarations]: Found implementation of procedure vasprintf [2023-11-24 23:14:20,455 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-24 23:14:20,455 INFO L130 BoogieDeclarations]: Found specification of procedure xrealloc [2023-11-24 23:14:20,455 INFO L138 BoogieDeclarations]: Found implementation of procedure xrealloc [2023-11-24 23:14:20,456 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-11-24 23:14:20,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:14:20,456 INFO L130 BoogieDeclarations]: Found specification of procedure bb_strtou [2023-11-24 23:14:20,456 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_strtou [2023-11-24 23:14:20,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2023-11-24 23:14:20,457 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2023-11-24 23:14:20,457 INFO L130 BoogieDeclarations]: Found specification of procedure ret_ERANGE [2023-11-24 23:14:20,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ret_ERANGE [2023-11-24 23:14:20,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-24 23:14:20,458 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-11-24 23:14:20,458 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-11-24 23:14:20,458 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2023-11-24 23:14:20,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-24 23:14:20,458 INFO L130 BoogieDeclarations]: Found specification of procedure read_block [2023-11-24 23:14:20,459 INFO L138 BoogieDeclarations]: Found implementation of procedure read_block [2023-11-24 23:14:20,459 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:14:20,459 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 23:14:20,459 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2023-11-24 23:14:20,459 INFO L130 BoogieDeclarations]: Found specification of procedure format_address_std [2023-11-24 23:14:20,460 INFO L138 BoogieDeclarations]: Found implementation of procedure format_address_std [2023-11-24 23:14:20,460 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-24 23:14:20,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:14:20,460 INFO L130 BoogieDeclarations]: Found specification of procedure check_and_close [2023-11-24 23:14:20,460 INFO L138 BoogieDeclarations]: Found implementation of procedure check_and_close [2023-11-24 23:14:20,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-24 23:14:20,461 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~VOID [2023-11-24 23:14:20,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~VOID [2023-11-24 23:14:20,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:14:20,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:14:20,462 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-24 23:14:20,462 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-24 23:14:20,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-24 23:14:20,462 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-24 23:14:20,462 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2023-11-24 23:14:20,462 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc [2023-11-24 23:14:20,463 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc [2023-11-24 23:14:20,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-24 23:14:20,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-24 23:14:20,463 INFO L130 BoogieDeclarations]: Found specification of procedure decode_format_string [2023-11-24 23:14:20,463 INFO L138 BoogieDeclarations]: Found implementation of procedure decode_format_string [2023-11-24 23:14:20,464 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2023-11-24 23:14:20,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-24 23:14:20,464 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-24 23:14:20,464 INFO L130 BoogieDeclarations]: Found specification of procedure fstat [2023-11-24 23:14:20,464 INFO L138 BoogieDeclarations]: Found implementation of procedure fstat [2023-11-24 23:14:20,465 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-24 23:14:20,465 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-24 23:14:20,465 INFO L130 BoogieDeclarations]: Found specification of procedure parse_old_offset [2023-11-24 23:14:20,465 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_old_offset [2023-11-24 23:14:20,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:14:20,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-24 23:14:20,466 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2023-11-24 23:14:20,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-24 23:14:20,466 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2023-11-24 23:14:20,466 INFO L130 BoogieDeclarations]: Found specification of procedure get_lcm [2023-11-24 23:14:20,466 INFO L138 BoogieDeclarations]: Found implementation of procedure get_lcm [2023-11-24 23:14:20,467 INFO L130 BoogieDeclarations]: Found specification of procedure bb_ascii_isalnum [2023-11-24 23:14:20,467 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_ascii_isalnum [2023-11-24 23:14:20,467 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2023-11-24 23:14:20,467 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2023-11-24 23:14:20,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:14:20,468 INFO L130 BoogieDeclarations]: Found specification of procedure xstrtoull_sfx [2023-11-24 23:14:20,468 INFO L138 BoogieDeclarations]: Found implementation of procedure xstrtoull_sfx [2023-11-24 23:14:20,468 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-11-24 23:14:20,468 INFO L130 BoogieDeclarations]: Found specification of procedure format_address_paren [2023-11-24 23:14:20,468 INFO L138 BoogieDeclarations]: Found implementation of procedure format_address_paren [2023-11-24 23:14:20,468 INFO L130 BoogieDeclarations]: Found specification of procedure xstrtou_range_sfx [2023-11-24 23:14:20,469 INFO L138 BoogieDeclarations]: Found implementation of procedure xstrtou_range_sfx [2023-11-24 23:14:20,469 INFO L130 BoogieDeclarations]: Found specification of procedure write_block [2023-11-24 23:14:20,469 INFO L138 BoogieDeclarations]: Found implementation of procedure write_block [2023-11-24 23:14:20,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2023-11-24 23:14:20,469 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-11-24 23:14:20,470 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-11-24 23:14:20,470 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-11-24 23:14:20,470 INFO L130 BoogieDeclarations]: Found specification of procedure xasprintf [2023-11-24 23:14:20,470 INFO L138 BoogieDeclarations]: Found implementation of procedure xasprintf [2023-11-24 23:14:20,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:14:20,470 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg [2023-11-24 23:14:20,471 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg [2023-11-24 23:14:21,110 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:14:21,113 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:14:27,024 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:14:28,683 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:14:28,684 INFO L309 CfgBuilder]: Removed 54 assume(true) statements. [2023-11-24 23:14:28,686 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:14:28 BoogieIcfgContainer [2023-11-24 23:14:28,687 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:14:28,691 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:14:28,691 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:14:28,695 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:14:28,696 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:14:15" (1/3) ... [2023-11-24 23:14:28,696 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23d7750f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:14:28, skipping insertion in model container [2023-11-24 23:14:28,697 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:19" (2/3) ... [2023-11-24 23:14:28,698 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23d7750f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:14:28, skipping insertion in model container [2023-11-24 23:14:28,699 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:14:28" (3/3) ... [2023-11-24 23:14:28,700 INFO L112 eAbstractionObserver]: Analyzing ICFG od-2.i [2023-11-24 23:14:28,725 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:14:28,725 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 155 error locations. [2023-11-24 23:14:28,836 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:14:28,847 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;@c358440, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:14:28,848 INFO L358 AbstractCegarLoop]: Starting to check reachability of 155 error locations. [2023-11-24 23:14:28,861 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) [2023-11-24 23:14:28,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-24 23:14:28,869 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:14:28,870 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-24 23:14:28,871 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)] === [2023-11-24 23:14:28,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:14:28,880 INFO L85 PathProgramCache]: Analyzing trace with hash 4492648, now seen corresponding path program 1 times [2023-11-24 23:14:28,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:14:28,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83459810] [2023-11-24 23:14:28,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:14:28,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:14:29,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:14:29,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:14:29,912 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:14:29,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83459810] [2023-11-24 23:14:29,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83459810] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:14:29,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:14:29,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 23:14:29,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17525051] [2023-11-24 23:14:29,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:14:29,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:14:29,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:14:29,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:14:29,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:14:29,974 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) [2023-11-24 23:14:31,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:14:31,667 INFO L93 Difference]: Finished difference Result 2210 states and 3267 transitions. [2023-11-24 23:14:31,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:14:31,673 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 [2023-11-24 23:14:31,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:14:31,714 INFO L225 Difference]: With dead ends: 2210 [2023-11-24 23:14:31,715 INFO L226 Difference]: Without dead ends: 1010 [2023-11-24 23:14:31,737 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 [2023-11-24 23:14:31,742 INFO L413 NwaCegarLoop]: 1257 mSDtfsCounter, 1 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s 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, 1.5s IncrementalHoareTripleChecker+Time [2023-11-24 23:14:31,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2512 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-24 23:14:31,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2023-11-24 23:14:31,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 1010. [2023-11-24 23:14:31,896 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) [2023-11-24 23:14:31,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1010 states to 1010 states and 1315 transitions. [2023-11-24 23:14:31,910 INFO L78 Accepts]: Start accepts. Automaton has 1010 states and 1315 transitions. Word has length 3 [2023-11-24 23:14:31,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:14:31,911 INFO L495 AbstractCegarLoop]: Abstraction has 1010 states and 1315 transitions. [2023-11-24 23:14:31,911 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) [2023-11-24 23:14:31,911 INFO L276 IsEmpty]: Start isEmpty. Operand 1010 states and 1315 transitions. [2023-11-24 23:14:31,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-24 23:14:31,912 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:14:31,912 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-24 23:14:31,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:14:31,913 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)] === [2023-11-24 23:14:31,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:14:31,914 INFO L85 PathProgramCache]: Analyzing trace with hash 698343173, now seen corresponding path program 1 times [2023-11-24 23:14:31,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:14:31,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689506537] [2023-11-24 23:14:31,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:14:31,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:14:32,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:14:32,485 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:14:32,486 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:14:32,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689506537] [2023-11-24 23:14:32,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689506537] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:14:32,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359792348] [2023-11-24 23:14:32,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:14:32,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:14:32,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3195dc87-4c4f-45e3-a4b5-673869844b8d/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:14:32,492 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3195dc87-4c4f-45e3-a4b5-673869844b8d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:14:32,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3195dc87-4c4f-45e3-a4b5-673869844b8d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:14:33,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:14:33,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 1896 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:14:33,490 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:14:33,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:14:33,537 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:14:33,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359792348] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:14:33,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:14:33,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-24 23:14:33,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514397888] [2023-11-24 23:14:33,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:14:33,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:14:33,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:14:33,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:14:33,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:14:33,541 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) [2023-11-24 23:14:35,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:14:35,023 INFO L93 Difference]: Finished difference Result 1010 states and 1315 transitions. [2023-11-24 23:14:35,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:14:35,023 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 [2023-11-24 23:14:35,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:14:35,031 INFO L225 Difference]: With dead ends: 1010 [2023-11-24 23:14:35,031 INFO L226 Difference]: Without dead ends: 1009 [2023-11-24 23:14:35,032 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 [2023-11-24 23:14:35,034 INFO L413 NwaCegarLoop]: 1159 mSDtfsCounter, 3 mSDsluCounter, 1159 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s 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, 1.4s IncrementalHoareTripleChecker+Time [2023-11-24 23:14:35,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2318 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-24 23:14:35,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2023-11-24 23:14:35,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 1009. [2023-11-24 23:14:35,073 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) [2023-11-24 23:14:35,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1314 transitions. [2023-11-24 23:14:35,084 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1314 transitions. Word has length 6 [2023-11-24 23:14:35,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:14:35,085 INFO L495 AbstractCegarLoop]: Abstraction has 1009 states and 1314 transitions. [2023-11-24 23:14:35,085 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) [2023-11-24 23:14:35,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1314 transitions. [2023-11-24 23:14:35,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-24 23:14:35,086 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:14:35,086 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2023-11-24 23:14:35,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3195dc87-4c4f-45e3-a4b5-673869844b8d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 23:14:35,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3195dc87-4c4f-45e3-a4b5-673869844b8d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-24 23:14:35,298 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)] === [2023-11-24 23:14:35,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:14:35,299 INFO L85 PathProgramCache]: Analyzing trace with hash 173803749, now seen corresponding path program 1 times [2023-11-24 23:14:35,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:14:35,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345900665] [2023-11-24 23:14:35,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:14:35,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:14:35,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:14:35,715 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:14:35,715 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:14:35,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345900665] [2023-11-24 23:14:35,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345900665] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:14:35,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:14:35,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:14:35,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873937975] [2023-11-24 23:14:35,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:14:35,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:14:35,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:14:35,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:14:35,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:14:35,719 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) [2023-11-24 23:14:37,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:14:37,083 INFO L93 Difference]: Finished difference Result 1009 states and 1314 transitions. [2023-11-24 23:14:37,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:14:37,084 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 [2023-11-24 23:14:37,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:14:37,091 INFO L225 Difference]: With dead ends: 1009 [2023-11-24 23:14:37,091 INFO L226 Difference]: Without dead ends: 1008 [2023-11-24 23:14:37,092 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 [2023-11-24 23:14:37,093 INFO L413 NwaCegarLoop]: 1159 mSDtfsCounter, 0 mSDsluCounter, 1159 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:14:37,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2318 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-24 23:14:37,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2023-11-24 23:14:37,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 1006. [2023-11-24 23:14:37,125 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) [2023-11-24 23:14:37,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 1311 transitions. [2023-11-24 23:14:37,133 INFO L78 Accepts]: Start accepts. Automaton has 1006 states and 1311 transitions. Word has length 7 [2023-11-24 23:14:37,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:14:37,133 INFO L495 AbstractCegarLoop]: Abstraction has 1006 states and 1311 transitions. [2023-11-24 23:14:37,134 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) [2023-11-24 23:14:37,134 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 1311 transitions. [2023-11-24 23:14:37,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-24 23:14:37,134 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:14:37,134 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:14:37,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 23:14:37,135 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)] === [2023-11-24 23:14:37,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:14:37,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1914855980, now seen corresponding path program 1 times [2023-11-24 23:14:37,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:14:37,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300676577] [2023-11-24 23:14:37,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:14:37,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:14:37,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:14:37,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:14:37,526 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:14:37,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300676577] [2023-11-24 23:14:37,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300676577] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:14:37,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771576972] [2023-11-24 23:14:37,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:14:37,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:14:37,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3195dc87-4c4f-45e3-a4b5-673869844b8d/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:14:37,533 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3195dc87-4c4f-45e3-a4b5-673869844b8d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:14:37,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3195dc87-4c4f-45e3-a4b5-673869844b8d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 23:14:38,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:14:38,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 1912 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:14:38,462 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:14:38,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:14:38,485 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:14:38,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771576972] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:14:38,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:14:38,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-24 23:14:38,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683284557] [2023-11-24 23:14:38,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:14:38,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:14:38,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:14:38,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:14:38,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:14:38,489 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) [2023-11-24 23:14:39,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:14:39,995 INFO L93 Difference]: Finished difference Result 1006 states and 1311 transitions. [2023-11-24 23:14:39,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:14:39,995 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 [2023-11-24 23:14:39,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:14:40,003 INFO L225 Difference]: With dead ends: 1006 [2023-11-24 23:14:40,003 INFO L226 Difference]: Without dead ends: 1004 [2023-11-24 23:14:40,004 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 [2023-11-24 23:14:40,005 INFO L413 NwaCegarLoop]: 1152 mSDtfsCounter, 597 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s 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, 1.4s IncrementalHoareTripleChecker+Time [2023-11-24 23:14:40,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [650 Valid, 1738 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-24 23:14:40,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2023-11-24 23:14:40,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 1004. [2023-11-24 23:14:40,047 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) [2023-11-24 23:14:40,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1309 transitions. [2023-11-24 23:14:40,055 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1309 transitions. Word has length 9 [2023-11-24 23:14:40,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:14:40,057 INFO L495 AbstractCegarLoop]: Abstraction has 1004 states and 1309 transitions. [2023-11-24 23:14:40,057 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) [2023-11-24 23:14:40,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1309 transitions. [2023-11-24 23:14:40,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-24 23:14:40,058 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:14:40,058 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:14:40,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3195dc87-4c4f-45e3-a4b5-673869844b8d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-24 23:14:40,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3195dc87-4c4f-45e3-a4b5-673869844b8d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-24 23:14:40,268 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)] === [2023-11-24 23:14:40,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:14:40,268 INFO L85 PathProgramCache]: Analyzing trace with hash 769008639, now seen corresponding path program 1 times [2023-11-24 23:14:40,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:14:40,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948480601] [2023-11-24 23:14:40,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:14:40,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:14:40,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:14:40,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:14:40,657 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:14:40,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948480601] [2023-11-24 23:14:40,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948480601] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:14:40,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465770410] [2023-11-24 23:14:40,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:14:40,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:14:40,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3195dc87-4c4f-45e3-a4b5-673869844b8d/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:14:40,659 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3195dc87-4c4f-45e3-a4b5-673869844b8d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:14:40,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3195dc87-4c4f-45e3-a4b5-673869844b8d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 23:14:41,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:14:41,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 1913 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:14:41,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:14:41,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:14:41,454 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:14:41,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:14:41,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465770410] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:14:41,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [447801886] [2023-11-24 23:14:41,541 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-11-24 23:14:41,541 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:14:41,544 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:14:41,550 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:14:41,550 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs