./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 9bd2c7ff 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_10a6881b-dffe-4acf-901c-80c543c34823/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a6881b-dffe-4acf-901c-80c543c34823/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a6881b-dffe-4acf-901c-80c543c34823/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a6881b-dffe-4acf-901c-80c543c34823/bin/utaipan-verify-t7M7D8N6sZ/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_10a6881b-dffe-4acf-901c-80c543c34823/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a6881b-dffe-4acf-901c-80c543c34823/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a603c4e0191ce80b259b362c82fa9e96be30ab5d046ca0e524dbb588b300cc8d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:14:08,504 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:14:08,589 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a6881b-dffe-4acf-901c-80c543c34823/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-19 04:14:08,596 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:14:08,597 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:14:08,628 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:14:08,629 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:14:08,630 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:14:08,631 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:14:08,631 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:14:08,632 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:14:08,633 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:14:08,633 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:14:08,634 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:14:08,635 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:14:08,635 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:14:08,636 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:14:08,637 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:14:08,637 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:14:08,638 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:14:08,639 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:14:08,640 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:14:08,641 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:14:08,642 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:14:08,642 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:14:08,643 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:14:08,644 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:14:08,645 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:14:08,645 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:14:08,646 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 04:14:08,646 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:14:08,647 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:14:08,648 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:14:08,648 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:14:08,649 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:14:08,649 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:14:08,650 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:14:08,650 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:14:08,651 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:14:08,651 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:14:08,651 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:14:08,652 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:14:08,652 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:14:08,653 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:14:08,653 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_10a6881b-dffe-4acf-901c-80c543c34823/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a6881b-dffe-4acf-901c-80c543c34823/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a603c4e0191ce80b259b362c82fa9e96be30ab5d046ca0e524dbb588b300cc8d [2023-11-19 04:14:08,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:14:09,002 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:14:09,005 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:14:09,007 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:14:09,007 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:14:09,009 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a6881b-dffe-4acf-901c-80c543c34823/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/busybox-1.22.0/od-2.i [2023-11-19 04:14:12,888 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:14:13,600 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:14:13,601 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a6881b-dffe-4acf-901c-80c543c34823/sv-benchmarks/c/busybox-1.22.0/od-2.i [2023-11-19 04:14:13,649 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a6881b-dffe-4acf-901c-80c543c34823/bin/utaipan-verify-t7M7D8N6sZ/data/22b8d06e8/4464434e2c0c4f72b1931e1ba129c441/FLAGef73317e6 [2023-11-19 04:14:13,672 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a6881b-dffe-4acf-901c-80c543c34823/bin/utaipan-verify-t7M7D8N6sZ/data/22b8d06e8/4464434e2c0c4f72b1931e1ba129c441 [2023-11-19 04:14:13,682 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:14:13,685 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:14:13,691 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:14:13,691 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:14:13,699 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:14:13,700 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:14:13" (1/1) ... [2023-11-19 04:14:13,702 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f68be4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:13, skipping insertion in model container [2023-11-19 04:14:13,702 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:14:13" (1/1) ... [2023-11-19 04:14:13,867 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:14:16,812 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:14:16,902 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:14:17,184 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:14:17,584 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:14:17,585 WARN L675 CHandler]: The function fopen is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:14:17,585 WARN L675 CHandler]: The function fclose is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:14:17,585 WARN L675 CHandler]: The function format_address is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:14:17,585 WARN L675 CHandler]: The function fseek is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:14:17,585 WARN L675 CHandler]: The function fread is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:14:17,585 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:14:17,585 WARN L675 CHandler]: The function strtoull is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:14:17,586 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:14:17,586 WARN L675 CHandler]: The function ferror is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:14:17,586 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:14:17,586 WARN L675 CHandler]: The function setbuf is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:14:17,586 WARN L675 CHandler]: The function putchar is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:14:17,586 WARN L675 CHandler]: The function strtoul is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:14:17,586 WARN L675 CHandler]: The function fputs is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:14:17,587 WARN L675 CHandler]: The function fgetc is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:14:17,595 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:14:17,596 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:17 WrapperNode [2023-11-19 04:14:17,596 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:14:17,597 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:14:17,598 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:14:17,598 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:14:17,607 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:17" (1/1) ... [2023-11-19 04:14:17,723 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:17" (1/1) ... [2023-11-19 04:14:17,953 INFO L138 Inliner]: procedures = 692, calls = 1684, calls flagged for inlining = 56, calls inlined = 54, statements flattened = 4646 [2023-11-19 04:14:17,954 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:14:17,955 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:14:17,955 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:14:17,956 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:14:17,966 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:17" (1/1) ... [2023-11-19 04:14:17,967 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:17" (1/1) ... [2023-11-19 04:14:18,020 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:17" (1/1) ... [2023-11-19 04:14:18,021 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:17" (1/1) ... [2023-11-19 04:14:18,153 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:17" (1/1) ... [2023-11-19 04:14:18,205 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:17" (1/1) ... [2023-11-19 04:14:18,235 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:17" (1/1) ... [2023-11-19 04:14:18,264 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:17" (1/1) ... [2023-11-19 04:14:18,306 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:14:18,308 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:14:18,308 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:14:18,310 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:14:18,311 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:17" (1/1) ... [2023-11-19 04:14:18,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:14:18,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a6881b-dffe-4acf-901c-80c543c34823/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:14:18,351 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a6881b-dffe-4acf-901c-80c543c34823/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:14:18,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a6881b-dffe-4acf-901c-80c543c34823/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:14:18,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-19 04:14:18,405 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2023-11-19 04:14:18,406 INFO L130 BoogieDeclarations]: Found specification of procedure open_next_file [2023-11-19 04:14:18,406 INFO L138 BoogieDeclarations]: Found implementation of procedure open_next_file [2023-11-19 04:14:18,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc [2023-11-19 04:14:18,408 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc [2023-11-19 04:14:18,408 INFO L130 BoogieDeclarations]: Found specification of procedure vasprintf [2023-11-19 04:14:18,408 INFO L138 BoogieDeclarations]: Found implementation of procedure vasprintf [2023-11-19 04:14:18,408 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-19 04:14:18,409 INFO L130 BoogieDeclarations]: Found specification of procedure xrealloc [2023-11-19 04:14:18,409 INFO L138 BoogieDeclarations]: Found implementation of procedure xrealloc [2023-11-19 04:14:18,410 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-11-19 04:14:18,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:14:18,411 INFO L130 BoogieDeclarations]: Found specification of procedure bb_strtou [2023-11-19 04:14:18,411 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_strtou [2023-11-19 04:14:18,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2023-11-19 04:14:18,412 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2023-11-19 04:14:18,412 INFO L130 BoogieDeclarations]: Found specification of procedure ret_ERANGE [2023-11-19 04:14:18,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ret_ERANGE [2023-11-19 04:14:18,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-19 04:14:18,414 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-11-19 04:14:18,414 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-11-19 04:14:18,414 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2023-11-19 04:14:18,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 04:14:18,415 INFO L130 BoogieDeclarations]: Found specification of procedure read_block [2023-11-19 04:14:18,416 INFO L138 BoogieDeclarations]: Found implementation of procedure read_block [2023-11-19 04:14:18,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 04:14:18,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 04:14:18,416 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2023-11-19 04:14:18,417 INFO L130 BoogieDeclarations]: Found specification of procedure format_address_std [2023-11-19 04:14:18,417 INFO L138 BoogieDeclarations]: Found implementation of procedure format_address_std [2023-11-19 04:14:18,417 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-19 04:14:18,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:14:18,417 INFO L130 BoogieDeclarations]: Found specification of procedure check_and_close [2023-11-19 04:14:18,418 INFO L138 BoogieDeclarations]: Found implementation of procedure check_and_close [2023-11-19 04:14:18,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 04:14:18,418 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~VOID [2023-11-19 04:14:18,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~VOID [2023-11-19 04:14:18,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:14:18,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:14:18,419 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-19 04:14:18,419 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-19 04:14:18,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-19 04:14:18,419 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-19 04:14:18,420 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2023-11-19 04:14:18,420 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc [2023-11-19 04:14:18,421 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc [2023-11-19 04:14:18,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-19 04:14:18,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 04:14:18,423 INFO L130 BoogieDeclarations]: Found specification of procedure decode_format_string [2023-11-19 04:14:18,423 INFO L138 BoogieDeclarations]: Found implementation of procedure decode_format_string [2023-11-19 04:14:18,424 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2023-11-19 04:14:18,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 04:14:18,424 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 04:14:18,424 INFO L130 BoogieDeclarations]: Found specification of procedure fstat [2023-11-19 04:14:18,424 INFO L138 BoogieDeclarations]: Found implementation of procedure fstat [2023-11-19 04:14:18,425 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 04:14:18,425 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 04:14:18,425 INFO L130 BoogieDeclarations]: Found specification of procedure parse_old_offset [2023-11-19 04:14:18,425 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_old_offset [2023-11-19 04:14:18,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:14:18,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 04:14:18,426 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2023-11-19 04:14:18,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 04:14:18,426 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2023-11-19 04:14:18,427 INFO L130 BoogieDeclarations]: Found specification of procedure get_lcm [2023-11-19 04:14:18,427 INFO L138 BoogieDeclarations]: Found implementation of procedure get_lcm [2023-11-19 04:14:18,427 INFO L130 BoogieDeclarations]: Found specification of procedure bb_ascii_isalnum [2023-11-19 04:14:18,427 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_ascii_isalnum [2023-11-19 04:14:18,427 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2023-11-19 04:14:18,428 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2023-11-19 04:14:18,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 04:14:18,429 INFO L130 BoogieDeclarations]: Found specification of procedure xstrtoull_sfx [2023-11-19 04:14:18,429 INFO L138 BoogieDeclarations]: Found implementation of procedure xstrtoull_sfx [2023-11-19 04:14:18,429 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-11-19 04:14:18,430 INFO L130 BoogieDeclarations]: Found specification of procedure format_address_paren [2023-11-19 04:14:18,430 INFO L138 BoogieDeclarations]: Found implementation of procedure format_address_paren [2023-11-19 04:14:18,431 INFO L130 BoogieDeclarations]: Found specification of procedure xstrtou_range_sfx [2023-11-19 04:14:18,431 INFO L138 BoogieDeclarations]: Found implementation of procedure xstrtou_range_sfx [2023-11-19 04:14:18,431 INFO L130 BoogieDeclarations]: Found specification of procedure write_block [2023-11-19 04:14:18,432 INFO L138 BoogieDeclarations]: Found implementation of procedure write_block [2023-11-19 04:14:18,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2023-11-19 04:14:18,432 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-11-19 04:14:18,432 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-11-19 04:14:18,432 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-11-19 04:14:18,433 INFO L130 BoogieDeclarations]: Found specification of procedure xasprintf [2023-11-19 04:14:18,433 INFO L138 BoogieDeclarations]: Found implementation of procedure xasprintf [2023-11-19 04:14:18,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:14:18,433 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg [2023-11-19 04:14:18,433 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg [2023-11-19 04:14:19,360 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:14:19,367 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:14:26,351 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:14:28,447 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:14:28,447 INFO L302 CfgBuilder]: Removed 54 assume(true) statements. [2023-11-19 04:14:28,467 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:14:28 BoogieIcfgContainer [2023-11-19 04:14:28,468 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:14:28,472 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:14:28,472 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:14:28,476 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:14:28,476 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:14:13" (1/3) ... [2023-11-19 04:14:28,478 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53c58a48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:14:28, skipping insertion in model container [2023-11-19 04:14:28,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:17" (2/3) ... [2023-11-19 04:14:28,479 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53c58a48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:14:28, skipping insertion in model container [2023-11-19 04:14:28,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:14:28" (3/3) ... [2023-11-19 04:14:28,482 INFO L112 eAbstractionObserver]: Analyzing ICFG od-2.i [2023-11-19 04:14:28,507 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:14:28,507 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 155 error locations. [2023-11-19 04:14:28,620 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:14:28,635 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;@39d9e06d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:14:28,636 INFO L358 AbstractCegarLoop]: Starting to check reachability of 155 error locations. [2023-11-19 04:14:28,648 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) [2023-11-19 04:14:28,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 04:14:28,656 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:14:28,657 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 04:14:28,658 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)] === [2023-11-19 04:14:28,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:14:28,664 INFO L85 PathProgramCache]: Analyzing trace with hash 4477272, now seen corresponding path program 1 times [2023-11-19 04:14:28,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:14:28,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731926752] [2023-11-19 04:14:28,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:28,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:14:29,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:14:29,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:14:29,758 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:14:29,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731926752] [2023-11-19 04:14:29,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731926752] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:14:29,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:14:29,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 04:14:29,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385047631] [2023-11-19 04:14:29,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:14:29,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:14:29,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:14:29,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:14:29,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:14:29,836 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) [2023-11-19 04:14:31,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:14:31,366 INFO L93 Difference]: Finished difference Result 2210 states and 3267 transitions. [2023-11-19 04:14:31,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:14:31,370 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-19 04:14:31,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:14:31,402 INFO L225 Difference]: With dead ends: 2210 [2023-11-19 04:14:31,403 INFO L226 Difference]: Without dead ends: 1010 [2023-11-19 04:14:31,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:14:31,436 INFO L413 NwaCegarLoop]: 1257 mSDtfsCounter, 1 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:14:31,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2512 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-19 04:14:31,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2023-11-19 04:14:31,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 1010. [2023-11-19 04:14:31,589 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) [2023-11-19 04:14:31,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1010 states to 1010 states and 1315 transitions. [2023-11-19 04:14:31,608 INFO L78 Accepts]: Start accepts. Automaton has 1010 states and 1315 transitions. Word has length 3 [2023-11-19 04:14:31,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:14:31,608 INFO L495 AbstractCegarLoop]: Abstraction has 1010 states and 1315 transitions. [2023-11-19 04:14:31,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:14:31,611 INFO L276 IsEmpty]: Start isEmpty. Operand 1010 states and 1315 transitions. [2023-11-19 04:14:31,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 04:14:31,611 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:14:31,612 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 04:14:31,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:14:31,612 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)] === [2023-11-19 04:14:31,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:14:31,613 INFO L85 PathProgramCache]: Analyzing trace with hash 240276757, now seen corresponding path program 1 times [2023-11-19 04:14:31,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:14:31,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969270558] [2023-11-19 04:14:31,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:31,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:14:31,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:14:32,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:14:32,155 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:14:32,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969270558] [2023-11-19 04:14:32,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969270558] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:14:32,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720091711] [2023-11-19 04:14:32,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:32,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:14:32,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a6881b-dffe-4acf-901c-80c543c34823/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:14:32,159 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a6881b-dffe-4acf-901c-80c543c34823/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:14:32,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a6881b-dffe-4acf-901c-80c543c34823/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 04:14:33,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:14:33,144 INFO L262 TraceCheckSpWp]: Trace formula consists of 1896 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:14:33,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:14:33,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:14:33,192 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:14:33,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720091711] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:14:33,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:14:33,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-19 04:14:33,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766201068] [2023-11-19 04:14:33,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:14:33,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:14:33,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:14:33,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:14:33,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:14:33,196 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) [2023-11-19 04:14:34,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:14:34,770 INFO L93 Difference]: Finished difference Result 1010 states and 1315 transitions. [2023-11-19 04:14:34,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:14:34,771 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-19 04:14:34,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:14:34,780 INFO L225 Difference]: With dead ends: 1010 [2023-11-19 04:14:34,780 INFO L226 Difference]: Without dead ends: 1009 [2023-11-19 04:14:34,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:14:34,783 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, 1.5s IncrementalHoareTripleChecker+Time [2023-11-19 04:14:34,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2318 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-19 04:14:34,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2023-11-19 04:14:34,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 1009. [2023-11-19 04:14:34,825 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) [2023-11-19 04:14:34,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1314 transitions. [2023-11-19 04:14:34,837 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1314 transitions. Word has length 6 [2023-11-19 04:14:34,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:14:34,837 INFO L495 AbstractCegarLoop]: Abstraction has 1009 states and 1314 transitions. [2023-11-19 04:14:34,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:14:34,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1314 transitions. [2023-11-19 04:14:34,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 04:14:34,838 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:14:34,839 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2023-11-19 04:14:34,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a6881b-dffe-4acf-901c-80c543c34823/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 04:14:35,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a6881b-dffe-4acf-901c-80c543c34823/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:14:35,060 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)] === [2023-11-19 04:14:35,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:14:35,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1141353259, now seen corresponding path program 1 times [2023-11-19 04:14:35,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:14:35,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656203828] [2023-11-19 04:14:35,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:35,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:14:35,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:14:35,518 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:14:35,519 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:14:35,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656203828] [2023-11-19 04:14:35,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656203828] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:14:35,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:14:35,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:14:35,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652240042] [2023-11-19 04:14:35,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:14:35,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:14:35,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:14:35,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:14:35,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:14:35,522 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) [2023-11-19 04:14:37,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:14:37,250 INFO L93 Difference]: Finished difference Result 1009 states and 1314 transitions. [2023-11-19 04:14:37,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:14:37,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-19 04:14:37,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:14:37,260 INFO L225 Difference]: With dead ends: 1009 [2023-11-19 04:14:37,261 INFO L226 Difference]: Without dead ends: 1008 [2023-11-19 04:14:37,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:14:37,263 INFO L413 NwaCegarLoop]: 1159 mSDtfsCounter, 0 mSDsluCounter, 1159 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s 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, 1.7s IncrementalHoareTripleChecker+Time [2023-11-19 04:14:37,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2318 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-19 04:14:37,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2023-11-19 04:14:37,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 1006. [2023-11-19 04:14:37,348 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) [2023-11-19 04:14:37,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 1311 transitions. [2023-11-19 04:14:37,358 INFO L78 Accepts]: Start accepts. Automaton has 1006 states and 1311 transitions. Word has length 7 [2023-11-19 04:14:37,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:14:37,359 INFO L495 AbstractCegarLoop]: Abstraction has 1006 states and 1311 transitions. [2023-11-19 04:14:37,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:14:37,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 1311 transitions. [2023-11-19 04:14:37,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 04:14:37,360 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:14:37,360 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:14:37,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 04:14:37,361 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)] === [2023-11-19 04:14:37,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:14:37,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1234611652, now seen corresponding path program 1 times [2023-11-19 04:14:37,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:14:37,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003734712] [2023-11-19 04:14:37,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:37,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:14:37,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:14:37,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:14:37,877 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:14:37,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003734712] [2023-11-19 04:14:37,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003734712] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:14:37,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228132192] [2023-11-19 04:14:37,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:37,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:14:37,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a6881b-dffe-4acf-901c-80c543c34823/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:14:37,879 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a6881b-dffe-4acf-901c-80c543c34823/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:14:37,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a6881b-dffe-4acf-901c-80c543c34823/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 04:14:38,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:14:38,834 INFO L262 TraceCheckSpWp]: Trace formula consists of 1912 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:14:38,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:14:38,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:14:38,855 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:14:38,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228132192] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:14:38,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:14:38,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 04:14:38,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380945527] [2023-11-19 04:14:38,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:14:38,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:14:38,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:14:38,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:14:38,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:14:38,859 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) [2023-11-19 04:14:40,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:14:40,147 INFO L93 Difference]: Finished difference Result 1006 states and 1311 transitions. [2023-11-19 04:14:40,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:14:40,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2023-11-19 04:14:40,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:14:40,161 INFO L225 Difference]: With dead ends: 1006 [2023-11-19 04:14:40,161 INFO L226 Difference]: Without dead ends: 1004 [2023-11-19 04:14:40,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:14:40,165 INFO L413 NwaCegarLoop]: 1152 mSDtfsCounter, 597 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:14:40,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [650 Valid, 1738 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-19 04:14:40,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2023-11-19 04:14:40,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 1004. [2023-11-19 04:14:40,236 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) [2023-11-19 04:14:40,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1309 transitions. [2023-11-19 04:14:40,249 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1309 transitions. Word has length 9 [2023-11-19 04:14:40,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:14:40,252 INFO L495 AbstractCegarLoop]: Abstraction has 1004 states and 1309 transitions. [2023-11-19 04:14:40,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:14:40,253 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1309 transitions. [2023-11-19 04:14:40,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 04:14:40,253 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:14:40,254 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:14:40,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a6881b-dffe-4acf-901c-80c543c34823/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 04:14:40,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a6881b-dffe-4acf-901c-80c543c34823/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:14:40,468 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)] === [2023-11-19 04:14:40,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:14:40,468 INFO L85 PathProgramCache]: Analyzing trace with hash -381742577, now seen corresponding path program 1 times [2023-11-19 04:14:40,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:14:40,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887317103] [2023-11-19 04:14:40,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:40,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:14:40,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:14:41,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:14:41,075 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:14:41,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887317103] [2023-11-19 04:14:41,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887317103] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:14:41,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244205135] [2023-11-19 04:14:41,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:41,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:14:41,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a6881b-dffe-4acf-901c-80c543c34823/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:14:41,079 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a6881b-dffe-4acf-901c-80c543c34823/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:14:41,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a6881b-dffe-4acf-901c-80c543c34823/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 04:14:42,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:14:42,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 1913 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:14:42,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:14:42,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:14:42,064 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:14:42,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:14:42,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244205135] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:14:42,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [440965810] [2023-11-19 04:14:42,125 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-11-19 04:14:42,125 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:14:42,129 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:14:42,135 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:14:42,136 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs