./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursified_nla-digbench/recursified_hard.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e66560-0311-4e54-9128-fd7a6aca5f07/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e66560-0311-4e54-9128-fd7a6aca5f07/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e66560-0311-4e54-9128-fd7a6aca5f07/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e66560-0311-4e54-9128-fd7a6aca5f07/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursified_nla-digbench/recursified_hard.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e66560-0311-4e54-9128-fd7a6aca5f07/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e66560-0311-4e54-9128-fd7a6aca5f07/bin/utaipan-verify-YMUCfTKeje --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 32bit --witnessprinter.graph.data.programhash 55885307ad7991ec619705bd65f9ccb0a7f28b4003909403684402b81add0d87 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 06:03:36,109 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 06:03:36,242 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e66560-0311-4e54-9128-fd7a6aca5f07/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Overflow-32bit-Taipan_Default.epf [2024-11-09 06:03:36,252 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 06:03:36,252 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 06:03:36,304 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 06:03:36,308 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 06:03:36,309 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 06:03:36,310 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 06:03:36,311 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 06:03:36,312 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 06:03:36,313 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 06:03:36,313 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 06:03:36,317 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 06:03:36,318 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 06:03:36,319 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 06:03:36,319 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 06:03:36,320 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 06:03:36,320 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 06:03:36,321 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 06:03:36,321 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 06:03:36,326 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 06:03:36,327 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 06:03:36,328 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 06:03:36,328 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 06:03:36,329 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 06:03:36,329 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 06:03:36,331 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 06:03:36,332 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 06:03:36,333 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 06:03:36,334 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 06:03:36,335 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 06:03:36,336 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 06:03:36,336 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 06:03:36,337 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 06:03:36,337 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 06:03:36,338 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 06:03:36,338 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 06:03:36,339 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 06:03:36,339 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 06:03:36,339 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:03:36,340 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 06:03:36,341 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 06:03:36,341 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 06:03:36,342 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 06:03:36,342 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 06:03:36,343 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 06:03:36,343 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 06:03:36,344 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 06:03:36,344 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_e6e66560-0311-4e54-9128-fd7a6aca5f07/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e66560-0311-4e54-9128-fd7a6aca5f07/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 55885307ad7991ec619705bd65f9ccb0a7f28b4003909403684402b81add0d87 [2024-11-09 06:03:36,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 06:03:36,769 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 06:03:36,773 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 06:03:36,774 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 06:03:36,775 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 06:03:36,777 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e66560-0311-4e54-9128-fd7a6aca5f07/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/recursified_nla-digbench/recursified_hard.c Unable to find full path for "g++" [2024-11-09 06:03:39,169 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 06:03:39,423 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 06:03:39,425 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e66560-0311-4e54-9128-fd7a6aca5f07/sv-benchmarks/c/recursified_nla-digbench/recursified_hard.c [2024-11-09 06:03:39,436 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e66560-0311-4e54-9128-fd7a6aca5f07/bin/utaipan-verify-YMUCfTKeje/data/a31b53b78/19ac5a3df1e840489b141e932d9e54d3/FLAGa560b8043 [2024-11-09 06:03:39,458 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e66560-0311-4e54-9128-fd7a6aca5f07/bin/utaipan-verify-YMUCfTKeje/data/a31b53b78/19ac5a3df1e840489b141e932d9e54d3 [2024-11-09 06:03:39,463 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 06:03:39,464 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 06:03:39,465 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 06:03:39,466 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 06:03:39,474 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 06:03:39,475 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:03:39" (1/1) ... [2024-11-09 06:03:39,476 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62ddce56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:03:39, skipping insertion in model container [2024-11-09 06:03:39,476 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:03:39" (1/1) ... [2024-11-09 06:03:39,508 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 06:03:39,789 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:03:39,807 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 06:03:39,857 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:03:39,884 INFO L204 MainTranslator]: Completed translation [2024-11-09 06:03:39,885 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:03:39 WrapperNode [2024-11-09 06:03:39,885 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 06:03:39,887 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 06:03:39,888 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 06:03:39,888 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 06:03:39,898 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:03:39" (1/1) ... [2024-11-09 06:03:39,912 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:03:39" (1/1) ... [2024-11-09 06:03:39,939 INFO L138 Inliner]: procedures = 17, calls = 92, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 96 [2024-11-09 06:03:39,939 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 06:03:39,940 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 06:03:39,941 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 06:03:39,941 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 06:03:39,953 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:03:39" (1/1) ... [2024-11-09 06:03:39,954 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:03:39" (1/1) ... [2024-11-09 06:03:39,958 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:03:39" (1/1) ... [2024-11-09 06:03:39,958 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:03:39" (1/1) ... [2024-11-09 06:03:39,967 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:03:39" (1/1) ... [2024-11-09 06:03:39,970 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:03:39" (1/1) ... [2024-11-09 06:03:39,972 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:03:39" (1/1) ... [2024-11-09 06:03:39,974 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:03:39" (1/1) ... [2024-11-09 06:03:39,977 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 06:03:39,978 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 06:03:39,978 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 06:03:39,979 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 06:03:39,980 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:03:39" (1/1) ... [2024-11-09 06:03:39,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:03:40,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e66560-0311-4e54-9128-fd7a6aca5f07/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:03:40,021 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e66560-0311-4e54-9128-fd7a6aca5f07/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 06:03:40,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e66560-0311-4e54-9128-fd7a6aca5f07/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 06:03:40,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 06:03:40,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 06:03:40,064 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_41_to_51_0 [2024-11-09 06:03:40,064 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_41_to_51_0 [2024-11-09 06:03:40,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 06:03:40,065 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_31_to_38_0 [2024-11-09 06:03:40,065 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_31_to_38_0 [2024-11-09 06:03:40,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 06:03:40,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 06:03:40,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 06:03:40,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 06:03:40,066 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 06:03:40,066 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 06:03:40,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 06:03:40,253 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 06:03:40,256 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 06:03:40,897 INFO L? ?]: Removed 56 outVars from TransFormulas that were not future-live. [2024-11-09 06:03:40,897 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 06:03:41,029 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 06:03:41,030 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 06:03:41,031 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:03:41 BoogieIcfgContainer [2024-11-09 06:03:41,031 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 06:03:41,034 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 06:03:41,035 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 06:03:41,039 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 06:03:41,040 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:03:39" (1/3) ... [2024-11-09 06:03:41,041 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e305706 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:03:41, skipping insertion in model container [2024-11-09 06:03:41,042 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:03:39" (2/3) ... [2024-11-09 06:03:41,042 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e305706 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:03:41, skipping insertion in model container [2024-11-09 06:03:41,043 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:03:41" (3/3) ... [2024-11-09 06:03:41,045 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_hard.c [2024-11-09 06:03:41,070 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 06:03:41,071 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2024-11-09 06:03:41,158 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:03:41,166 INFO L333 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, 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;@7d3b51c6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:03:41,167 INFO L334 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2024-11-09 06:03:41,172 INFO L276 IsEmpty]: Start isEmpty. Operand has 82 states, 43 states have (on average 1.6744186046511629) internal successors, (72), 69 states have internal predecessors, (72), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-09 06:03:41,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-09 06:03:41,180 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:03:41,181 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:03:41,182 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_41_to_51_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_31_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_31_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-09 06:03:41,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:03:41,189 INFO L85 PathProgramCache]: Analyzing trace with hash -676980882, now seen corresponding path program 1 times [2024-11-09 06:03:41,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:03:41,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508295132] [2024-11-09 06:03:41,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:03:41,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:03:41,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:03:41,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:03:41,535 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:03:41,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508295132] [2024-11-09 06:03:41,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508295132] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:03:41,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:03:41,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 06:03:41,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120364857] [2024-11-09 06:03:41,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:03:41,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 06:03:41,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:03:41,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 06:03:41,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 06:03:41,584 INFO L87 Difference]: Start difference. First operand has 82 states, 43 states have (on average 1.6744186046511629) internal successors, (72), 69 states have internal predecessors, (72), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:03:41,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:03:41,684 INFO L93 Difference]: Finished difference Result 140 states and 161 transitions. [2024-11-09 06:03:41,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 06:03:41,687 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-11-09 06:03:41,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:03:41,713 INFO L225 Difference]: With dead ends: 140 [2024-11-09 06:03:41,713 INFO L226 Difference]: Without dead ends: 77 [2024-11-09 06:03:41,717 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 06:03:41,722 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:03:41,724 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 89 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 06:03:41,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-09 06:03:41,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2024-11-09 06:03:41,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 41 states have (on average 1.6341463414634145) internal successors, (67), 66 states have internal predecessors, (67), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-09 06:03:41,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2024-11-09 06:03:41,789 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 10 [2024-11-09 06:03:41,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:03:41,790 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2024-11-09 06:03:41,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:03:41,791 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2024-11-09 06:03:41,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 06:03:41,792 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:03:41,793 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:03:41,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 06:03:41,794 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_31_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_31_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_31_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-09 06:03:41,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:03:41,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1972310320, now seen corresponding path program 1 times [2024-11-09 06:03:41,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:03:41,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006976404] [2024-11-09 06:03:41,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:03:41,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:03:42,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 06:03:42,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1780311627] [2024-11-09 06:03:42,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:03:42,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:03:42,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e66560-0311-4e54-9128-fd7a6aca5f07/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:03:42,017 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e66560-0311-4e54-9128-fd7a6aca5f07/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:03:42,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e66560-0311-4e54-9128-fd7a6aca5f07/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 06:03:42,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:03:42,241 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-09 06:03:42,252 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:03:42,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:42,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:42,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:42,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:42,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:42,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:42,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:42,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:42,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 60 [2024-11-09 06:03:42,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-09 06:03:42,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:42,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:42,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:42,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:42,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:42,844 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-09 06:03:42,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 33 [2024-11-09 06:03:43,022 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:03:43,024 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:03:43,025 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:03:43,033 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-11-09 06:03:43,055 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:03:43,058 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:03:43,064 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-11-09 06:03:43,116 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:03:43,117 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:03:43,126 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-11-09 06:03:43,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:43,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:43,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:43,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:43,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:43,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:43,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:43,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:43,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 60 [2024-11-09 06:03:43,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:43,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:43,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:43,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:43,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:43,318 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-09 06:03:43,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 33 [2024-11-09 06:03:43,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-09 06:03:43,523 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:03:43,525 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:03:43,527 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:03:43,531 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-11-09 06:03:43,576 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-11-09 06:03:43,603 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-11-09 06:03:43,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:43,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:43,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:43,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:43,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:43,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 91 [2024-11-09 06:03:43,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:43,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:43,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:43,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:43,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:43,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:43,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:43,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:43,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:43,777 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-09 06:03:43,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 33 [2024-11-09 06:03:43,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-09 06:03:44,028 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:03:44,029 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:03:44,030 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:03:44,035 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-11-09 06:03:44,047 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-11-09 06:03:44,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:44,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:44,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:44,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:44,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:44,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 86 [2024-11-09 06:03:44,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:44,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:44,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:44,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:44,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:44,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 63 [2024-11-09 06:03:44,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-09 06:03:44,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:44,412 INFO L349 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2024-11-09 06:03:44,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 72 treesize of output 88 [2024-11-09 06:03:44,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:44,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:44,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:44,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 53 [2024-11-09 06:03:44,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:44,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:44,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:44,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:44,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:44,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 30 [2024-11-09 06:03:44,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-09 06:03:44,519 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:03:44,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 26 [2024-11-09 06:03:44,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:44,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:44,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:44,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:44,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:44,580 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-09 06:03:44,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 33 [2024-11-09 06:03:44,610 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-11-09 06:03:44,625 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-11-09 06:03:44,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:44,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:44,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:44,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:44,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:44,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 86 [2024-11-09 06:03:44,727 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:03:44,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:44,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:44,747 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:03:44,748 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:03:44,753 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-11-09 06:03:44,767 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-11-09 06:03:44,806 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-11-09 06:03:44,817 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:03:44,817 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:03:44,821 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-11-09 06:03:44,840 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-11-09 06:03:44,849 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-11-09 06:03:44,873 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-11-09 06:03:44,885 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-11-09 06:03:44,897 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:03:44,898 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:03:44,899 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:03:44,905 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-11-09 06:03:44,920 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:03:44,921 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:03:44,929 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-11-09 06:03:44,944 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:03:44,945 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:03:44,946 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:03:44,953 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-11-09 06:03:44,960 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:03:44,962 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:03:44,966 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-11-09 06:03:45,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-09 06:03:45,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:03:45,382 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:03:45,383 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:03:45,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006976404] [2024-11-09 06:03:45,384 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 06:03:45,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780311627] [2024-11-09 06:03:45,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780311627] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:03:45,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:03:45,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 06:03:45,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851475728] [2024-11-09 06:03:45,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:03:45,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 06:03:45,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:03:45,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 06:03:45,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:03:45,388 INFO L87 Difference]: Start difference. First operand 77 states and 85 transitions. Second operand has 8 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:03:47,645 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:03:47,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:03:47,955 INFO L93 Difference]: Finished difference Result 133 states and 147 transitions. [2024-11-09 06:03:47,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 06:03:47,959 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 13 [2024-11-09 06:03:47,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:03:47,963 INFO L225 Difference]: With dead ends: 133 [2024-11-09 06:03:47,963 INFO L226 Difference]: Without dead ends: 132 [2024-11-09 06:03:47,963 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-09 06:03:47,965 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 71 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-09 06:03:47,965 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 283 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 176 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2024-11-09 06:03:47,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-09 06:03:47,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 108. [2024-11-09 06:03:47,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 63 states have (on average 1.5555555555555556) internal successors, (98), 88 states have internal predecessors, (98), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (17), 15 states have call predecessors, (17), 15 states have call successors, (17) [2024-11-09 06:03:47,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 130 transitions. [2024-11-09 06:03:47,989 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 130 transitions. Word has length 13 [2024-11-09 06:03:47,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:03:47,994 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 130 transitions. [2024-11-09 06:03:47,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:03:47,995 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 130 transitions. [2024-11-09 06:03:47,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-09 06:03:47,996 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:03:47,996 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:03:48,027 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e66560-0311-4e54-9128-fd7a6aca5f07/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 06:03:48,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e66560-0311-4e54-9128-fd7a6aca5f07/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:03:48,197 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_31_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_31_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_31_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-09 06:03:48,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:03:48,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1012077735, now seen corresponding path program 1 times [2024-11-09 06:03:48,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:03:48,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172160825] [2024-11-09 06:03:48,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:03:48,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:03:48,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 06:03:48,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1960134596] [2024-11-09 06:03:48,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:03:48,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:03:48,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e66560-0311-4e54-9128-fd7a6aca5f07/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:03:48,286 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e66560-0311-4e54-9128-fd7a6aca5f07/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:03:48,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e66560-0311-4e54-9128-fd7a6aca5f07/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 06:03:48,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:03:48,462 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-09 06:03:48,469 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:03:48,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:48,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:48,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:48,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:48,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:48,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:48,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:48,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:48,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:48,668 INFO L349 Elim1Store]: treesize reduction 55, result has 40.9 percent of original size [2024-11-09 06:03:48,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 256 treesize of output 67 [2024-11-09 06:03:48,825 INFO L349 Elim1Store]: treesize reduction 58, result has 28.4 percent of original size [2024-11-09 06:03:48,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 8737 treesize of output 8673 [2024-11-09 06:03:49,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:49,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:49,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:49,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:49,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:49,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:03:49,090 INFO L349 Elim1Store]: treesize reduction 40, result has 40.3 percent of original size [2024-11-09 06:03:49,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 75 treesize of output 94 [2024-11-09 06:03:49,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2024-11-09 06:03:49,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2024-11-09 06:03:50,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-09 06:03:50,687 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:03:50,687 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:03:50,688 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:03:50,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172160825] [2024-11-09 06:03:50,688 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 06:03:50,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960134596] [2024-11-09 06:03:50,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960134596] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:03:50,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:03:50,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 06:03:50,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474464183] [2024-11-09 06:03:50,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:03:50,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 06:03:50,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:03:50,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 06:03:50,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:03:50,690 INFO L87 Difference]: Start difference. First operand 108 states and 130 transitions. Second operand has 8 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:03:51,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:03:51,196 INFO L93 Difference]: Finished difference Result 132 states and 146 transitions. [2024-11-09 06:03:51,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 06:03:51,197 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2024-11-09 06:03:51,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:03:51,199 INFO L225 Difference]: With dead ends: 132 [2024-11-09 06:03:51,199 INFO L226 Difference]: Without dead ends: 131 [2024-11-09 06:03:51,200 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-09 06:03:51,205 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 57 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 06:03:51,206 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 341 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 06:03:51,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-09 06:03:51,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 108. [2024-11-09 06:03:51,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 63 states have (on average 1.5396825396825398) internal successors, (97), 88 states have internal predecessors, (97), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (17), 15 states have call predecessors, (17), 15 states have call successors, (17) [2024-11-09 06:03:51,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 129 transitions. [2024-11-09 06:03:51,239 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 129 transitions. Word has length 14 [2024-11-09 06:03:51,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:03:51,240 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 129 transitions. [2024-11-09 06:03:51,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:03:51,240 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 129 transitions. [2024-11-09 06:03:51,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-09 06:03:51,241 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:03:51,241 INFO L215 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:03:51,269 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e66560-0311-4e54-9128-fd7a6aca5f07/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 06:03:51,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e66560-0311-4e54-9128-fd7a6aca5f07/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-09 06:03:51,442 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_31_to_38_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_31_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_31_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-09 06:03:51,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:03:51,443 INFO L85 PathProgramCache]: Analyzing trace with hash 596502850, now seen corresponding path program 1 times [2024-11-09 06:03:51,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:03:51,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375405544] [2024-11-09 06:03:51,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:03:51,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:03:51,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:03:52,606 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 06:03:52,607 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:03:52,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375405544] [2024-11-09 06:03:52,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375405544] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:03:52,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:03:52,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 06:03:52,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520850941] [2024-11-09 06:03:52,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:03:52,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 06:03:52,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:03:52,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 06:03:52,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:03:52,610 INFO L87 Difference]: Start difference. First operand 108 states and 129 transitions. Second operand has 7 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 06:03:52,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:03:52,970 INFO L93 Difference]: Finished difference Result 112 states and 133 transitions. [2024-11-09 06:03:52,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 06:03:52,972 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 20 [2024-11-09 06:03:52,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:03:52,973 INFO L225 Difference]: With dead ends: 112 [2024-11-09 06:03:52,974 INFO L226 Difference]: Without dead ends: 111 [2024-11-09 06:03:52,974 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-09 06:03:52,979 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 19 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:03:52,979 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 360 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:03:52,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-09 06:03:53,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 109. [2024-11-09 06:03:53,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 64 states have (on average 1.53125) internal successors, (98), 89 states have internal predecessors, (98), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (17), 15 states have call predecessors, (17), 15 states have call successors, (17) [2024-11-09 06:03:53,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 130 transitions. [2024-11-09 06:03:53,012 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 130 transitions. Word has length 20 [2024-11-09 06:03:53,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:03:53,016 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 130 transitions. [2024-11-09 06:03:53,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 06:03:53,016 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 130 transitions. [2024-11-09 06:03:53,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-09 06:03:53,017 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:03:53,017 INFO L215 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:03:53,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 06:03:53,018 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_31_to_38_0Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_31_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_31_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-09 06:03:53,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:03:53,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1311719217, now seen corresponding path program 1 times [2024-11-09 06:03:53,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:03:53,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069578388] [2024-11-09 06:03:53,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:03:53,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:03:53,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 06:03:53,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1318628390] [2024-11-09 06:03:53,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:03:53,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:03:53,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e66560-0311-4e54-9128-fd7a6aca5f07/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:03:53,126 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e66560-0311-4e54-9128-fd7a6aca5f07/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:03:53,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e66560-0311-4e54-9128-fd7a6aca5f07/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 06:03:53,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 06:03:53,293 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 06:03:53,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 06:03:53,413 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-09 06:03:53,417 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 06:03:53,418 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location func_to_recursive_line_31_to_38_0Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 24 remaining) [2024-11-09 06:03:53,420 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location func_to_recursive_line_31_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 24 remaining) [2024-11-09 06:03:53,422 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location func_to_recursive_line_31_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 24 remaining) [2024-11-09 06:03:53,423 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location func_to_recursive_line_31_to_38_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 24 remaining) [2024-11-09 06:03:53,423 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location func_to_recursive_line_31_to_38_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 24 remaining) [2024-11-09 06:03:53,423 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location func_to_recursive_line_31_to_38_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 24 remaining) [2024-11-09 06:03:53,423 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 24 remaining) [2024-11-09 06:03:53,423 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 24 remaining) [2024-11-09 06:03:53,423 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 24 remaining) [2024-11-09 06:03:53,424 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 24 remaining) [2024-11-09 06:03:53,424 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location func_to_recursive_line_41_to_51_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 24 remaining) [2024-11-09 06:03:53,424 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location func_to_recursive_line_41_to_51_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 24 remaining) [2024-11-09 06:03:53,424 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location func_to_recursive_line_41_to_51_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 24 remaining) [2024-11-09 06:03:53,424 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location func_to_recursive_line_41_to_51_0Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 24 remaining) [2024-11-09 06:03:53,425 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location func_to_recursive_line_41_to_51_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 24 remaining) [2024-11-09 06:03:53,425 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location func_to_recursive_line_41_to_51_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 24 remaining) [2024-11-09 06:03:53,425 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location func_to_recursive_line_41_to_51_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 24 remaining) [2024-11-09 06:03:53,425 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location func_to_recursive_line_41_to_51_0Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 24 remaining) [2024-11-09 06:03:53,425 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location func_to_recursive_line_41_to_51_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 24 remaining) [2024-11-09 06:03:53,426 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location func_to_recursive_line_41_to_51_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 24 remaining) [2024-11-09 06:03:53,426 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location func_to_recursive_line_41_to_51_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 24 remaining) [2024-11-09 06:03:53,427 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location func_to_recursive_line_41_to_51_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 24 remaining) [2024-11-09 06:03:53,427 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location func_to_recursive_line_41_to_51_0Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 24 remaining) [2024-11-09 06:03:53,427 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location func_to_recursive_line_41_to_51_0Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 24 remaining) [2024-11-09 06:03:53,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e66560-0311-4e54-9128-fd7a6aca5f07/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 06:03:53,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e66560-0311-4e54-9128-fd7a6aca5f07/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:03:53,634 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-09 06:03:53,687 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 06:03:53,692 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 06:03:53 BoogieIcfgContainer [2024-11-09 06:03:53,692 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 06:03:53,694 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 06:03:53,694 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 06:03:53,694 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 06:03:53,695 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:03:41" (3/4) ... [2024-11-09 06:03:53,696 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-09 06:03:53,813 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e66560-0311-4e54-9128-fd7a6aca5f07/bin/utaipan-verify-YMUCfTKeje/witness.graphml [2024-11-09 06:03:53,813 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 06:03:53,814 INFO L158 Benchmark]: Toolchain (without parser) took 14349.59ms. Allocated memory was 197.1MB in the beginning and 237.0MB in the end (delta: 39.8MB). Free memory was 163.0MB in the beginning and 131.4MB in the end (delta: 31.6MB). Peak memory consumption was 73.9MB. Max. memory is 16.1GB. [2024-11-09 06:03:53,814 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 140.5MB. Free memory is still 81.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 06:03:53,814 INFO L158 Benchmark]: CACSL2BoogieTranslator took 421.18ms. Allocated memory is still 197.1MB. Free memory was 163.0MB in the beginning and 149.8MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-09 06:03:53,815 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.26ms. Allocated memory is still 197.1MB. Free memory was 149.8MB in the beginning and 147.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 06:03:53,815 INFO L158 Benchmark]: Boogie Preprocessor took 36.88ms. Allocated memory is still 197.1MB. Free memory was 147.7MB in the beginning and 146.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 06:03:53,815 INFO L158 Benchmark]: RCFGBuilder took 1052.98ms. Allocated memory is still 197.1MB. Free memory was 146.3MB in the beginning and 116.3MB in the end (delta: 30.0MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-11-09 06:03:53,820 INFO L158 Benchmark]: TraceAbstraction took 12657.49ms. Allocated memory was 197.1MB in the beginning and 237.0MB in the end (delta: 39.8MB). Free memory was 115.5MB in the beginning and 134.6MB in the end (delta: -19.1MB). Peak memory consumption was 21.5MB. Max. memory is 16.1GB. [2024-11-09 06:03:53,820 INFO L158 Benchmark]: Witness Printer took 119.37ms. Allocated memory is still 237.0MB. Free memory was 134.6MB in the beginning and 131.4MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-09 06:03:53,822 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 140.5MB. Free memory is still 81.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 421.18ms. Allocated memory is still 197.1MB. Free memory was 163.0MB in the beginning and 149.8MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.26ms. Allocated memory is still 197.1MB. Free memory was 149.8MB in the beginning and 147.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.88ms. Allocated memory is still 197.1MB. Free memory was 147.7MB in the beginning and 146.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1052.98ms. Allocated memory is still 197.1MB. Free memory was 146.3MB in the beginning and 116.3MB in the end (delta: 30.0MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 12657.49ms. Allocated memory was 197.1MB in the beginning and 237.0MB in the end (delta: 39.8MB). Free memory was 115.5MB in the beginning and 134.6MB in the end (delta: -19.1MB). Peak memory consumption was 21.5MB. Max. memory is 16.1GB. * Witness Printer took 119.37ms. Allocated memory is still 237.0MB. Free memory was 134.6MB in the beginning and 131.4MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 98]: integer overflow possible integer overflow possible We found a FailurePath: [L110] int A; [L111] int B; [L112] int r; [L113] int d; [L114] int p; [L115] int q; [L116] A = __VERIFIER_nondet_int() [L117] B = __VERIFIER_nondet_int() [L118] EXPR \read(B) [L118] CALL assume_abort_if_not(B >= 1) [L26] COND FALSE !(!cond) [L118] RET assume_abort_if_not(B >= 1) [L119] EXPR \read(A) [L119] r = A [L120] EXPR \read(B) [L120] d = B [L121] p = 1 [L122] q = 0 VAL [A={6:0}, B={8:0}, d={4:0}, p={5:0}, q={7:0}, r={9:0}] [L123] CALL func_to_recursive_line_31_to_38_0(&q, &B, &d, &A, &r, &p) VAL [\old(A)={6:0}, \old(B)={8:0}, \old(d)={4:0}, \old(p)={5:0}, \old(q)={7:0}, \old(r)={9:0}] [L88] EXPR \read(*q) VAL [A={6:0}, B={8:0}, \old(A)={6:0}, \old(B)={8:0}, \old(d)={4:0}, \old(p)={5:0}, \old(q)={7:0}, \old(r)={9:0}, d={4:0}, p={5:0}, q={7:0}, r={9:0}] [L88] CALL __VERIFIER_assert((*q) == 0) VAL [\old(cond)=1] [L37] COND FALSE !(!cond) [L88] RET __VERIFIER_assert((*q) == 0) VAL [A={6:0}, B={8:0}, \old(A)={6:0}, \old(B)={8:0}, \old(d)={4:0}, \old(p)={5:0}, \old(q)={7:0}, \old(r)={9:0}, d={4:0}, p={5:0}, q={7:0}, r={9:0}] [L89] EXPR \read(*r) [L89] EXPR \read(*A) VAL [A={6:0}, B={8:0}, \old(A)={6:0}, \old(B)={8:0}, \old(d)={4:0}, \old(p)={5:0}, \old(q)={7:0}, \old(r)={9:0}, d={4:0}, p={5:0}, q={7:0}, r={9:0}] [L89] CALL __VERIFIER_assert((*r) == (*A)) VAL [\old(cond)=1] [L37] COND FALSE !(!cond) [L89] RET __VERIFIER_assert((*r) == (*A)) VAL [A={6:0}, B={8:0}, \old(A)={6:0}, \old(B)={8:0}, \old(d)={4:0}, \old(p)={5:0}, \old(q)={7:0}, \old(r)={9:0}, d={4:0}, p={5:0}, q={7:0}, r={9:0}] [L90] EXPR \read(*d) [L90] EXPR \read(*B) [L90] EXPR \read(*p) VAL [A={6:0}, B={8:0}, \old(A)={6:0}, \old(B)={8:0}, \old(d)={4:0}, \old(p)={5:0}, \old(q)={7:0}, \old(r)={9:0}, d={4:0}, p={5:0}, q={7:0}, r={9:0}] [L90] EXPR (*B) * (*p) VAL [A={6:0}, B={8:0}, \old(A)={6:0}, \old(B)={8:0}, \old(d)={4:0}, \old(p)={5:0}, \old(q)={7:0}, \old(r)={9:0}, d={4:0}, p={5:0}, q={7:0}, r={9:0}] [L90] CALL __VERIFIER_assert((*d) == ((*B) * (*p))) VAL [\old(cond)=1] [L37] COND FALSE !(!cond) [L90] RET __VERIFIER_assert((*d) == ((*B) * (*p))) VAL [A={6:0}, B={8:0}, \old(A)={6:0}, \old(B)={8:0}, \old(d)={4:0}, \old(p)={5:0}, \old(q)={7:0}, \old(r)={9:0}, d={4:0}, p={5:0}, q={7:0}, r={9:0}] [L91] EXPR \read(*r) [L91] EXPR \read(*d) VAL [A={6:0}, B={8:0}, \old(A)={6:0}, \old(B)={8:0}, \old(d)={4:0}, \old(p)={5:0}, \old(q)={7:0}, \old(r)={9:0}, d={4:0}, p={5:0}, q={7:0}, r={9:0}] [L91] COND FALSE !(!((*r) >= (*d))) [L98] EXPR \read(*d) VAL [A={6:0}, B={8:0}, \old(A)={6:0}, \old(B)={8:0}, \old(d)={4:0}, \old(p)={5:0}, \old(q)={7:0}, \old(r)={9:0}, d={4:0}, p={5:0}, q={7:0}, r={9:0}] [L98] 2 * (*d) VAL [A={6:0}, B={8:0}, \old(A)={6:0}, \old(B)={8:0}, \old(d)={4:0}, \old(p)={5:0}, \old(q)={7:0}, \old(r)={9:0}, d={4:0}, p={5:0}, q={7:0}, r={9:0}] - UnprovableResult [Line: 90]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 90]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 98]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 99]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 99]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 125]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 125]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 125]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 125]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 56]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 56]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 56]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 56]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 57]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 57]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 65]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 65]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 66]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 66]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 70]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 70]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 82 locations, 24 error locations. Started 1 CEGAR loops. OverallTime: 12.5s, OverallIterations: 5, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 151 SdHoareTripleChecker+Valid, 3.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 147 mSDsluCounter, 1073 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 793 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 522 IncrementalHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 280 mSDtfsCounter, 522 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 10 SyntacticMatches, 6 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=109occurred in iteration=4, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 49 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 6.5s InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 53 ConstructedInterpolants, 8 QuantifiedInterpolants, 768 SizeOfPredicates, 38 NumberOfNonLiveVariables, 393 ConjunctsInSsa, 102 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 10/10 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-11-09 06:03:53,865 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e66560-0311-4e54-9128-fd7a6aca5f07/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)