./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursified_nla-digbench/recursified_geo3-ll2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e8f6167-d993-4a76-9b2d-423d603d3fed/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e8f6167-d993-4a76-9b2d-423d603d3fed/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_8e8f6167-d993-4a76-9b2d-423d603d3fed/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e8f6167-d993-4a76-9b2d-423d603d3fed/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursified_nla-digbench/recursified_geo3-ll2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e8f6167-d993-4a76-9b2d-423d603d3fed/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_8e8f6167-d993-4a76-9b2d-423d603d3fed/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 d611551bdd81171138955e09eec2c35a3c053022d643f86b25023a5ba282a01a --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 07:25:05,870 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 07:25:05,985 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e8f6167-d993-4a76-9b2d-423d603d3fed/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Overflow-32bit-Taipan_Default.epf [2024-11-09 07:25:05,991 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 07:25:05,992 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 07:25:06,041 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 07:25:06,042 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 07:25:06,042 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 07:25:06,043 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 07:25:06,044 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 07:25:06,045 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 07:25:06,045 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 07:25:06,045 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 07:25:06,047 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 07:25:06,048 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 07:25:06,048 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 07:25:06,049 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 07:25:06,053 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 07:25:06,054 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 07:25:06,054 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 07:25:06,054 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 07:25:06,056 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 07:25:06,057 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 07:25:06,057 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 07:25:06,057 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 07:25:06,058 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 07:25:06,058 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 07:25:06,058 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 07:25:06,059 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 07:25:06,059 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 07:25:06,059 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 07:25:06,060 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 07:25:06,061 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 07:25:06,061 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 07:25:06,062 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 07:25:06,062 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 07:25:06,062 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 07:25:06,062 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 07:25:06,063 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 07:25:06,063 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 07:25:06,064 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:25:06,064 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 07:25:06,065 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 07:25:06,065 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 07:25:06,065 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 07:25:06,066 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 07:25:06,066 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 07:25:06,066 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 07:25:06,066 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 07:25:06,066 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_8e8f6167-d993-4a76-9b2d-423d603d3fed/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e8f6167-d993-4a76-9b2d-423d603d3fed/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d611551bdd81171138955e09eec2c35a3c053022d643f86b25023a5ba282a01a [2024-11-09 07:25:06,421 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 07:25:06,452 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 07:25:06,457 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 07:25:06,460 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 07:25:06,460 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 07:25:06,461 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e8f6167-d993-4a76-9b2d-423d603d3fed/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/recursified_nla-digbench/recursified_geo3-ll2.c Unable to find full path for "g++" [2024-11-09 07:25:08,458 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 07:25:08,638 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 07:25:08,638 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e8f6167-d993-4a76-9b2d-423d603d3fed/sv-benchmarks/c/recursified_nla-digbench/recursified_geo3-ll2.c [2024-11-09 07:25:08,647 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e8f6167-d993-4a76-9b2d-423d603d3fed/bin/utaipan-verify-YMUCfTKeje/data/d578142d3/29d38ec5e6eb486e913af232ee3e95cf/FLAG4eca1cd63 [2024-11-09 07:25:09,035 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e8f6167-d993-4a76-9b2d-423d603d3fed/bin/utaipan-verify-YMUCfTKeje/data/d578142d3/29d38ec5e6eb486e913af232ee3e95cf [2024-11-09 07:25:09,041 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 07:25:09,043 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 07:25:09,045 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 07:25:09,046 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 07:25:09,053 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 07:25:09,054 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:25:09" (1/1) ... [2024-11-09 07:25:09,058 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bccea17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:25:09, skipping insertion in model container [2024-11-09 07:25:09,058 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:25:09" (1/1) ... [2024-11-09 07:25:09,082 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 07:25:09,312 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:25:09,324 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 07:25:09,350 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:25:09,370 INFO L204 MainTranslator]: Completed translation [2024-11-09 07:25:09,371 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:25:09 WrapperNode [2024-11-09 07:25:09,371 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 07:25:09,372 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 07:25:09,373 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 07:25:09,373 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 07:25:09,385 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:25:09" (1/1) ... [2024-11-09 07:25:09,398 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:25:09" (1/1) ... [2024-11-09 07:25:09,434 INFO L138 Inliner]: procedures = 16, calls = 67, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 103 [2024-11-09 07:25:09,438 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 07:25:09,439 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 07:25:09,439 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 07:25:09,439 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 07:25:09,451 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:25:09" (1/1) ... [2024-11-09 07:25:09,452 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:25:09" (1/1) ... [2024-11-09 07:25:09,460 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:25:09" (1/1) ... [2024-11-09 07:25:09,460 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:25:09" (1/1) ... [2024-11-09 07:25:09,471 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:25:09" (1/1) ... [2024-11-09 07:25:09,477 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:25:09" (1/1) ... [2024-11-09 07:25:09,479 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:25:09" (1/1) ... [2024-11-09 07:25:09,484 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:25:09" (1/1) ... [2024-11-09 07:25:09,487 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 07:25:09,492 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 07:25:09,492 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 07:25:09,492 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 07:25:09,493 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:25:09" (1/1) ... [2024-11-09 07:25:09,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:25:09,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e8f6167-d993-4a76-9b2d-423d603d3fed/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:25:09,541 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e8f6167-d993-4a76-9b2d-423d603d3fed/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 07:25:09,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e8f6167-d993-4a76-9b2d-423d603d3fed/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 07:25:09,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 07:25:09,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 07:25:09,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 07:25:09,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 07:25:09,585 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_30_to_38_0 [2024-11-09 07:25:09,585 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_30_to_38_0 [2024-11-09 07:25:09,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 07:25:09,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 07:25:09,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 07:25:09,586 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 07:25:09,586 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 07:25:09,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 07:25:09,680 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 07:25:09,682 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 07:25:10,286 INFO L? ?]: Removed 96 outVars from TransFormulas that were not future-live. [2024-11-09 07:25:10,294 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 07:25:10,339 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 07:25:10,340 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 07:25:10,340 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:25:10 BoogieIcfgContainer [2024-11-09 07:25:10,340 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 07:25:10,343 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 07:25:10,343 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 07:25:10,347 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 07:25:10,347 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:25:09" (1/3) ... [2024-11-09 07:25:10,348 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68bcbd4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:25:10, skipping insertion in model container [2024-11-09 07:25:10,348 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:25:09" (2/3) ... [2024-11-09 07:25:10,348 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68bcbd4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:25:10, skipping insertion in model container [2024-11-09 07:25:10,348 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:25:10" (3/3) ... [2024-11-09 07:25:10,350 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_geo3-ll2.c [2024-11-09 07:25:10,369 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 07:25:10,369 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2024-11-09 07:25:10,427 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 07:25:10,433 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;@61f5b2f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 07:25:10,434 INFO L334 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2024-11-09 07:25:10,438 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 39 states have (on average 1.8205128205128205) internal successors, (71), 70 states have internal predecessors, (71), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-09 07:25:10,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2024-11-09 07:25:10,445 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:25:10,446 INFO L215 NwaCegarLoop]: trace histogram [1, 1] [2024-11-09 07:25:10,446 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-09 07:25:10,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:25:10,453 INFO L85 PathProgramCache]: Analyzing trace with hash 4301, now seen corresponding path program 1 times [2024-11-09 07:25:10,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:25:10,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655772834] [2024-11-09 07:25:10,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:25:10,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:25:10,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 07:25:10,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1983462647] [2024-11-09 07:25:10,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:25:10,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:25:10,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e8f6167-d993-4a76-9b2d-423d603d3fed/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:25:10,669 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e8f6167-d993-4a76-9b2d-423d603d3fed/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:25:10,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e8f6167-d993-4a76-9b2d-423d603d3fed/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 07:25:10,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:25:10,834 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-09 07:25:10,842 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:25:11,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:11,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 33 [2024-11-09 07:25:11,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:11,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:11,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:11,202 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2024-11-09 07:25:11,203 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 44 [2024-11-09 07:25:11,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:11,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:11,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:11,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:11,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:11,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:11,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:11,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:11,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:11,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 23 [2024-11-09 07:25:11,329 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-11-09 07:25:11,393 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-11-09 07:25:11,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:11,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 38 [2024-11-09 07:25:11,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:11,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:11,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:11,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:11,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:11,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:11,522 INFO L349 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2024-11-09 07:25:11,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 62 treesize of output 52 [2024-11-09 07:25:11,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:11,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:11,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:11,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:11,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:11,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:11,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:11,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:11,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:11,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:11,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:11,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:11,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:11,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:11,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 9 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 23 [2024-11-09 07:25:11,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:11,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 33 [2024-11-09 07:25:11,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:11,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:11,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:11,769 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2024-11-09 07:25:11,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 44 [2024-11-09 07:25:11,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:11,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:11,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:11,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:11,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:11,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:11,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:11,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:11,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:11,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 23 [2024-11-09 07:25:11,875 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-11-09 07:25:11,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:11,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 33 [2024-11-09 07:25:11,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:11,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:11,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:11,969 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2024-11-09 07:25:11,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 41 [2024-11-09 07:25:11,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:11,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:11,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:11,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:11,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:11,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:12,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:12,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:12,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:12,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 23 [2024-11-09 07:25:12,053 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-11-09 07:25:12,068 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 07:25:12,068 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:25:12,069 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:25:12,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655772834] [2024-11-09 07:25:12,070 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 07:25:12,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983462647] [2024-11-09 07:25:12,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983462647] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:25:12,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:25:12,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 07:25:12,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960501482] [2024-11-09 07:25:12,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:25:12,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:25:12,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:25:12,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:25:12,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:25:12,114 INFO L87 Difference]: Start difference. First operand has 76 states, 39 states have (on average 1.8205128205128205) internal successors, (71), 70 states have internal predecessors, (71), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:25:12,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:25:12,176 INFO L93 Difference]: Finished difference Result 104 states and 107 transitions. [2024-11-09 07:25:12,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:25:12,180 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2024-11-09 07:25:12,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:25:12,194 INFO L225 Difference]: With dead ends: 104 [2024-11-09 07:25:12,194 INFO L226 Difference]: Without dead ends: 71 [2024-11-09 07:25:12,197 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:25:12,203 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 1 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:25:12,204 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 142 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:25:12,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-09 07:25:12,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2024-11-09 07:25:12,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 38 states have (on average 1.736842105263158) internal successors, (66), 66 states have internal predecessors, (66), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 07:25:12,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2024-11-09 07:25:12,257 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 2 [2024-11-09 07:25:12,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:25:12,258 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2024-11-09 07:25:12,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:25:12,258 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2024-11-09 07:25:12,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-09 07:25:12,260 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:25:12,260 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:25:12,283 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e8f6167-d993-4a76-9b2d-423d603d3fed/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 07:25:12,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e8f6167-d993-4a76-9b2d-423d603d3fed/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-09 07:25:12,466 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-09 07:25:12,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:25:12,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1335794297, now seen corresponding path program 1 times [2024-11-09 07:25:12,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:25:12,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409427530] [2024-11-09 07:25:12,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:25:12,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:25:12,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 07:25:12,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1954129202] [2024-11-09 07:25:12,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:25:12,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:25:12,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e8f6167-d993-4a76-9b2d-423d603d3fed/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:25:12,555 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e8f6167-d993-4a76-9b2d-423d603d3fed/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:25:12,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e8f6167-d993-4a76-9b2d-423d603d3fed/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 07:25:12,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:25:12,737 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-09 07:25:12,742 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:25:12,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:12,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:12,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:12,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:12,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:12,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 80 [2024-11-09 07:25:12,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:12,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:12,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:12,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:12,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:12,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:12,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:12,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:12,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:12,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:12,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:12,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:12,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:12,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:12,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:12,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:12,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:12,932 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 15 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 35 [2024-11-09 07:25:12,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:12,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:12,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:12,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:12,989 INFO L349 Elim1Store]: treesize reduction 88, result has 1.1 percent of original size [2024-11-09 07:25:12,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 99 treesize of output 87 [2024-11-09 07:25:13,004 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 20 treesize of output 16 [2024-11-09 07:25:13,014 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 12 treesize of output 11 [2024-11-09 07:25:13,060 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 07:25:13,076 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 07:25:13,077 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 07:25:13,077 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 07:25:13,081 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-11-09 07:25:13,096 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 07:25:13,097 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 07:25:13,098 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 07:25:13,102 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-11-09 07:25:13,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 34 [2024-11-09 07:25:13,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 17 [2024-11-09 07:25:13,470 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 07:25:13,471 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:25:13,471 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:25:13,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409427530] [2024-11-09 07:25:13,471 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 07:25:13,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954129202] [2024-11-09 07:25:13,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954129202] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:25:13,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:25:13,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 07:25:13,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917719579] [2024-11-09 07:25:13,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:25:13,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 07:25:13,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:25:13,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 07:25:13,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-09 07:25:13,475 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand has 8 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:25:14,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:25:14,647 INFO L93 Difference]: Finished difference Result 103 states and 106 transitions. [2024-11-09 07:25:14,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 07:25:14,648 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-09 07:25:14,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:25:14,650 INFO L225 Difference]: With dead ends: 103 [2024-11-09 07:25:14,651 INFO L226 Difference]: Without dead ends: 102 [2024-11-09 07:25:14,652 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-09 07:25:14,655 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 79 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:25:14,655 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 237 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 07:25:14,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-09 07:25:14,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 88. [2024-11-09 07:25:14,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 53 states have (on average 1.7169811320754718) internal successors, (91), 81 states have internal predecessors, (91), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-09 07:25:14,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 100 transitions. [2024-11-09 07:25:14,685 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 100 transitions. Word has length 7 [2024-11-09 07:25:14,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:25:14,686 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 100 transitions. [2024-11-09 07:25:14,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:25:14,686 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 100 transitions. [2024-11-09 07:25:14,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-09 07:25:14,686 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:25:14,687 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:25:14,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e8f6167-d993-4a76-9b2d-423d603d3fed/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 07:25:14,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e8f6167-d993-4a76-9b2d-423d603d3fed/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:25:14,888 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-09 07:25:14,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:25:14,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1540049790, now seen corresponding path program 1 times [2024-11-09 07:25:14,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:25:14,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510055794] [2024-11-09 07:25:14,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:25:14,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:25:15,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 07:25:15,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [657915803] [2024-11-09 07:25:15,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:25:15,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:25:15,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e8f6167-d993-4a76-9b2d-423d603d3fed/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:25:15,057 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e8f6167-d993-4a76-9b2d-423d603d3fed/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:25:15,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e8f6167-d993-4a76-9b2d-423d603d3fed/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 07:25:15,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:25:15,182 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-09 07:25:15,185 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:25:15,228 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 07:25:15,229 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 07:25:15,230 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 07:25:15,236 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-11-09 07:25:15,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:15,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:15,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:15,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:15,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:15,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:15,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:15,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:15,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:15,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:15,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:15,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:15,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:15,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 15 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 94 [2024-11-09 07:25:15,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:15,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:15,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:15,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:15,430 INFO L349 Elim1Store]: treesize reduction 88, result has 1.1 percent of original size [2024-11-09 07:25:15,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 99 treesize of output 87 [2024-11-09 07:25:15,467 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 07:25:15,651 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 07:25:15,652 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 07:25:15,653 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 07:25:15,658 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-11-09 07:25:16,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:16,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:16,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:16,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:16,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:16,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:16,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:16,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:16,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:16,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 18 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 41 [2024-11-09 07:25:16,071 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 12 treesize of output 11 [2024-11-09 07:25:16,077 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 12 treesize of output 1 [2024-11-09 07:25:16,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 15 [2024-11-09 07:25:16,660 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 07:25:16,660 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:25:16,660 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:25:16,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510055794] [2024-11-09 07:25:16,660 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 07:25:16,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657915803] [2024-11-09 07:25:16,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657915803] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:25:16,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:25:16,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 07:25:16,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879059372] [2024-11-09 07:25:16,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:25:16,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 07:25:16,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:25:16,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 07:25:16,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 07:25:16,663 INFO L87 Difference]: Start difference. First operand 88 states and 100 transitions. Second operand has 7 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:25:18,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:25:18,583 INFO L93 Difference]: Finished difference Result 102 states and 105 transitions. [2024-11-09 07:25:18,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 07:25:18,583 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-09 07:25:18,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:25:18,584 INFO L225 Difference]: With dead ends: 102 [2024-11-09 07:25:18,585 INFO L226 Difference]: Without dead ends: 101 [2024-11-09 07:25:18,585 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-09 07:25:18,586 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 75 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-09 07:25:18,587 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 242 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-09 07:25:18,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-09 07:25:18,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 88. [2024-11-09 07:25:18,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 53 states have (on average 1.6981132075471699) internal successors, (90), 81 states have internal predecessors, (90), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-09 07:25:18,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 99 transitions. [2024-11-09 07:25:18,603 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 99 transitions. Word has length 8 [2024-11-09 07:25:18,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:25:18,604 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 99 transitions. [2024-11-09 07:25:18,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:25:18,604 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 99 transitions. [2024-11-09 07:25:18,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-09 07:25:18,605 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:25:18,605 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:25:18,626 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e8f6167-d993-4a76-9b2d-423d603d3fed/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 07:25:18,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e8f6167-d993-4a76-9b2d-423d603d3fed/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-09 07:25:18,810 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_30_to_38_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-09 07:25:18,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:25:18,810 INFO L85 PathProgramCache]: Analyzing trace with hash 496903273, now seen corresponding path program 1 times [2024-11-09 07:25:18,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:25:18,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189319300] [2024-11-09 07:25:18,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:25:18,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:25:18,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 07:25:18,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [786825039] [2024-11-09 07:25:18,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:25:18,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:25:18,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e8f6167-d993-4a76-9b2d-423d603d3fed/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:25:18,866 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e8f6167-d993-4a76-9b2d-423d603d3fed/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:25:18,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e8f6167-d993-4a76-9b2d-423d603d3fed/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 07:25:18,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:25:18,986 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-09 07:25:18,989 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:25:19,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:19,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:19,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:19,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:19,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:19,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:19,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:19,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:19,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 42 [2024-11-09 07:25:19,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:25:19,110 INFO L349 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2024-11-09 07:25:19,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 111 treesize of output 99 [2024-11-09 07:25:19,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 15 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 47 [2024-11-09 07:25:19,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 47 [2024-11-09 07:25:19,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 29 [2024-11-09 07:25:19,590 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 07:25:19,590 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:25:19,590 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:25:19,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189319300] [2024-11-09 07:25:19,591 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 07:25:19,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786825039] [2024-11-09 07:25:19,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786825039] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:25:19,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:25:19,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 07:25:19,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630088272] [2024-11-09 07:25:19,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:25:19,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 07:25:19,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:25:19,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 07:25:19,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-09 07:25:19,595 INFO L87 Difference]: Start difference. First operand 88 states and 99 transitions. Second operand has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:25:20,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:25:20,307 INFO L93 Difference]: Finished difference Result 101 states and 104 transitions. [2024-11-09 07:25:20,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 07:25:20,308 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-09 07:25:20,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:25:20,309 INFO L225 Difference]: With dead ends: 101 [2024-11-09 07:25:20,309 INFO L226 Difference]: Without dead ends: 99 [2024-11-09 07:25:20,309 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-09 07:25:20,310 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 70 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 07:25:20,310 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 315 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 07:25:20,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-09 07:25:20,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 88. [2024-11-09 07:25:20,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 53 states have (on average 1.6603773584905661) internal successors, (88), 81 states have internal predecessors, (88), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-09 07:25:20,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 97 transitions. [2024-11-09 07:25:20,322 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 97 transitions. Word has length 9 [2024-11-09 07:25:20,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:25:20,322 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 97 transitions. [2024-11-09 07:25:20,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:25:20,322 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 97 transitions. [2024-11-09 07:25:20,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-09 07:25:20,323 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:25:20,323 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:25:20,343 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e8f6167-d993-4a76-9b2d-423d603d3fed/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 07:25:20,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e8f6167-d993-4a76-9b2d-423d603d3fed/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:25:20,524 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_30_to_38_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-09 07:25:20,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:25:20,524 INFO L85 PathProgramCache]: Analyzing trace with hash 782676811, now seen corresponding path program 1 times [2024-11-09 07:25:20,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:25:20,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592553447] [2024-11-09 07:25:20,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:25:20,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:25:20,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat