./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursified_loop-simple/recursified_nested_5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursified_loop-simple/recursified_nested_5.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c9dfd2bf12e8d041fe6d1d6bf651e6b1ba93f167a26b0485680374a443f598c5 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 11:11:11,893 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 11:11:11,932 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 11:11:11,938 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 11:11:11,940 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 11:11:11,967 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 11:11:11,969 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 11:11:11,969 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 11:11:11,970 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 11:11:11,970 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 11:11:11,971 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 11:11:11,971 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 11:11:11,971 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 11:11:11,972 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 11:11:11,972 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 11:11:11,973 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 11:11:11,976 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 11:11:11,976 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 11:11:11,977 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 11:11:11,977 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 11:11:11,977 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 11:11:11,977 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 11:11:11,977 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 11:11:11,978 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 11:11:11,978 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 11:11:11,978 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 11:11:11,978 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 11:11:11,978 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 11:11:11,979 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 11:11:11,979 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 11:11:11,979 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 11:11:11,979 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 11:11:11,979 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 11:11:11,980 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 11:11:11,980 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 11:11:11,980 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 11:11:11,980 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 11:11:11,980 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 11:11:11,980 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 11:11:11,980 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 11:11:11,981 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 11:11:11,984 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 11:11:11,984 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 11:11:11,985 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 11:11:11,985 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9dfd2bf12e8d041fe6d1d6bf651e6b1ba93f167a26b0485680374a443f598c5 [2024-11-19 11:11:12,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 11:11:12,213 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 11:11:12,219 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 11:11:12,219 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 11:11:12,220 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 11:11:12,220 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_loop-simple/recursified_nested_5.c [2024-11-19 11:11:13,705 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 11:11:13,875 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 11:11:13,875 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_loop-simple/recursified_nested_5.c [2024-11-19 11:11:13,881 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1acd9eaab/e54f0b417bf04f0986c384b6fd7bc7c6/FLAG6e9843485 [2024-11-19 11:11:13,892 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1acd9eaab/e54f0b417bf04f0986c384b6fd7bc7c6 [2024-11-19 11:11:13,894 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 11:11:13,896 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 11:11:13,897 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 11:11:13,897 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 11:11:13,905 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 11:11:13,905 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:11:13" (1/1) ... [2024-11-19 11:11:13,908 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a7f6307 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:13, skipping insertion in model container [2024-11-19 11:11:13,908 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:11:13" (1/1) ... [2024-11-19 11:11:13,925 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 11:11:14,080 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 11:11:14,088 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 11:11:14,113 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 11:11:14,129 INFO L204 MainTranslator]: Completed translation [2024-11-19 11:11:14,129 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:14 WrapperNode [2024-11-19 11:11:14,129 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 11:11:14,130 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 11:11:14,130 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 11:11:14,131 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 11:11:14,136 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:14" (1/1) ... [2024-11-19 11:11:14,144 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:14" (1/1) ... [2024-11-19 11:11:14,160 INFO L138 Inliner]: procedures = 16, calls = 63, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 81 [2024-11-19 11:11:14,160 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 11:11:14,161 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 11:11:14,161 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 11:11:14,161 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 11:11:14,171 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:14" (1/1) ... [2024-11-19 11:11:14,171 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:14" (1/1) ... [2024-11-19 11:11:14,173 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:14" (1/1) ... [2024-11-19 11:11:14,197 INFO L175 MemorySlicer]: Split 32 memory accesses to 6 slices as follows [2, 6, 6, 6, 6, 6]. 19 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 1, 1, 1, 1, 1]. The 10 writes are split as follows [0, 2, 2, 2, 2, 2]. [2024-11-19 11:11:14,198 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:14" (1/1) ... [2024-11-19 11:11:14,198 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:14" (1/1) ... [2024-11-19 11:11:14,207 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:14" (1/1) ... [2024-11-19 11:11:14,209 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:14" (1/1) ... [2024-11-19 11:11:14,214 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:14" (1/1) ... [2024-11-19 11:11:14,215 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:14" (1/1) ... [2024-11-19 11:11:14,217 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 11:11:14,218 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 11:11:14,218 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 11:11:14,222 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 11:11:14,223 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:14" (1/1) ... [2024-11-19 11:11:14,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 11:11:14,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:11:14,254 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 11:11:14,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 11:11:14,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 11:11:14,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 11:11:14,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 11:11:14,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 11:11:14,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-19 11:11:14,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-19 11:11:14,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-19 11:11:14,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-19 11:11:14,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 11:11:14,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 11:11:14,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-19 11:11:14,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-19 11:11:14,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-19 11:11:14,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-19 11:11:14,306 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_24_to_25_0 [2024-11-19 11:11:14,306 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_24_to_25_0 [2024-11-19 11:11:14,306 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_23_to_24_0 [2024-11-19 11:11:14,306 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_23_to_24_0 [2024-11-19 11:11:14,307 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_25_to_26_0 [2024-11-19 11:11:14,307 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_25_to_26_0 [2024-11-19 11:11:14,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 11:11:14,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 11:11:14,307 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 11:11:14,307 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 11:11:14,307 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-19 11:11:14,307 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-19 11:11:14,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-19 11:11:14,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-19 11:11:14,308 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_27_to_27_0 [2024-11-19 11:11:14,308 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_27_to_27_0 [2024-11-19 11:11:14,308 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_26_to_27_0 [2024-11-19 11:11:14,308 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_26_to_27_0 [2024-11-19 11:11:14,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 11:11:14,397 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 11:11:14,399 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 11:11:14,634 INFO L? ?]: Removed 25 outVars from TransFormulas that were not future-live. [2024-11-19 11:11:14,634 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 11:11:14,645 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 11:11:14,645 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-19 11:11:14,646 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:11:14 BoogieIcfgContainer [2024-11-19 11:11:14,646 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 11:11:14,647 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 11:11:14,647 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 11:11:14,650 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 11:11:14,650 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 11:11:13" (1/3) ... [2024-11-19 11:11:14,651 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@565a9a09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 11:11:14, skipping insertion in model container [2024-11-19 11:11:14,651 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:14" (2/3) ... [2024-11-19 11:11:14,651 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@565a9a09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 11:11:14, skipping insertion in model container [2024-11-19 11:11:14,651 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:11:14" (3/3) ... [2024-11-19 11:11:14,652 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_nested_5.c [2024-11-19 11:11:14,665 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 11:11:14,666 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-11-19 11:11:14,716 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 11:11:14,722 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=PETRI_NET, 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;@4a1ff98f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 11:11:14,722 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-11-19 11:11:14,726 INFO L276 IsEmpty]: Start isEmpty. Operand has 70 states, 44 states have (on average 1.4545454545454546) internal successors, (64), 59 states have internal predecessors, (64), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-19 11:11:14,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-19 11:11:14,732 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:11:14,733 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:11:14,734 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_23_to_24_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_24_to_25_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_24_to_25_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-19 11:11:14,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:11:14,740 INFO L85 PathProgramCache]: Analyzing trace with hash -57619265, now seen corresponding path program 1 times [2024-11-19 11:11:14,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:11:14,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976412767] [2024-11-19 11:11:14,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:14,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:11:14,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:11:15,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:11:15,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:11:15,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976412767] [2024-11-19 11:11:15,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976412767] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:11:15,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:11:15,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 11:11:15,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51614152] [2024-11-19 11:11:15,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:11:15,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 11:11:15,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:11:15,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 11:11:15,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 11:11:15,237 INFO L87 Difference]: Start difference. First operand has 70 states, 44 states have (on average 1.4545454545454546) internal successors, (64), 59 states have internal predecessors, (64), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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) [2024-11-19 11:11:15,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:11:15,457 INFO L93 Difference]: Finished difference Result 140 states and 171 transitions. [2024-11-19 11:11:15,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 11:11:15,460 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 12 [2024-11-19 11:11:15,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:11:15,465 INFO L225 Difference]: With dead ends: 140 [2024-11-19 11:11:15,466 INFO L226 Difference]: Without dead ends: 56 [2024-11-19 11:11:15,468 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 11:11:15,470 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 42 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 11:11:15,471 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 158 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 11:11:15,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-19 11:11:15,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-11-19 11:11:15,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 31 states have (on average 1.4516129032258065) internal successors, (45), 45 states have internal predecessors, (45), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2024-11-19 11:11:15,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2024-11-19 11:11:15,500 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 12 [2024-11-19 11:11:15,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:11:15,501 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2024-11-19 11:11:15,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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) [2024-11-19 11:11:15,501 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2024-11-19 11:11:15,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-19 11:11:15,502 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:11:15,502 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:11:15,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 11:11:15,502 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_24_to_25_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_24_to_25_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_24_to_25_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-19 11:11:15,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:11:15,503 INFO L85 PathProgramCache]: Analyzing trace with hash 780750332, now seen corresponding path program 1 times [2024-11-19 11:11:15,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:11:15,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295331052] [2024-11-19 11:11:15,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:15,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:11:15,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:11:15,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:11:15,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:11:15,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295331052] [2024-11-19 11:11:15,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295331052] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:11:15,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:11:15,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 11:11:15,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456824212] [2024-11-19 11:11:15,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:11:15,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 11:11:15,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:11:15,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 11:11:15,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 11:11:15,689 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand has 6 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 11:11:15,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:11:15,751 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2024-11-19 11:11:15,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 11:11:15,751 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2024-11-19 11:11:15,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:11:15,752 INFO L225 Difference]: With dead ends: 66 [2024-11-19 11:11:15,756 INFO L226 Difference]: Without dead ends: 62 [2024-11-19 11:11:15,756 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-19 11:11:15,757 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 11 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 11:11:15,757 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 274 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 11:11:15,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-19 11:11:15,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-11-19 11:11:15,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 36 states have (on average 1.3888888888888888) internal successors, (50), 49 states have internal predecessors, (50), 11 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2024-11-19 11:11:15,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 71 transitions. [2024-11-19 11:11:15,770 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 71 transitions. Word has length 15 [2024-11-19 11:11:15,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:11:15,770 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 71 transitions. [2024-11-19 11:11:15,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 11:11:15,771 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 71 transitions. [2024-11-19 11:11:15,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-19 11:11:15,771 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:11:15,771 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:11:15,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 11:11:15,771 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_27_to_27_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_24_to_25_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_24_to_25_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-19 11:11:15,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:11:15,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1520081603, now seen corresponding path program 1 times [2024-11-19 11:11:15,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:11:15,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330793404] [2024-11-19 11:11:15,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:15,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:11:15,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:11:15,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:11:15,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:11:15,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330793404] [2024-11-19 11:11:15,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330793404] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:11:15,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:11:15,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 11:11:15,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202473609] [2024-11-19 11:11:15,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:11:15,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 11:11:15,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:11:15,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 11:11:15,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 11:11:15,967 INFO L87 Difference]: Start difference. First operand 62 states and 71 transitions. Second operand has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 11:11:16,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:11:16,037 INFO L93 Difference]: Finished difference Result 126 states and 154 transitions. [2024-11-19 11:11:16,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 11:11:16,040 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-19 11:11:16,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:11:16,041 INFO L225 Difference]: With dead ends: 126 [2024-11-19 11:11:16,042 INFO L226 Difference]: Without dead ends: 67 [2024-11-19 11:11:16,042 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 11:11:16,043 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 5 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 11:11:16,044 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 273 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 11:11:16,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-19 11:11:16,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 65. [2024-11-19 11:11:16,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 39 states have (on average 1.358974358974359) internal successors, (53), 51 states have internal predecessors, (53), 11 states have call successors, (11), 7 states have call predecessors, (11), 5 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2024-11-19 11:11:16,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 74 transitions. [2024-11-19 11:11:16,055 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 74 transitions. Word has length 18 [2024-11-19 11:11:16,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:11:16,055 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 74 transitions. [2024-11-19 11:11:16,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 11:11:16,056 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 74 transitions. [2024-11-19 11:11:16,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-19 11:11:16,056 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:11:16,056 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:11:16,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 11:11:16,057 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_25_to_26_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_24_to_25_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_24_to_25_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-19 11:11:16,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:11:16,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1526395918, now seen corresponding path program 1 times [2024-11-19 11:11:16,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:11:16,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813569770] [2024-11-19 11:11:16,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:16,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:11:16,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:11:16,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:11:16,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:11:16,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813569770] [2024-11-19 11:11:16,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813569770] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:11:16,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:11:16,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 11:11:16,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315360090] [2024-11-19 11:11:16,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:11:16,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 11:11:16,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:11:16,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 11:11:16,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 11:11:16,233 INFO L87 Difference]: Start difference. First operand 65 states and 74 transitions. Second operand has 7 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 11:11:16,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:11:16,306 INFO L93 Difference]: Finished difference Result 135 states and 161 transitions. [2024-11-19 11:11:16,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 11:11:16,308 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2024-11-19 11:11:16,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:11:16,309 INFO L225 Difference]: With dead ends: 135 [2024-11-19 11:11:16,309 INFO L226 Difference]: Without dead ends: 73 [2024-11-19 11:11:16,310 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-19 11:11:16,311 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 9 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 11:11:16,311 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 314 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 11:11:16,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-19 11:11:16,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 70. [2024-11-19 11:11:16,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 43 states have (on average 1.3255813953488371) internal successors, (57), 54 states have internal predecessors, (57), 12 states have call successors, (12), 8 states have call predecessors, (12), 5 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-11-19 11:11:16,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 80 transitions. [2024-11-19 11:11:16,322 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 80 transitions. Word has length 18 [2024-11-19 11:11:16,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:11:16,323 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 80 transitions. [2024-11-19 11:11:16,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 11:11:16,323 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 80 transitions. [2024-11-19 11:11:16,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-19 11:11:16,323 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:11:16,323 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:11:16,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 11:11:16,324 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_27_to_27_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_24_to_25_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_24_to_25_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-19 11:11:16,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:11:16,324 INFO L85 PathProgramCache]: Analyzing trace with hash -122110496, now seen corresponding path program 1 times [2024-11-19 11:11:16,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:11:16,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361860672] [2024-11-19 11:11:16,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:16,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:11:16,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:11:16,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:11:16,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:11:16,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361860672] [2024-11-19 11:11:16,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361860672] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:11:16,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:11:16,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 11:11:16,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650329268] [2024-11-19 11:11:16,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:11:16,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 11:11:16,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:11:16,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 11:11:16,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 11:11:16,369 INFO L87 Difference]: Start difference. First operand 70 states and 80 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 11:11:16,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:11:16,383 INFO L93 Difference]: Finished difference Result 70 states and 80 transitions. [2024-11-19 11:11:16,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 11:11:16,383 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-19 11:11:16,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:11:16,384 INFO L225 Difference]: With dead ends: 70 [2024-11-19 11:11:16,384 INFO L226 Difference]: Without dead ends: 69 [2024-11-19 11:11:16,384 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 11:11:16,385 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 0 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 11:11:16,385 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 165 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 11:11:16,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-19 11:11:16,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-11-19 11:11:16,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 43 states have (on average 1.302325581395349) internal successors, (56), 53 states have internal predecessors, (56), 12 states have call successors, (12), 8 states have call predecessors, (12), 5 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-11-19 11:11:16,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 79 transitions. [2024-11-19 11:11:16,390 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 79 transitions. Word has length 19 [2024-11-19 11:11:16,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:11:16,391 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 79 transitions. [2024-11-19 11:11:16,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 11:11:16,391 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 79 transitions. [2024-11-19 11:11:16,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-19 11:11:16,391 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:11:16,391 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:11:16,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 11:11:16,392 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_25_to_26_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_24_to_25_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_24_to_25_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-19 11:11:16,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:11:16,392 INFO L85 PathProgramCache]: Analyzing trace with hash 73633256, now seen corresponding path program 1 times [2024-11-19 11:11:16,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:11:16,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235898720] [2024-11-19 11:11:16,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:16,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:11:16,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:11:16,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:11:16,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:11:16,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235898720] [2024-11-19 11:11:16,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235898720] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:11:16,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:11:16,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 11:11:16,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436574921] [2024-11-19 11:11:16,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:11:16,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 11:11:16,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:11:16,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 11:11:16,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 11:11:16,439 INFO L87 Difference]: Start difference. First operand 69 states and 79 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 11:11:16,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:11:16,476 INFO L93 Difference]: Finished difference Result 69 states and 79 transitions. [2024-11-19 11:11:16,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 11:11:16,477 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2024-11-19 11:11:16,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:11:16,477 INFO L225 Difference]: With dead ends: 69 [2024-11-19 11:11:16,477 INFO L226 Difference]: Without dead ends: 68 [2024-11-19 11:11:16,478 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 11:11:16,478 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 3 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 11:11:16,479 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 206 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 11:11:16,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-19 11:11:16,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2024-11-19 11:11:16,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 43 states have (on average 1.2790697674418605) internal successors, (55), 52 states have internal predecessors, (55), 12 states have call successors, (12), 8 states have call predecessors, (12), 5 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-11-19 11:11:16,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 78 transitions. [2024-11-19 11:11:16,483 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 78 transitions. Word has length 19 [2024-11-19 11:11:16,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:11:16,483 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 78 transitions. [2024-11-19 11:11:16,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 11:11:16,484 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 78 transitions. [2024-11-19 11:11:16,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-19 11:11:16,484 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:11:16,484 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:11:16,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 11:11:16,485 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_27_to_27_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_24_to_25_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_24_to_25_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-19 11:11:16,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:11:16,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1353591939, now seen corresponding path program 1 times [2024-11-19 11:11:16,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:11:16,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489482543] [2024-11-19 11:11:16,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:16,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:11:16,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:11:16,633 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:11:16,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:11:16,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489482543] [2024-11-19 11:11:16,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489482543] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:11:16,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:11:16,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 11:11:16,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739955967] [2024-11-19 11:11:16,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:11:16,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 11:11:16,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:11:16,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 11:11:16,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-19 11:11:16,635 INFO L87 Difference]: Start difference. First operand 68 states and 78 transitions. Second operand has 7 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 11:11:16,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:11:16,698 INFO L93 Difference]: Finished difference Result 74 states and 88 transitions. [2024-11-19 11:11:16,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 11:11:16,699 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-19 11:11:16,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:11:16,701 INFO L225 Difference]: With dead ends: 74 [2024-11-19 11:11:16,701 INFO L226 Difference]: Without dead ends: 73 [2024-11-19 11:11:16,701 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-19 11:11:16,702 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 11 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 11:11:16,702 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 260 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 11:11:16,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-19 11:11:16,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 68. [2024-11-19 11:11:16,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 43 states have (on average 1.255813953488372) internal successors, (54), 51 states have internal predecessors, (54), 12 states have call successors, (12), 8 states have call predecessors, (12), 6 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2024-11-19 11:11:16,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 78 transitions. [2024-11-19 11:11:16,715 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 78 transitions. Word has length 23 [2024-11-19 11:11:16,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:11:16,715 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 78 transitions. [2024-11-19 11:11:16,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 11:11:16,716 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 78 transitions. [2024-11-19 11:11:16,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-19 11:11:16,716 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:11:16,716 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:11:16,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 11:11:16,716 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_26_to_27_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_24_to_25_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_24_to_25_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-19 11:11:16,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:11:16,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1741627569, now seen corresponding path program 1 times [2024-11-19 11:11:16,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:11:16,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038666983] [2024-11-19 11:11:16,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:16,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:11:16,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:11:16,858 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 11:11:16,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:11:16,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038666983] [2024-11-19 11:11:16,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038666983] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:11:16,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:11:16,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 11:11:16,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787159920] [2024-11-19 11:11:16,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:11:16,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 11:11:16,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:11:16,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 11:11:16,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 11:11:16,861 INFO L87 Difference]: Start difference. First operand 68 states and 78 transitions. Second operand has 6 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 11:11:16,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:11:16,913 INFO L93 Difference]: Finished difference Result 85 states and 99 transitions. [2024-11-19 11:11:16,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 11:11:16,913 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2024-11-19 11:11:16,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:11:16,914 INFO L225 Difference]: With dead ends: 85 [2024-11-19 11:11:16,914 INFO L226 Difference]: Without dead ends: 83 [2024-11-19 11:11:16,914 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-19 11:11:16,915 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 15 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 11:11:16,915 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 251 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 11:11:16,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-19 11:11:16,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 76. [2024-11-19 11:11:16,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 57 states have internal predecessors, (61), 13 states have call successors, (13), 9 states have call predecessors, (13), 7 states have return successors, (15), 11 states have call predecessors, (15), 11 states have call successors, (15) [2024-11-19 11:11:16,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 89 transitions. [2024-11-19 11:11:16,927 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 89 transitions. Word has length 28 [2024-11-19 11:11:16,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:11:16,928 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 89 transitions. [2024-11-19 11:11:16,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 11:11:16,928 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 89 transitions. [2024-11-19 11:11:16,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-19 11:11:16,930 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:11:16,930 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:11:16,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 11:11:16,931 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_25_to_26_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_24_to_25_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_24_to_25_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-19 11:11:16,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:11:16,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1236543506, now seen corresponding path program 1 times [2024-11-19 11:11:16,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:11:16,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255598638] [2024-11-19 11:11:16,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:16,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:11:16,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:11:17,064 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 11:11:17,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:11:17,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255598638] [2024-11-19 11:11:17,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255598638] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:11:17,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371912952] [2024-11-19 11:11:17,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:17,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:11:17,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:11:17,067 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:11:17,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 11:11:17,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:11:17,170 INFO L255 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-19 11:11:17,174 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:11:17,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2024-11-19 11:11:17,264 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 11:11:17,265 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 11:11:17,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371912952] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:11:17,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 11:11:17,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-19 11:11:17,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738470102] [2024-11-19 11:11:17,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:11:17,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 11:11:17,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:11:17,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 11:11:17,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 11:11:17,268 INFO L87 Difference]: Start difference. First operand 76 states and 89 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 11:11:17,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:11:17,354 INFO L93 Difference]: Finished difference Result 153 states and 184 transitions. [2024-11-19 11:11:17,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 11:11:17,355 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2024-11-19 11:11:17,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:11:17,356 INFO L225 Difference]: With dead ends: 153 [2024-11-19 11:11:17,358 INFO L226 Difference]: Without dead ends: 78 [2024-11-19 11:11:17,359 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 11:11:17,359 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 21 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:11:17,359 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 154 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:11:17,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-19 11:11:17,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-11-19 11:11:17,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 50 states have (on average 1.22) internal successors, (61), 57 states have internal predecessors, (61), 13 states have call successors, (13), 9 states have call predecessors, (13), 8 states have return successors, (15), 11 states have call predecessors, (15), 11 states have call successors, (15) [2024-11-19 11:11:17,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2024-11-19 11:11:17,370 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 29 [2024-11-19 11:11:17,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:11:17,370 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2024-11-19 11:11:17,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 11:11:17,370 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2024-11-19 11:11:17,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-19 11:11:17,372 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:11:17,372 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:11:17,386 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 11:11:17,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:11:17,577 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_26_to_27_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_24_to_25_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_24_to_25_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-19 11:11:17,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:11:17,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1736963760, now seen corresponding path program 1 times [2024-11-19 11:11:17,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:11:17,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731601027] [2024-11-19 11:11:17,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:17,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:11:17,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:11:17,939 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 11:11:17,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:11:17,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731601027] [2024-11-19 11:11:17,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731601027] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:11:17,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601789436] [2024-11-19 11:11:17,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:17,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:11:17,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:11:17,942 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:11:17,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 11:11:18,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:11:18,086 INFO L255 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 11:11:18,088 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:11:18,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2024-11-19 11:11:18,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 17 treesize of output 9 [2024-11-19 11:11:18,204 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-19 11:11:18,204 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 11:11:18,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601789436] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:11:18,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 11:11:18,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 15 [2024-11-19 11:11:18,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164546227] [2024-11-19 11:11:18,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:11:18,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 11:11:18,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:11:18,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 11:11:18,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2024-11-19 11:11:18,206 INFO L87 Difference]: Start difference. First operand 78 states and 89 transitions. Second operand has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-19 11:11:18,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:11:18,361 INFO L93 Difference]: Finished difference Result 81 states and 97 transitions. [2024-11-19 11:11:18,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 11:11:18,362 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 46 [2024-11-19 11:11:18,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:11:18,363 INFO L225 Difference]: With dead ends: 81 [2024-11-19 11:11:18,363 INFO L226 Difference]: Without dead ends: 80 [2024-11-19 11:11:18,363 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2024-11-19 11:11:18,364 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 57 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:11:18,364 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 175 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:11:18,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-19 11:11:18,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 77. [2024-11-19 11:11:18,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 50 states have (on average 1.2) internal successors, (60), 56 states have internal predecessors, (60), 13 states have call successors, (13), 9 states have call predecessors, (13), 8 states have return successors, (15), 11 states have call predecessors, (15), 11 states have call successors, (15) [2024-11-19 11:11:18,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 88 transitions. [2024-11-19 11:11:18,374 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 88 transitions. Word has length 46 [2024-11-19 11:11:18,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:11:18,374 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 88 transitions. [2024-11-19 11:11:18,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-19 11:11:18,374 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 88 transitions. [2024-11-19 11:11:18,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-19 11:11:18,375 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:11:18,375 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:11:18,389 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 11:11:18,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-19 11:11:18,580 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_26_to_27_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_24_to_25_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_24_to_25_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-19 11:11:18,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:11:18,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1988698206, now seen corresponding path program 1 times [2024-11-19 11:11:18,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:11:18,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287445835] [2024-11-19 11:11:18,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:18,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:11:18,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:11:18,635 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-19 11:11:18,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:11:18,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287445835] [2024-11-19 11:11:18,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287445835] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:11:18,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:11:18,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 11:11:18,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360724666] [2024-11-19 11:11:18,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:11:18,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 11:11:18,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:11:18,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 11:11:18,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 11:11:18,637 INFO L87 Difference]: Start difference. First operand 77 states and 88 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-19 11:11:18,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:11:18,662 INFO L93 Difference]: Finished difference Result 77 states and 88 transitions. [2024-11-19 11:11:18,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 11:11:18,662 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 47 [2024-11-19 11:11:18,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:11:18,663 INFO L225 Difference]: With dead ends: 77 [2024-11-19 11:11:18,663 INFO L226 Difference]: Without dead ends: 76 [2024-11-19 11:11:18,663 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 11:11:18,664 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 2 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 11:11:18,664 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 198 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 11:11:18,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-19 11:11:18,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 72. [2024-11-19 11:11:18,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 52 states have internal predecessors, (56), 12 states have call successors, (12), 9 states have call predecessors, (12), 8 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) [2024-11-19 11:11:18,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 82 transitions. [2024-11-19 11:11:18,671 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 82 transitions. Word has length 47 [2024-11-19 11:11:18,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:11:18,671 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 82 transitions. [2024-11-19 11:11:18,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-19 11:11:18,671 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 82 transitions. [2024-11-19 11:11:18,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-19 11:11:18,672 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:11:18,672 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:11:18,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 11:11:18,673 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_25_to_26_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_24_to_25_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_24_to_25_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-19 11:11:18,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:11:18,673 INFO L85 PathProgramCache]: Analyzing trace with hash 253714706, now seen corresponding path program 1 times [2024-11-19 11:11:18,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:11:18,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750662332] [2024-11-19 11:11:18,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:18,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:11:18,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:11:18,973 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-19 11:11:18,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:11:18,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750662332] [2024-11-19 11:11:18,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750662332] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:11:18,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496175057] [2024-11-19 11:11:18,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:18,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:11:18,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:11:18,991 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:11:18,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 11:11:19,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:11:19,117 INFO L255 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-19 11:11:19,120 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:11:19,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2024-11-19 11:11:19,264 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-19 11:11:19,265 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:11:19,628 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 24 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-19 11:11:19,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496175057] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:11:19,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 11:11:19,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 11] total 23 [2024-11-19 11:11:19,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304635899] [2024-11-19 11:11:19,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 11:11:19,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-19 11:11:19,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:11:19,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-19 11:11:19,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=401, Unknown=0, NotChecked=0, Total=506 [2024-11-19 11:11:19,630 INFO L87 Difference]: Start difference. First operand 72 states and 82 transitions. Second operand has 23 states, 18 states have (on average 3.111111111111111) internal successors, (56), 20 states have internal predecessors, (56), 9 states have call successors, (17), 5 states have call predecessors, (17), 6 states have return successors, (13), 7 states have call predecessors, (13), 9 states have call successors, (13) [2024-11-19 11:11:19,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:11:19,955 INFO L93 Difference]: Finished difference Result 145 states and 174 transitions. [2024-11-19 11:11:19,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 11:11:19,955 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 18 states have (on average 3.111111111111111) internal successors, (56), 20 states have internal predecessors, (56), 9 states have call successors, (17), 5 states have call predecessors, (17), 6 states have return successors, (13), 7 states have call predecessors, (13), 9 states have call successors, (13) Word has length 69 [2024-11-19 11:11:19,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:11:19,956 INFO L225 Difference]: With dead ends: 145 [2024-11-19 11:11:19,956 INFO L226 Difference]: Without dead ends: 76 [2024-11-19 11:11:19,957 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=172, Invalid=640, Unknown=0, NotChecked=0, Total=812 [2024-11-19 11:11:19,957 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 21 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 11:11:19,957 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 451 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 11:11:19,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-19 11:11:19,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2024-11-19 11:11:19,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 49 states have (on average 1.183673469387755) internal successors, (58), 54 states have internal predecessors, (58), 12 states have call successors, (12), 9 states have call predecessors, (12), 10 states have return successors, (16), 12 states have call predecessors, (16), 10 states have call successors, (16) [2024-11-19 11:11:19,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 86 transitions. [2024-11-19 11:11:19,965 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 86 transitions. Word has length 69 [2024-11-19 11:11:19,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:11:19,965 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 86 transitions. [2024-11-19 11:11:19,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 18 states have (on average 3.111111111111111) internal successors, (56), 20 states have internal predecessors, (56), 9 states have call successors, (17), 5 states have call predecessors, (17), 6 states have return successors, (13), 7 states have call predecessors, (13), 9 states have call successors, (13) [2024-11-19 11:11:19,966 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 86 transitions. [2024-11-19 11:11:19,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-19 11:11:19,967 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:11:19,967 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:11:19,982 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 11:11:20,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:11:20,171 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting func_to_recursive_line_25_to_26_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_24_to_25_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_24_to_25_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-19 11:11:20,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:11:20,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1492925202, now seen corresponding path program 2 times [2024-11-19 11:11:20,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:11:20,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309480651] [2024-11-19 11:11:20,172 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 11:11:20,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:11:20,197 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 11:11:20,197 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:11:20,575 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-11-19 11:11:20,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:11:20,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309480651] [2024-11-19 11:11:20,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309480651] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:11:20,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868783877] [2024-11-19 11:11:20,576 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 11:11:20,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:11:20,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:11:20,577 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:11:20,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 11:11:20,734 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 11:11:20,735 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:11:20,742 INFO L255 TraceCheckSpWp]: Trace formula consists of 776 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 11:11:20,746 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:11:20,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2024-11-19 11:11:20,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 17 treesize of output 9 [2024-11-19 11:11:20,964 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 285 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2024-11-19 11:11:20,965 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 11:11:20,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868783877] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:11:20,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 11:11:20,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 14 [2024-11-19 11:11:20,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959780985] [2024-11-19 11:11:20,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:11:20,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 11:11:20,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:11:20,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 11:11:20,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2024-11-19 11:11:20,967 INFO L87 Difference]: Start difference. First operand 76 states and 86 transitions. Second operand has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-19 11:11:21,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:11:21,088 INFO L93 Difference]: Finished difference Result 80 states and 95 transitions. [2024-11-19 11:11:21,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 11:11:21,088 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 149 [2024-11-19 11:11:21,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:11:21,089 INFO L225 Difference]: With dead ends: 80 [2024-11-19 11:11:21,089 INFO L226 Difference]: Without dead ends: 79 [2024-11-19 11:11:21,089 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2024-11-19 11:11:21,090 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 44 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:11:21,090 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 222 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:11:21,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-19 11:11:21,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 72. [2024-11-19 11:11:21,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 47 states have (on average 1.1702127659574468) internal successors, (55), 51 states have internal predecessors, (55), 11 states have call successors, (11), 9 states have call predecessors, (11), 10 states have return successors, (15), 11 states have call predecessors, (15), 9 states have call successors, (15) [2024-11-19 11:11:21,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 81 transitions. [2024-11-19 11:11:21,097 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 81 transitions. Word has length 149 [2024-11-19 11:11:21,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:11:21,097 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 81 transitions. [2024-11-19 11:11:21,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-19 11:11:21,097 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 81 transitions. [2024-11-19 11:11:21,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-19 11:11:21,098 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:11:21,098 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:11:21,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-19 11:11:21,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:11:21,299 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting func_to_recursive_line_23_to_24_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_24_to_25_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_24_to_25_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-19 11:11:21,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:11:21,300 INFO L85 PathProgramCache]: Analyzing trace with hash -460922869, now seen corresponding path program 1 times [2024-11-19 11:11:21,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:11:21,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558646100] [2024-11-19 11:11:21,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:21,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:11:21,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:11:21,672 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-11-19 11:11:21,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:11:21,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558646100] [2024-11-19 11:11:21,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558646100] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:11:21,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400226862] [2024-11-19 11:11:21,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:21,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:11:21,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:11:21,674 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:11:21,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 11:11:21,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:11:21,811 INFO L255 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-19 11:11:21,814 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:11:21,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2024-11-19 11:11:21,964 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-11-19 11:11:21,964 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:11:22,603 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-19 11:11:22,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400226862] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:11:22,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 11:11:22,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 11] total 24 [2024-11-19 11:11:22,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167647154] [2024-11-19 11:11:22,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 11:11:22,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-19 11:11:22,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:11:22,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-19 11:11:22,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2024-11-19 11:11:22,607 INFO L87 Difference]: Start difference. First operand 72 states and 81 transitions. Second operand has 24 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 21 states have internal predecessors, (55), 10 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (14), 7 states have call predecessors, (14), 10 states have call successors, (14) [2024-11-19 11:11:22,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:11:22,935 INFO L93 Difference]: Finished difference Result 145 states and 169 transitions. [2024-11-19 11:11:22,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 11:11:22,936 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 21 states have internal predecessors, (55), 10 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (14), 7 states have call predecessors, (14), 10 states have call successors, (14) Word has length 98 [2024-11-19 11:11:22,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:11:22,937 INFO L225 Difference]: With dead ends: 145 [2024-11-19 11:11:22,937 INFO L226 Difference]: Without dead ends: 76 [2024-11-19 11:11:22,937 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=177, Invalid=693, Unknown=0, NotChecked=0, Total=870 [2024-11-19 11:11:22,938 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 44 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 11:11:22,938 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 224 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 11:11:22,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-19 11:11:22,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2024-11-19 11:11:22,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 49 states have (on average 1.163265306122449) internal successors, (57), 53 states have internal predecessors, (57), 11 states have call successors, (11), 9 states have call predecessors, (11), 12 states have return successors, (17), 13 states have call predecessors, (17), 9 states have call successors, (17) [2024-11-19 11:11:22,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 85 transitions. [2024-11-19 11:11:22,948 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 85 transitions. Word has length 98 [2024-11-19 11:11:22,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:11:22,948 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 85 transitions. [2024-11-19 11:11:22,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 21 states have internal predecessors, (55), 10 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (14), 7 states have call predecessors, (14), 10 states have call successors, (14) [2024-11-19 11:11:22,949 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 85 transitions. [2024-11-19 11:11:22,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2024-11-19 11:11:22,951 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:11:22,951 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 12, 12, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:11:22,968 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 11:11:23,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-19 11:11:23,152 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting func_to_recursive_line_23_to_24_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_24_to_25_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_24_to_25_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-19 11:11:23,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:11:23,152 INFO L85 PathProgramCache]: Analyzing trace with hash -226431031, now seen corresponding path program 2 times [2024-11-19 11:11:23,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:11:23,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053907138] [2024-11-19 11:11:23,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 11:11:23,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:11:23,178 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 11:11:23,181 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:11:23,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1207 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1207 trivial. 0 not checked. [2024-11-19 11:11:23,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:11:23,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053907138] [2024-11-19 11:11:23,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053907138] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:11:23,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:11:23,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 11:11:23,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182126675] [2024-11-19 11:11:23,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:11:23,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 11:11:23,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:11:23,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 11:11:23,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 11:11:23,229 INFO L87 Difference]: Start difference. First operand 76 states and 85 transitions. Second operand has 6 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-19 11:11:23,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:11:23,266 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2024-11-19 11:11:23,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 11:11:23,266 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 244 [2024-11-19 11:11:23,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:11:23,267 INFO L225 Difference]: With dead ends: 84 [2024-11-19 11:11:23,267 INFO L226 Difference]: Without dead ends: 82 [2024-11-19 11:11:23,267 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-19 11:11:23,268 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 7 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 11:11:23,268 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 249 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 11:11:23,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-19 11:11:23,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2024-11-19 11:11:23,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 54 states have (on average 1.1481481481481481) internal successors, (62), 57 states have internal predecessors, (62), 12 states have call successors, (12), 10 states have call predecessors, (12), 12 states have return successors, (18), 14 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-19 11:11:23,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 92 transitions. [2024-11-19 11:11:23,276 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 92 transitions. Word has length 244 [2024-11-19 11:11:23,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:11:23,277 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 92 transitions. [2024-11-19 11:11:23,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-19 11:11:23,278 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 92 transitions. [2024-11-19 11:11:23,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2024-11-19 11:11:23,281 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:11:23,282 INFO L215 NwaCegarLoop]: trace histogram [36, 36, 24, 24, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:11:23,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 11:11:23,282 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting func_to_recursive_line_24_to_25_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_24_to_25_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_24_to_25_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-19 11:11:23,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:11:23,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1025135821, now seen corresponding path program 1 times [2024-11-19 11:11:23,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:11:23,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381237018] [2024-11-19 11:11:23,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:23,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:11:23,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:11:24,336 INFO L134 CoverageAnalysis]: Checked inductivity of 5040 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5035 trivial. 0 not checked. [2024-11-19 11:11:24,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:11:24,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381237018] [2024-11-19 11:11:24,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381237018] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:11:24,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096843465] [2024-11-19 11:11:24,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:24,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:11:24,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:11:24,343 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:11:24,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 11:11:24,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:11:24,721 INFO L255 TraceCheckSpWp]: Trace formula consists of 2101 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-19 11:11:24,727 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:11:24,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2024-11-19 11:11:25,018 INFO L134 CoverageAnalysis]: Checked inductivity of 5040 backedges. 2634 proven. 3 refuted. 0 times theorem prover too weak. 2403 trivial. 0 not checked. [2024-11-19 11:11:25,018 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:11:26,747 INFO L134 CoverageAnalysis]: Checked inductivity of 5040 backedges. 370 proven. 204 refuted. 0 times theorem prover too weak. 4466 trivial. 0 not checked. [2024-11-19 11:11:26,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096843465] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:11:26,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 11:11:26,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 11] total 26 [2024-11-19 11:11:26,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128030559] [2024-11-19 11:11:26,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 11:11:26,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-19 11:11:26,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:11:26,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-19 11:11:26,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2024-11-19 11:11:26,755 INFO L87 Difference]: Start difference. First operand 82 states and 92 transitions. Second operand has 26 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 9 states have call successors, (24), 7 states have call predecessors, (24), 6 states have return successors, (22), 6 states have call predecessors, (22), 8 states have call successors, (22) [2024-11-19 11:11:27,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:11:27,223 INFO L93 Difference]: Finished difference Result 162 states and 201 transitions. [2024-11-19 11:11:27,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-19 11:11:27,223 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 9 states have call successors, (24), 7 states have call predecessors, (24), 6 states have return successors, (22), 6 states have call predecessors, (22), 8 states have call successors, (22) Word has length 464 [2024-11-19 11:11:27,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:11:27,224 INFO L225 Difference]: With dead ends: 162 [2024-11-19 11:11:27,224 INFO L226 Difference]: Without dead ends: 86 [2024-11-19 11:11:27,225 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 950 GetRequests, 913 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=196, Invalid=1286, Unknown=0, NotChecked=0, Total=1482 [2024-11-19 11:11:27,225 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 40 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 11:11:27,225 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 614 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 11:11:27,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-19 11:11:27,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 83. [2024-11-19 11:11:27,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 55 states have (on average 1.1272727272727272) internal successors, (62), 57 states have internal predecessors, (62), 12 states have call successors, (12), 10 states have call predecessors, (12), 13 states have return successors, (19), 15 states have call predecessors, (19), 10 states have call successors, (19) [2024-11-19 11:11:27,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 93 transitions. [2024-11-19 11:11:27,237 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 93 transitions. Word has length 464 [2024-11-19 11:11:27,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:11:27,237 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 93 transitions. [2024-11-19 11:11:27,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 9 states have call successors, (24), 7 states have call predecessors, (24), 6 states have return successors, (22), 6 states have call predecessors, (22), 8 states have call successors, (22) [2024-11-19 11:11:27,238 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 93 transitions. [2024-11-19 11:11:27,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 592 [2024-11-19 11:11:27,242 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:11:27,243 INFO L215 NwaCegarLoop]: trace histogram [54, 54, 36, 36, 36, 36, 36, 24, 24, 18, 18, 18, 18, 18, 18, 18, 18, 18, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:11:27,258 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 11:11:27,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-19 11:11:27,448 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting func_to_recursive_line_24_to_25_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_24_to_25_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_24_to_25_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-19 11:11:27,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:11:27,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1863787130, now seen corresponding path program 1 times [2024-11-19 11:11:27,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:11:27,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674180777] [2024-11-19 11:11:27,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:27,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:11:27,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:11:29,476 INFO L134 CoverageAnalysis]: Checked inductivity of 9676 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9670 trivial. 0 not checked. [2024-11-19 11:11:29,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:11:29,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674180777] [2024-11-19 11:11:29,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674180777] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:11:29,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489553778] [2024-11-19 11:11:29,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:29,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:11:29,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:11:29,480 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:11:29,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 11:11:29,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:11:29,897 INFO L255 TraceCheckSpWp]: Trace formula consists of 2516 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 11:11:29,907 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:11:30,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2024-11-19 11:11:30,383 INFO L134 CoverageAnalysis]: Checked inductivity of 9676 backedges. 4983 proven. 0 refuted. 0 times theorem prover too weak. 4693 trivial. 0 not checked. [2024-11-19 11:11:30,383 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 11:11:30,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489553778] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:11:30,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 11:11:30,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2024-11-19 11:11:30,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924954378] [2024-11-19 11:11:30,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:11:30,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 11:11:30,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:11:30,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 11:11:30,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-11-19 11:11:30,387 INFO L87 Difference]: Start difference. First operand 83 states and 93 transitions. Second operand has 6 states, 5 states have (on average 10.8) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-19 11:11:30,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:11:30,445 INFO L93 Difference]: Finished difference Result 83 states and 93 transitions. [2024-11-19 11:11:30,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 11:11:30,445 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.8) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 591 [2024-11-19 11:11:30,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:11:30,448 INFO L225 Difference]: With dead ends: 83 [2024-11-19 11:11:30,448 INFO L226 Difference]: Without dead ends: 82 [2024-11-19 11:11:30,448 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 601 GetRequests, 587 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2024-11-19 11:11:30,449 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 4 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 11:11:30,451 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 173 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 11:11:30,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-19 11:11:30,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 78. [2024-11-19 11:11:30,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 53 states have internal predecessors, (58), 11 states have call successors, (11), 10 states have call predecessors, (11), 13 states have return successors, (18), 14 states have call predecessors, (18), 9 states have call successors, (18) [2024-11-19 11:11:30,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 87 transitions. [2024-11-19 11:11:30,460 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 87 transitions. Word has length 591 [2024-11-19 11:11:30,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:11:30,462 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 87 transitions. [2024-11-19 11:11:30,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.8) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-19 11:11:30,463 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 87 transitions. [2024-11-19 11:11:30,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 614 [2024-11-19 11:11:30,469 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:11:30,469 INFO L215 NwaCegarLoop]: trace histogram [54, 54, 36, 36, 36, 36, 36, 24, 24, 18, 18, 18, 18, 18, 18, 18, 18, 18, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:11:30,486 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 11:11:30,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:11:30,670 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting func_to_recursive_line_23_to_24_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_24_to_25_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_24_to_25_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-19 11:11:30,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:11:30,671 INFO L85 PathProgramCache]: Analyzing trace with hash -347723963, now seen corresponding path program 1 times [2024-11-19 11:11:30,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:11:30,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144488293] [2024-11-19 11:11:30,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:30,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:11:30,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:11:31,760 INFO L134 CoverageAnalysis]: Checked inductivity of 9704 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 9677 trivial. 0 not checked. [2024-11-19 11:11:31,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:11:31,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144488293] [2024-11-19 11:11:31,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144488293] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:11:31,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671603511] [2024-11-19 11:11:31,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:31,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:11:31,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:11:31,763 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:11:31,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 11:11:32,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:11:32,172 INFO L255 TraceCheckSpWp]: Trace formula consists of 2682 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-19 11:11:32,180 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:11:32,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2024-11-19 11:11:32,375 INFO L134 CoverageAnalysis]: Checked inductivity of 9704 backedges. 908 proven. 8 refuted. 0 times theorem prover too weak. 8788 trivial. 0 not checked. [2024-11-19 11:11:32,375 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:11:34,620 INFO L134 CoverageAnalysis]: Checked inductivity of 9704 backedges. 17 proven. 992 refuted. 0 times theorem prover too weak. 8695 trivial. 0 not checked. [2024-11-19 11:11:34,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671603511] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:11:34,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 11:11:34,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 16] total 33 [2024-11-19 11:11:34,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733880880] [2024-11-19 11:11:34,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 11:11:34,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-19 11:11:34,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:11:34,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-19 11:11:34,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=896, Unknown=0, NotChecked=0, Total=1056 [2024-11-19 11:11:34,623 INFO L87 Difference]: Start difference. First operand 78 states and 87 transitions. Second operand has 33 states, 26 states have (on average 3.769230769230769) internal successors, (98), 28 states have internal predecessors, (98), 10 states have call successors, (30), 7 states have call predecessors, (30), 10 states have return successors, (31), 8 states have call predecessors, (31), 10 states have call successors, (31) [2024-11-19 11:11:35,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:11:35,131 INFO L93 Difference]: Finished difference Result 154 states and 185 transitions. [2024-11-19 11:11:35,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-19 11:11:35,131 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 26 states have (on average 3.769230769230769) internal successors, (98), 28 states have internal predecessors, (98), 10 states have call successors, (30), 7 states have call predecessors, (30), 10 states have return successors, (31), 8 states have call predecessors, (31), 10 states have call successors, (31) Word has length 613 [2024-11-19 11:11:35,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:11:35,132 INFO L225 Difference]: With dead ends: 154 [2024-11-19 11:11:35,132 INFO L226 Difference]: Without dead ends: 82 [2024-11-19 11:11:35,133 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1250 GetRequests, 1205 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=322, Invalid=1840, Unknown=0, NotChecked=0, Total=2162 [2024-11-19 11:11:35,133 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 55 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 11:11:35,133 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 148 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 11:11:35,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-19 11:11:35,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2024-11-19 11:11:35,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 54 states have (on average 1.1111111111111112) internal successors, (60), 55 states have internal predecessors, (60), 11 states have call successors, (11), 10 states have call predecessors, (11), 15 states have return successors, (20), 16 states have call predecessors, (20), 9 states have call successors, (20) [2024-11-19 11:11:35,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2024-11-19 11:11:35,140 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 613 [2024-11-19 11:11:35,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:11:35,141 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2024-11-19 11:11:35,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 26 states have (on average 3.769230769230769) internal successors, (98), 28 states have internal predecessors, (98), 10 states have call successors, (30), 7 states have call predecessors, (30), 10 states have return successors, (31), 8 states have call predecessors, (31), 10 states have call successors, (31) [2024-11-19 11:11:35,141 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2024-11-19 11:11:35,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1456 [2024-11-19 11:11:35,149 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:11:35,149 INFO L215 NwaCegarLoop]: trace histogram [144, 144, 108, 108, 108, 108, 108, 48, 48, 36, 36, 36, 36, 36, 36, 36, 36, 36, 16, 16, 12, 12, 12, 12, 12, 12, 12, 12, 12, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:11:35,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-19 11:11:35,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-19 11:11:35,354 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting func_to_recursive_line_23_to_24_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_24_to_25_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_24_to_25_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-19 11:11:35,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:11:35,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1971050079, now seen corresponding path program 2 times [2024-11-19 11:11:35,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:11:35,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454021284] [2024-11-19 11:11:35,355 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 11:11:35,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:11:35,524 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 11:11:35,524 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:11:38,874 INFO L134 CoverageAnalysis]: Checked inductivity of 67085 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 67080 trivial. 0 not checked. [2024-11-19 11:11:38,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:11:38,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454021284] [2024-11-19 11:11:38,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454021284] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:11:38,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832975818] [2024-11-19 11:11:38,875 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 11:11:38,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:11:38,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:11:38,876 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:11:38,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 11:11:39,790 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 11:11:39,791 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:11:39,818 INFO L255 TraceCheckSpWp]: Trace formula consists of 5890 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 11:11:39,859 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:11:39,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2024-11-19 11:11:41,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 17 treesize of output 9 [2024-11-19 11:11:41,607 INFO L134 CoverageAnalysis]: Checked inductivity of 67085 backedges. 33905 proven. 0 refuted. 0 times theorem prover too weak. 33180 trivial. 0 not checked. [2024-11-19 11:11:41,608 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 11:11:41,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832975818] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:11:41,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 11:11:41,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 14 [2024-11-19 11:11:41,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599237500] [2024-11-19 11:11:41,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:11:41,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 11:11:41,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:11:41,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 11:11:41,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2024-11-19 11:11:41,609 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-19 11:11:41,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:11:41,695 INFO L93 Difference]: Finished difference Result 83 states and 92 transitions. [2024-11-19 11:11:41,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 11:11:41,696 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 1455 [2024-11-19 11:11:41,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:11:41,699 INFO L225 Difference]: With dead ends: 83 [2024-11-19 11:11:41,699 INFO L226 Difference]: Without dead ends: 82 [2024-11-19 11:11:41,699 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1469 GetRequests, 1452 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2024-11-19 11:11:41,700 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 16 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:11:41,700 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 212 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:11:41,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-19 11:11:41,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2024-11-19 11:11:41,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 54 states have (on average 1.0925925925925926) internal successors, (59), 54 states have internal predecessors, (59), 11 states have call successors, (11), 10 states have call predecessors, (11), 15 states have return successors, (20), 16 states have call predecessors, (20), 9 states have call successors, (20) [2024-11-19 11:11:41,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2024-11-19 11:11:41,707 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 1455 [2024-11-19 11:11:41,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:11:41,709 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2024-11-19 11:11:41,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-19 11:11:41,709 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2024-11-19 11:11:41,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1457 [2024-11-19 11:11:41,717 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:11:41,717 INFO L215 NwaCegarLoop]: trace histogram [144, 144, 108, 108, 108, 108, 108, 48, 48, 36, 36, 36, 36, 36, 36, 36, 36, 36, 16, 16, 12, 12, 12, 12, 12, 12, 12, 12, 12, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-19 11:11:41,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-19 11:11:41,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:11:41,922 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting func_to_recursive_line_23_to_24_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_24_to_25_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_24_to_25_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-19 11:11:41,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:11:41,922 INFO L85 PathProgramCache]: Analyzing trace with hash -973010208, now seen corresponding path program 1 times [2024-11-19 11:11:41,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:11:41,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454130357] [2024-11-19 11:11:41,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:41,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:11:42,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:11:45,115 INFO L134 CoverageAnalysis]: Checked inductivity of 67086 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 67080 trivial. 0 not checked. [2024-11-19 11:11:45,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:11:45,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454130357] [2024-11-19 11:11:45,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454130357] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:11:45,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57556831] [2024-11-19 11:11:45,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:45,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:11:45,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:11:45,117 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:11:45,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 11:11:46,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:11:46,032 INFO L255 TraceCheckSpWp]: Trace formula consists of 5891 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 11:11:46,049 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:11:47,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2024-11-19 11:11:47,030 INFO L134 CoverageAnalysis]: Checked inductivity of 67086 backedges. 33905 proven. 0 refuted. 0 times theorem prover too weak. 33181 trivial. 0 not checked. [2024-11-19 11:11:47,030 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 11:11:47,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57556831] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:11:47,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 11:11:47,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2024-11-19 11:11:47,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701225026] [2024-11-19 11:11:47,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:11:47,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 11:11:47,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:11:47,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 11:11:47,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-11-19 11:11:47,032 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand has 6 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-19 11:11:47,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:11:47,119 INFO L93 Difference]: Finished difference Result 81 states and 90 transitions. [2024-11-19 11:11:47,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 11:11:47,119 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 1456 [2024-11-19 11:11:47,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:11:47,121 INFO L225 Difference]: With dead ends: 81 [2024-11-19 11:11:47,121 INFO L226 Difference]: Without dead ends: 0 [2024-11-19 11:11:47,121 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1466 GetRequests, 1452 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2024-11-19 11:11:47,122 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 4 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 11:11:47,122 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 152 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 11:11:47,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-19 11:11:47,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-19 11:11:47,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2024-11-19 11:11:47,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-19 11:11:47,122 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1456 [2024-11-19 11:11:47,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:11:47,123 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-19 11:11:47,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-19 11:11:47,123 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-19 11:11:47,123 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-19 11:11:47,126 INFO L782 garLoopResultBuilder]: Registering result SAFE for location func_to_recursive_line_24_to_25_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 10 remaining) [2024-11-19 11:11:47,127 INFO L782 garLoopResultBuilder]: Registering result SAFE for location func_to_recursive_line_24_to_25_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2024-11-19 11:11:47,127 INFO L782 garLoopResultBuilder]: Registering result SAFE for location func_to_recursive_line_25_to_26_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2024-11-19 11:11:47,127 INFO L782 garLoopResultBuilder]: Registering result SAFE for location func_to_recursive_line_25_to_26_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2024-11-19 11:11:47,127 INFO L782 garLoopResultBuilder]: Registering result SAFE for location func_to_recursive_line_27_to_27_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2024-11-19 11:11:47,127 INFO L782 garLoopResultBuilder]: Registering result SAFE for location func_to_recursive_line_27_to_27_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2024-11-19 11:11:47,127 INFO L782 garLoopResultBuilder]: Registering result SAFE for location func_to_recursive_line_26_to_27_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2024-11-19 11:11:47,127 INFO L782 garLoopResultBuilder]: Registering result SAFE for location func_to_recursive_line_26_to_27_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2024-11-19 11:11:47,127 INFO L782 garLoopResultBuilder]: Registering result SAFE for location func_to_recursive_line_23_to_24_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2024-11-19 11:11:47,129 INFO L782 garLoopResultBuilder]: Registering result SAFE for location func_to_recursive_line_23_to_24_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 10 remaining) [2024-11-19 11:11:47,160 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-19 11:11:47,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:11:47,332 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:11:47,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-19 11:12:12,057 WARN L286 SmtUtils]: Spent 24.16s on a formula simplification. DAG size of input: 106 DAG size of output: 48 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter)