./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd-ll.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 494d69f416dd1b0b56dc0371ee72744b83dbc298da37778d271d6f779b4cdcdc --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 20:43:30,267 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 20:43:30,326 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-24 20:43:30,329 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 20:43:30,330 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 20:43:30,350 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 20:43:30,351 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 20:43:30,351 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 20:43:30,352 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 20:43:30,352 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 20:43:30,353 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 20:43:30,353 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 20:43:30,353 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 20:43:30,354 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 20:43:30,354 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 20:43:30,354 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 20:43:30,355 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 20:43:30,356 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 20:43:30,356 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 20:43:30,356 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 20:43:30,356 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 20:43:30,360 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 20:43:30,361 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 20:43:30,361 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 20:43:30,361 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 20:43:30,361 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-24 20:43:30,361 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 20:43:30,362 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 20:43:30,362 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 20:43:30,362 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 20:43:30,362 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 20:43:30,362 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 20:43:30,363 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 20:43:30,363 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 20:43:30,363 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 20:43:30,363 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 20:43:30,363 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 20:43:30,363 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 20:43:30,364 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 20:43:30,364 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 20:43:30,364 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 20:43:30,366 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 20:43:30,366 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 20:43:30,366 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 20:43:30,367 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 494d69f416dd1b0b56dc0371ee72744b83dbc298da37778d271d6f779b4cdcdc [2024-10-24 20:43:30,606 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 20:43:30,627 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 20:43:30,631 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 20:43:30,632 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 20:43:30,633 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 20:43:30,634 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd-ll.c [2024-10-24 20:43:31,991 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 20:43:32,211 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 20:43:32,211 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd-ll.c [2024-10-24 20:43:32,220 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0713fdb48/9f06327065bc4dcf808430960ef6725e/FLAG5fa1fc9a4 [2024-10-24 20:43:32,233 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0713fdb48/9f06327065bc4dcf808430960ef6725e [2024-10-24 20:43:32,236 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 20:43:32,238 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 20:43:32,239 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 20:43:32,239 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 20:43:32,244 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 20:43:32,245 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 08:43:32" (1/1) ... [2024-10-24 20:43:32,247 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73b9e90f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:43:32, skipping insertion in model container [2024-10-24 20:43:32,248 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 08:43:32" (1/1) ... [2024-10-24 20:43:32,268 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 20:43:32,400 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 20:43:32,411 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 20:43:32,435 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 20:43:32,449 INFO L204 MainTranslator]: Completed translation [2024-10-24 20:43:32,450 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:43:32 WrapperNode [2024-10-24 20:43:32,450 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 20:43:32,451 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 20:43:32,451 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 20:43:32,451 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 20:43:32,457 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:43:32" (1/1) ... [2024-10-24 20:43:32,470 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:43:32" (1/1) ... [2024-10-24 20:43:32,494 INFO L138 Inliner]: procedures = 16, calls = 107, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 144 [2024-10-24 20:43:32,495 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 20:43:32,499 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 20:43:32,499 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 20:43:32,500 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 20:43:32,509 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:43:32" (1/1) ... [2024-10-24 20:43:32,509 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:43:32" (1/1) ... [2024-10-24 20:43:32,512 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:43:32" (1/1) ... [2024-10-24 20:43:32,530 INFO L175 MemorySlicer]: Split 66 memory accesses to 9 slices as follows [2, 8, 10, 8, 8, 8, 8, 7, 7]. 15 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0, 0, 0]. The 14 writes are split as follows [0, 2, 2, 2, 2, 2, 2, 1, 1]. [2024-10-24 20:43:32,530 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:43:32" (1/1) ... [2024-10-24 20:43:32,530 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:43:32" (1/1) ... [2024-10-24 20:43:32,535 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:43:32" (1/1) ... [2024-10-24 20:43:32,537 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:43:32" (1/1) ... [2024-10-24 20:43:32,541 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:43:32" (1/1) ... [2024-10-24 20:43:32,542 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:43:32" (1/1) ... [2024-10-24 20:43:32,546 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 20:43:32,547 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 20:43:32,547 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 20:43:32,547 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 20:43:32,548 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:43:32" (1/1) ... [2024-10-24 20:43:32,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 20:43:32,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 20:43:32,575 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) [2024-10-24 20:43:32,577 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 [2024-10-24 20:43:32,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 20:43:32,620 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_33_to_48_0 [2024-10-24 20:43:32,620 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_33_to_48_0 [2024-10-24 20:43:32,620 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-24 20:43:32,620 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-24 20:43:32,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 20:43:32,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 20:43:32,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-24 20:43:32,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-24 20:43:32,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-24 20:43:32,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-24 20:43:32,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-24 20:43:32,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-10-24 20:43:32,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-10-24 20:43:32,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-24 20:43:32,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 20:43:32,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 20:43:32,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-24 20:43:32,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-24 20:43:32,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-24 20:43:32,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-10-24 20:43:32,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-10-24 20:43:32,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-10-24 20:43:32,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-10-24 20:43:32,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 20:43:32,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 20:43:32,624 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 20:43:32,624 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 20:43:32,624 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-24 20:43:32,624 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-24 20:43:32,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-24 20:43:32,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-10-24 20:43:32,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-10-24 20:43:32,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-10-24 20:43:32,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-10-24 20:43:32,626 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-24 20:43:32,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-24 20:43:32,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-24 20:43:32,727 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 20:43:32,730 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 20:43:33,377 INFO L? ?]: Removed 165 outVars from TransFormulas that were not future-live. [2024-10-24 20:43:33,377 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 20:43:33,411 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 20:43:33,411 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-24 20:43:33,412 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 08:43:33 BoogieIcfgContainer [2024-10-24 20:43:33,412 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 20:43:33,414 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 20:43:33,414 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 20:43:33,417 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 20:43:33,417 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 08:43:32" (1/3) ... [2024-10-24 20:43:33,418 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eab9f54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 08:43:33, skipping insertion in model container [2024-10-24 20:43:33,418 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:43:32" (2/3) ... [2024-10-24 20:43:33,419 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eab9f54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 08:43:33, skipping insertion in model container [2024-10-24 20:43:33,419 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 08:43:33" (3/3) ... [2024-10-24 20:43:33,421 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_egcd-ll.c [2024-10-24 20:43:33,435 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 20:43:33,435 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 56 error locations. [2024-10-24 20:43:33,485 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 20:43:33,490 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;@68b2cf58, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 20:43:33,491 INFO L334 AbstractCegarLoop]: Starting to check reachability of 56 error locations. [2024-10-24 20:43:33,495 INFO L276 IsEmpty]: Start isEmpty. Operand has 149 states, 78 states have (on average 1.7820512820512822) internal successors, (139), 135 states have internal predecessors, (139), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-10-24 20:43:33,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-24 20:43:33,501 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:43:33,501 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 20:43:33,502 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-24 20:43:33,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:43:33,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1447836937, now seen corresponding path program 1 times [2024-10-24 20:43:33,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:43:33,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807782407] [2024-10-24 20:43:33,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:43:33,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:43:33,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:33,722 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 20:43:33,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:33,729 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 20:43:33,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:33,737 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 20:43:33,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:43:33,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807782407] [2024-10-24 20:43:33,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807782407] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 20:43:33,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 20:43:33,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 20:43:33,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883316908] [2024-10-24 20:43:33,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 20:43:33,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-24 20:43:33,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:43:33,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-24 20:43:33,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 20:43:33,768 INFO L87 Difference]: Start difference. First operand has 149 states, 78 states have (on average 1.7820512820512822) internal successors, (139), 135 states have internal predecessors, (139), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-24 20:43:33,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:43:33,808 INFO L93 Difference]: Finished difference Result 296 states and 330 transitions. [2024-10-24 20:43:33,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-24 20:43:33,811 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2024-10-24 20:43:33,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:43:33,817 INFO L225 Difference]: With dead ends: 296 [2024-10-24 20:43:33,817 INFO L226 Difference]: Without dead ends: 146 [2024-10-24 20:43:33,821 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 20:43:33,824 INFO L432 NwaCegarLoop]: 156 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 20:43:33,825 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 156 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 20:43:33,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-10-24 20:43:33,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2024-10-24 20:43:33,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 77 states have (on average 1.7402597402597402) internal successors, (134), 133 states have internal predecessors, (134), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-10-24 20:43:33,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 154 transitions. [2024-10-24 20:43:33,863 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 154 transitions. Word has length 17 [2024-10-24 20:43:33,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:43:33,864 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 154 transitions. [2024-10-24 20:43:33,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-24 20:43:33,864 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 154 transitions. [2024-10-24 20:43:33,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-24 20:43:33,865 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:43:33,865 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 20:43:33,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 20:43:33,866 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-24 20:43:33,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:43:33,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1026666483, now seen corresponding path program 1 times [2024-10-24 20:43:33,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:43:33,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823454270] [2024-10-24 20:43:33,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:43:33,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:43:33,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 20:43:33,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1849969592] [2024-10-24 20:43:33,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:43:33,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:43:33,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 20:43:33,935 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) [2024-10-24 20:43:33,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 20:43:34,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:34,069 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-24 20:43:34,074 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 20:43:34,136 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 [2024-10-24 20:43:34,139 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 [2024-10-24 20:43:34,202 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 [2024-10-24 20:43:34,213 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 20:43:34,214 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 20:43:34,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:43:34,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823454270] [2024-10-24 20:43:34,215 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 20:43:34,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849969592] [2024-10-24 20:43:34,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849969592] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 20:43:34,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 20:43:34,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 20:43:34,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738699725] [2024-10-24 20:43:34,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 20:43:34,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 20:43:34,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:43:34,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 20:43:34,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 20:43:34,221 INFO L87 Difference]: Start difference. First operand 146 states and 154 transitions. Second operand has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 20:43:34,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:43:34,414 INFO L93 Difference]: Finished difference Result 243 states and 258 transitions. [2024-10-24 20:43:34,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 20:43:34,415 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2024-10-24 20:43:34,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:43:34,417 INFO L225 Difference]: With dead ends: 243 [2024-10-24 20:43:34,417 INFO L226 Difference]: Without dead ends: 242 [2024-10-24 20:43:34,417 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-24 20:43:34,418 INFO L432 NwaCegarLoop]: 134 mSDtfsCounter, 159 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 20:43:34,418 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 650 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 20:43:34,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2024-10-24 20:43:34,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 175. [2024-10-24 20:43:34,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 102 states have (on average 1.7352941176470589) internal successors, (177), 158 states have internal predecessors, (177), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2024-10-24 20:43:34,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 204 transitions. [2024-10-24 20:43:34,438 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 204 transitions. Word has length 17 [2024-10-24 20:43:34,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:43:34,440 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 204 transitions. [2024-10-24 20:43:34,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 20:43:34,440 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 204 transitions. [2024-10-24 20:43:34,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-10-24 20:43:34,440 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:43:34,441 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 20:43:34,468 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 20:43:34,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:43:34,642 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-24 20:43:34,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:43:34,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1761889938, now seen corresponding path program 1 times [2024-10-24 20:43:34,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:43:34,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894789108] [2024-10-24 20:43:34,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:43:34,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:43:34,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 20:43:34,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [895693285] [2024-10-24 20:43:34,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:43:34,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:43:34,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 20:43:34,690 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) [2024-10-24 20:43:34,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 20:43:34,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:34,792 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-10-24 20:43:34,795 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 20:43:34,820 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 [2024-10-24 20:43:34,825 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 [2024-10-24 20:43:34,864 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 [2024-10-24 20:43:34,879 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 20:43:34,879 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 20:43:34,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:43:34,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894789108] [2024-10-24 20:43:34,880 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 20:43:34,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895693285] [2024-10-24 20:43:34,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895693285] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 20:43:34,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 20:43:34,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 20:43:34,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338066303] [2024-10-24 20:43:34,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 20:43:34,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 20:43:34,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:43:34,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 20:43:34,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 20:43:34,881 INFO L87 Difference]: Start difference. First operand 175 states and 204 transitions. Second operand has 6 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 20:43:35,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:43:35,055 INFO L93 Difference]: Finished difference Result 242 states and 257 transitions. [2024-10-24 20:43:35,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 20:43:35,055 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2024-10-24 20:43:35,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:43:35,057 INFO L225 Difference]: With dead ends: 242 [2024-10-24 20:43:35,058 INFO L226 Difference]: Without dead ends: 241 [2024-10-24 20:43:35,059 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-24 20:43:35,059 INFO L432 NwaCegarLoop]: 135 mSDtfsCounter, 156 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 20:43:35,061 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 652 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 20:43:35,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2024-10-24 20:43:35,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 175. [2024-10-24 20:43:35,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 102 states have (on average 1.7254901960784315) internal successors, (176), 158 states have internal predecessors, (176), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2024-10-24 20:43:35,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 203 transitions. [2024-10-24 20:43:35,077 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 203 transitions. Word has length 18 [2024-10-24 20:43:35,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:43:35,077 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 203 transitions. [2024-10-24 20:43:35,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 20:43:35,078 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 203 transitions. [2024-10-24 20:43:35,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-24 20:43:35,078 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:43:35,078 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 20:43:35,092 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 20:43:35,282 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,SelfDestructingSolverStorable2 [2024-10-24 20:43:35,283 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_33_to_48_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-24 20:43:35,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:43:35,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1215986731, now seen corresponding path program 1 times [2024-10-24 20:43:35,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:43:35,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630915981] [2024-10-24 20:43:35,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:43:35,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:43:35,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 20:43:35,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1357553875] [2024-10-24 20:43:35,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:43:35,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:43:35,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 20:43:35,319 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) [2024-10-24 20:43:35,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 20:43:35,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:35,410 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-24 20:43:35,412 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 20:43:35,422 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 [2024-10-24 20:43:35,453 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 20:43:35,453 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 20:43:35,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:43:35,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630915981] [2024-10-24 20:43:35,454 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 20:43:35,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357553875] [2024-10-24 20:43:35,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357553875] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 20:43:35,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 20:43:35,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 20:43:35,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811700883] [2024-10-24 20:43:35,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 20:43:35,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 20:43:35,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:43:35,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 20:43:35,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 20:43:35,455 INFO L87 Difference]: Start difference. First operand 175 states and 203 transitions. Second operand has 6 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 20:43:35,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:43:35,631 INFO L93 Difference]: Finished difference Result 289 states and 327 transitions. [2024-10-24 20:43:35,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 20:43:35,632 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), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2024-10-24 20:43:35,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:43:35,634 INFO L225 Difference]: With dead ends: 289 [2024-10-24 20:43:35,634 INFO L226 Difference]: Without dead ends: 287 [2024-10-24 20:43:35,635 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-24 20:43:35,637 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 167 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 20:43:35,637 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 669 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 20:43:35,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2024-10-24 20:43:35,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 214. [2024-10-24 20:43:35,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 135 states have (on average 1.711111111111111) internal successors, (231), 192 states have internal predecessors, (231), 17 states have call successors, (17), 5 states have call predecessors, (17), 6 states have return successors, (21), 17 states have call predecessors, (21), 17 states have call successors, (21) [2024-10-24 20:43:35,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 269 transitions. [2024-10-24 20:43:35,649 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 269 transitions. Word has length 19 [2024-10-24 20:43:35,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:43:35,649 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 269 transitions. [2024-10-24 20:43:35,649 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), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 20:43:35,649 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 269 transitions. [2024-10-24 20:43:35,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-24 20:43:35,650 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:43:35,650 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 20:43:35,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-24 20:43:35,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:43:35,851 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_33_to_48_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-24 20:43:35,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:43:35,852 INFO L85 PathProgramCache]: Analyzing trace with hash -332142665, now seen corresponding path program 1 times [2024-10-24 20:43:35,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:43:35,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570125211] [2024-10-24 20:43:35,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:43:35,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:43:35,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 20:43:35,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1202953076] [2024-10-24 20:43:35,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:43:35,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:43:35,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 20:43:35,884 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) [2024-10-24 20:43:35,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 20:43:35,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:35,986 INFO L255 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-10-24 20:43:35,990 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 20:43:36,001 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 [2024-10-24 20:43:36,006 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 [2024-10-24 20:43:36,012 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 [2024-10-24 20:43:36,108 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 20:43:36,109 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 20:43:36,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:43:36,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570125211] [2024-10-24 20:43:36,109 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 20:43:36,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202953076] [2024-10-24 20:43:36,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202953076] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 20:43:36,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 20:43:36,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 20:43:36,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351900325] [2024-10-24 20:43:36,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 20:43:36,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 20:43:36,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:43:36,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 20:43:36,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 20:43:36,110 INFO L87 Difference]: Start difference. First operand 214 states and 269 transitions. Second operand has 7 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 20:43:36,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:43:36,363 INFO L93 Difference]: Finished difference Result 274 states and 318 transitions. [2024-10-24 20:43:36,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 20:43:36,364 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), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2024-10-24 20:43:36,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:43:36,365 INFO L225 Difference]: With dead ends: 274 [2024-10-24 20:43:36,365 INFO L226 Difference]: Without dead ends: 272 [2024-10-24 20:43:36,366 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-24 20:43:36,366 INFO L432 NwaCegarLoop]: 134 mSDtfsCounter, 140 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 20:43:36,367 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 754 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 20:43:36,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2024-10-24 20:43:36,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 214. [2024-10-24 20:43:36,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 135 states have (on average 1.6962962962962962) internal successors, (229), 192 states have internal predecessors, (229), 17 states have call successors, (17), 5 states have call predecessors, (17), 6 states have return successors, (21), 17 states have call predecessors, (21), 17 states have call successors, (21) [2024-10-24 20:43:36,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 267 transitions. [2024-10-24 20:43:36,377 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 267 transitions. Word has length 21 [2024-10-24 20:43:36,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:43:36,378 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 267 transitions. [2024-10-24 20:43:36,378 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), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 20:43:36,378 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 267 transitions. [2024-10-24 20:43:36,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-24 20:43:36,378 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:43:36,378 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 20:43:36,392 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-24 20:43:36,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:43:36,579 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_33_to_48_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-24 20:43:36,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:43:36,580 INFO L85 PathProgramCache]: Analyzing trace with hash 660832390, now seen corresponding path program 1 times [2024-10-24 20:43:36,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:43:36,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031458336] [2024-10-24 20:43:36,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:43:36,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:43:36,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 20:43:36,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [174390283] [2024-10-24 20:43:36,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:43:36,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:43:36,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 20:43:36,632 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) [2024-10-24 20:43:36,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 20:43:36,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:36,728 INFO L255 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-10-24 20:43:36,730 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 20:43:36,737 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 [2024-10-24 20:43:36,777 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 [2024-10-24 20:43:36,915 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 [2024-10-24 20:43:36,919 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 [2024-10-24 20:43:36,933 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 20:43:36,933 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 20:43:36,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:43:36,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031458336] [2024-10-24 20:43:36,933 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 20:43:36,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174390283] [2024-10-24 20:43:36,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174390283] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 20:43:36,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 20:43:36,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-24 20:43:36,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216510371] [2024-10-24 20:43:36,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 20:43:36,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 20:43:36,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:43:36,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 20:43:36,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-10-24 20:43:36,935 INFO L87 Difference]: Start difference. First operand 214 states and 267 transitions. Second operand has 11 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-24 20:43:40,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 20:43:45,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 20:43:49,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 20:43:53,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 20:43:57,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 20:43:57,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:43:57,438 INFO L93 Difference]: Finished difference Result 386 states and 457 transitions. [2024-10-24 20:43:57,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 20:43:57,439 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 29 [2024-10-24 20:43:57,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:43:57,442 INFO L225 Difference]: With dead ends: 386 [2024-10-24 20:43:57,442 INFO L226 Difference]: Without dead ends: 385 [2024-10-24 20:43:57,442 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-10-24 20:43:57,444 INFO L432 NwaCegarLoop]: 125 mSDtfsCounter, 331 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 25 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 1031 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.4s IncrementalHoareTripleChecker+Time [2024-10-24 20:43:57,446 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 1031 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 272 Invalid, 5 Unknown, 0 Unchecked, 20.4s Time] [2024-10-24 20:43:57,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2024-10-24 20:43:57,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 282. [2024-10-24 20:43:57,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 193 states have (on average 1.7098445595854923) internal successors, (330), 251 states have internal predecessors, (330), 24 states have call successors, (24), 7 states have call predecessors, (24), 9 states have return successors, (31), 24 states have call predecessors, (31), 24 states have call successors, (31) [2024-10-24 20:43:57,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 385 transitions. [2024-10-24 20:43:57,474 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 385 transitions. Word has length 29 [2024-10-24 20:43:57,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:43:57,475 INFO L471 AbstractCegarLoop]: Abstraction has 282 states and 385 transitions. [2024-10-24 20:43:57,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-24 20:43:57,475 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 385 transitions. [2024-10-24 20:43:57,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-10-24 20:43:57,475 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:43:57,475 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 20:43:57,490 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-24 20:43:57,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:43:57,676 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_33_to_48_0Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-24 20:43:57,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:43:57,677 INFO L85 PathProgramCache]: Analyzing trace with hash -989032339, now seen corresponding path program 1 times [2024-10-24 20:43:57,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:43:57,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295652284] [2024-10-24 20:43:57,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:43:57,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:43:57,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 20:43:57,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1479729325] [2024-10-24 20:43:57,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:43:57,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:43:57,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 20:43:57,725 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) [2024-10-24 20:43:57,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 20:43:57,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:57,822 INFO L255 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-24 20:43:57,824 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 20:43:57,828 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 [2024-10-24 20:43:57,883 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 20:43:57,883 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 20:43:57,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:43:57,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295652284] [2024-10-24 20:43:57,884 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 20:43:57,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479729325] [2024-10-24 20:43:57,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479729325] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 20:43:57,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 20:43:57,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 20:43:57,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697057980] [2024-10-24 20:43:57,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 20:43:57,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 20:43:57,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:43:57,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 20:43:57,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-24 20:43:57,886 INFO L87 Difference]: Start difference. First operand 282 states and 385 transitions. Second operand has 7 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-24 20:43:58,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:43:58,043 INFO L93 Difference]: Finished difference Result 385 states and 455 transitions. [2024-10-24 20:43:58,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 20:43:58,044 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2024-10-24 20:43:58,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:43:58,045 INFO L225 Difference]: With dead ends: 385 [2024-10-24 20:43:58,046 INFO L226 Difference]: Without dead ends: 384 [2024-10-24 20:43:58,046 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-10-24 20:43:58,046 INFO L432 NwaCegarLoop]: 133 mSDtfsCounter, 221 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 20:43:58,047 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 820 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 20:43:58,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2024-10-24 20:43:58,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 282. [2024-10-24 20:43:58,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 193 states have (on average 1.6994818652849741) internal successors, (328), 251 states have internal predecessors, (328), 24 states have call successors, (24), 7 states have call predecessors, (24), 9 states have return successors, (31), 24 states have call predecessors, (31), 24 states have call successors, (31) [2024-10-24 20:43:58,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 383 transitions. [2024-10-24 20:43:58,066 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 383 transitions. Word has length 30 [2024-10-24 20:43:58,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:43:58,067 INFO L471 AbstractCegarLoop]: Abstraction has 282 states and 383 transitions. [2024-10-24 20:43:58,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-24 20:43:58,067 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 383 transitions. [2024-10-24 20:43:58,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-10-24 20:43:58,068 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:43:58,068 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 20:43:58,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-24 20:43:58,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:43:58,270 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_33_to_48_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-24 20:43:58,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:43:58,270 INFO L85 PathProgramCache]: Analyzing trace with hash -595231384, now seen corresponding path program 1 times [2024-10-24 20:43:58,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:43:58,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299337734] [2024-10-24 20:43:58,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:43:58,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:43:58,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 20:43:58,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [185114478] [2024-10-24 20:43:58,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:43:58,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:43:58,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 20:43:58,303 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) [2024-10-24 20:43:58,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-24 20:43:58,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:58,445 INFO L255 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-10-24 20:43:58,448 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 20:43:58,452 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 [2024-10-24 20:43:58,502 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 [2024-10-24 20:43:58,639 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 [2024-10-24 20:43:58,643 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 [2024-10-24 20:43:58,653 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 20:43:58,653 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 20:43:58,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:43:58,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299337734] [2024-10-24 20:43:58,770 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 20:43:58,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185114478] [2024-10-24 20:43:58,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185114478] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 20:43:58,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-24 20:43:58,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-10-24 20:43:58,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958250983] [2024-10-24 20:43:58,771 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-24 20:43:58,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 20:43:58,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:43:58,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 20:43:58,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-10-24 20:43:58,772 INFO L87 Difference]: Start difference. First operand 282 states and 383 transitions. Second operand has 12 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-24 20:44:02,789 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 20:44:06,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 20:44:11,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 20:44:15,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 20:44:19,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 20:44:23,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 20:44:23,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:44:23,226 INFO L93 Difference]: Finished difference Result 386 states and 452 transitions. [2024-10-24 20:44:23,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-24 20:44:23,227 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 31 [2024-10-24 20:44:23,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:44:23,230 INFO L225 Difference]: With dead ends: 386 [2024-10-24 20:44:23,230 INFO L226 Difference]: Without dead ends: 385 [2024-10-24 20:44:23,231 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2024-10-24 20:44:23,231 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 466 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 29 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.3s IncrementalHoareTripleChecker+Time [2024-10-24 20:44:23,231 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 963 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 281 Invalid, 6 Unknown, 0 Unchecked, 24.3s Time] [2024-10-24 20:44:23,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2024-10-24 20:44:23,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 286. [2024-10-24 20:44:23,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 196 states have (on average 1.6785714285714286) internal successors, (329), 254 states have internal predecessors, (329), 24 states have call successors, (24), 8 states have call predecessors, (24), 10 states have return successors, (31), 24 states have call predecessors, (31), 24 states have call successors, (31) [2024-10-24 20:44:23,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 384 transitions. [2024-10-24 20:44:23,250 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 384 transitions. Word has length 31 [2024-10-24 20:44:23,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:44:23,251 INFO L471 AbstractCegarLoop]: Abstraction has 286 states and 384 transitions. [2024-10-24 20:44:23,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-24 20:44:23,253 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 384 transitions. [2024-10-24 20:44:23,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-10-24 20:44:23,253 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:44:23,253 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 20:44:23,275 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-24 20:44:23,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:44:23,456 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_33_to_48_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-24 20:44:23,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:44:23,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1272303665, now seen corresponding path program 1 times [2024-10-24 20:44:23,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:44:23,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065150112] [2024-10-24 20:44:23,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:44:23,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:44:23,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 20:44:23,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [208764979] [2024-10-24 20:44:23,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:44:23,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:44:23,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 20:44:23,490 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) [2024-10-24 20:44:23,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-24 20:44:23,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:23,593 INFO L255 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-24 20:44:23,595 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 20:44:23,599 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 [2024-10-24 20:44:23,645 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 [2024-10-24 20:44:23,749 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 [2024-10-24 20:44:23,760 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 20:44:23,760 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 20:44:23,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:44:23,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065150112] [2024-10-24 20:44:23,760 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 20:44:23,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208764979] [2024-10-24 20:44:23,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208764979] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 20:44:23,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 20:44:23,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 20:44:23,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038785896] [2024-10-24 20:44:23,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 20:44:23,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 20:44:23,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:44:23,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 20:44:23,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-10-24 20:44:23,762 INFO L87 Difference]: Start difference. First operand 286 states and 384 transitions. Second operand has 9 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-24 20:44:24,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:44:24,104 INFO L93 Difference]: Finished difference Result 385 states and 450 transitions. [2024-10-24 20:44:24,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 20:44:24,104 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2024-10-24 20:44:24,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:44:24,106 INFO L225 Difference]: With dead ends: 385 [2024-10-24 20:44:24,106 INFO L226 Difference]: Without dead ends: 384 [2024-10-24 20:44:24,106 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-10-24 20:44:24,106 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 479 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 20:44:24,107 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 669 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 20:44:24,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2024-10-24 20:44:24,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 286. [2024-10-24 20:44:24,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 196 states have (on average 1.6683673469387754) internal successors, (327), 254 states have internal predecessors, (327), 24 states have call successors, (24), 8 states have call predecessors, (24), 10 states have return successors, (31), 24 states have call predecessors, (31), 24 states have call successors, (31) [2024-10-24 20:44:24,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 382 transitions. [2024-10-24 20:44:24,119 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 382 transitions. Word has length 32 [2024-10-24 20:44:24,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:44:24,119 INFO L471 AbstractCegarLoop]: Abstraction has 286 states and 382 transitions. [2024-10-24 20:44:24,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-24 20:44:24,119 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 382 transitions. [2024-10-24 20:44:24,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-10-24 20:44:24,120 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:44:24,120 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 20:44:24,133 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-24 20:44:24,320 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,SelfDestructingSolverStorable8 [2024-10-24 20:44:24,321 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_33_to_48_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-24 20:44:24,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:44:24,321 INFO L85 PathProgramCache]: Analyzing trace with hash -786707894, now seen corresponding path program 1 times [2024-10-24 20:44:24,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:44:24,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880472599] [2024-10-24 20:44:24,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:44:24,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:44:24,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 20:44:24,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [306783336] [2024-10-24 20:44:24,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:44:24,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:44:24,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 20:44:24,346 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) [2024-10-24 20:44:24,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-24 20:44:24,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:24,452 INFO L255 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-10-24 20:44:24,455 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 20:44:24,464 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 [2024-10-24 20:44:24,507 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 [2024-10-24 20:44:24,513 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 [2024-10-24 20:44:24,685 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 [2024-10-24 20:44:24,711 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 20:44:24,711 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 20:44:24,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:44:24,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880472599] [2024-10-24 20:44:24,712 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 20:44:24,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306783336] [2024-10-24 20:44:24,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306783336] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 20:44:24,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 20:44:24,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 20:44:24,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869423626] [2024-10-24 20:44:24,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 20:44:24,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 20:44:24,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:44:24,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 20:44:24,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-24 20:44:24,715 INFO L87 Difference]: Start difference. First operand 286 states and 382 transitions. Second operand has 10 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-24 20:44:25,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:44:25,158 INFO L93 Difference]: Finished difference Result 380 states and 444 transitions. [2024-10-24 20:44:25,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-24 20:44:25,159 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2024-10-24 20:44:25,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:44:25,160 INFO L225 Difference]: With dead ends: 380 [2024-10-24 20:44:25,161 INFO L226 Difference]: Without dead ends: 379 [2024-10-24 20:44:25,161 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2024-10-24 20:44:25,161 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 434 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 20:44:25,162 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [439 Valid, 905 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 20:44:25,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2024-10-24 20:44:25,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 286. [2024-10-24 20:44:25,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 196 states have (on average 1.6581632653061225) internal successors, (325), 254 states have internal predecessors, (325), 24 states have call successors, (24), 8 states have call predecessors, (24), 10 states have return successors, (31), 24 states have call predecessors, (31), 24 states have call successors, (31) [2024-10-24 20:44:25,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 380 transitions. [2024-10-24 20:44:25,174 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 380 transitions. Word has length 33 [2024-10-24 20:44:25,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:44:25,174 INFO L471 AbstractCegarLoop]: Abstraction has 286 states and 380 transitions. [2024-10-24 20:44:25,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-24 20:44:25,174 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 380 transitions. [2024-10-24 20:44:25,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-24 20:44:25,175 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:44:25,175 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 20:44:25,189 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-24 20:44:25,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-24 20:44:25,376 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_33_to_48_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-24 20:44:25,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:44:25,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1381859121, now seen corresponding path program 1 times [2024-10-24 20:44:25,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:44:25,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407073451] [2024-10-24 20:44:25,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:44:25,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:44:25,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 20:44:25,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1169271820] [2024-10-24 20:44:25,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:44:25,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:44:25,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 20:44:25,401 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) [2024-10-24 20:44:25,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-24 20:44:25,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:25,504 INFO L255 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-10-24 20:44:25,506 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 20:44:25,514 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 [2024-10-24 20:44:25,557 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 [2024-10-24 20:44:25,563 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 [2024-10-24 20:44:25,713 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 [2024-10-24 20:44:25,735 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 20:44:25,735 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 20:44:25,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:44:25,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407073451] [2024-10-24 20:44:25,736 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 20:44:25,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169271820] [2024-10-24 20:44:25,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169271820] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 20:44:25,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 20:44:25,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 20:44:25,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237843421] [2024-10-24 20:44:25,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 20:44:25,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 20:44:25,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:44:25,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 20:44:25,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-24 20:44:25,737 INFO L87 Difference]: Start difference. First operand 286 states and 380 transitions. Second operand has 10 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-24 20:44:26,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:44:26,155 INFO L93 Difference]: Finished difference Result 379 states and 442 transitions. [2024-10-24 20:44:26,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-24 20:44:26,155 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 34 [2024-10-24 20:44:26,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:44:26,158 INFO L225 Difference]: With dead ends: 379 [2024-10-24 20:44:26,158 INFO L226 Difference]: Without dead ends: 378 [2024-10-24 20:44:26,158 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2024-10-24 20:44:26,159 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 548 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 20:44:26,159 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [553 Valid, 749 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 20:44:26,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2024-10-24 20:44:26,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 286. [2024-10-24 20:44:26,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 196 states have (on average 1.6479591836734695) internal successors, (323), 254 states have internal predecessors, (323), 24 states have call successors, (24), 8 states have call predecessors, (24), 10 states have return successors, (31), 24 states have call predecessors, (31), 24 states have call successors, (31) [2024-10-24 20:44:26,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 378 transitions. [2024-10-24 20:44:26,174 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 378 transitions. Word has length 34 [2024-10-24 20:44:26,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:44:26,174 INFO L471 AbstractCegarLoop]: Abstraction has 286 states and 378 transitions. [2024-10-24 20:44:26,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-24 20:44:26,175 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 378 transitions. [2024-10-24 20:44:26,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-10-24 20:44:26,176 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:44:26,176 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 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, 1] [2024-10-24 20:44:26,189 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-24 20:44:26,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-24 20:44:26,380 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_33_to_48_0Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-24 20:44:26,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:44:26,380 INFO L85 PathProgramCache]: Analyzing trace with hash -625863665, now seen corresponding path program 1 times [2024-10-24 20:44:26,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:44:26,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020190519] [2024-10-24 20:44:26,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:44:26,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:44:26,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 20:44:26,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [661312978] [2024-10-24 20:44:26,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:44:26,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:44:26,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 20:44:26,410 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 20:44:26,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-24 20:44:26,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:26,526 INFO L255 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-10-24 20:44:26,528 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 20:44:26,532 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 [2024-10-24 20:44:26,577 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 [2024-10-24 20:44:26,744 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 [2024-10-24 20:44:26,758 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 20:44:26,758 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 20:44:26,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:44:26,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020190519] [2024-10-24 20:44:26,809 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 20:44:26,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661312978] [2024-10-24 20:44:26,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661312978] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 20:44:26,810 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-24 20:44:26,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-10-24 20:44:26,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433687305] [2024-10-24 20:44:26,810 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-24 20:44:26,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 20:44:26,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:44:26,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 20:44:26,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-10-24 20:44:26,811 INFO L87 Difference]: Start difference. First operand 286 states and 378 transitions. Second operand has 12 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 10 states have internal predecessors, (29), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-24 20:44:30,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 20:44:31,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:44:31,240 INFO L93 Difference]: Finished difference Result 432 states and 510 transitions. [2024-10-24 20:44:31,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-24 20:44:31,242 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 10 states have internal predecessors, (29), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 41 [2024-10-24 20:44:31,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:44:31,244 INFO L225 Difference]: With dead ends: 432 [2024-10-24 20:44:31,244 INFO L226 Difference]: Without dead ends: 431 [2024-10-24 20:44:31,244 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2024-10-24 20:44:31,244 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 536 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 35 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-10-24 20:44:31,244 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 1090 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 301 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2024-10-24 20:44:31,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2024-10-24 20:44:31,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 342. [2024-10-24 20:44:31,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 244 states have (on average 1.6598360655737705) internal successors, (405), 302 states have internal predecessors, (405), 30 states have call successors, (30), 10 states have call predecessors, (30), 12 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2024-10-24 20:44:31,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 472 transitions. [2024-10-24 20:44:31,263 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 472 transitions. Word has length 41 [2024-10-24 20:44:31,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:44:31,263 INFO L471 AbstractCegarLoop]: Abstraction has 342 states and 472 transitions. [2024-10-24 20:44:31,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 10 states have internal predecessors, (29), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-24 20:44:31,263 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 472 transitions. [2024-10-24 20:44:31,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-10-24 20:44:31,265 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:44:31,265 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1] [2024-10-24 20:44:31,280 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-24 20:44:31,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-24 20:44:31,467 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting func_to_recursive_line_33_to_48_0Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-24 20:44:31,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:44:31,468 INFO L85 PathProgramCache]: Analyzing trace with hash 2073062930, now seen corresponding path program 1 times [2024-10-24 20:44:31,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:44:31,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390906801] [2024-10-24 20:44:31,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:44:31,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:44:31,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 20:44:31,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1454727001] [2024-10-24 20:44:31,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:44:31,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:44:31,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 20:44:31,519 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 20:44:31,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-24 20:44:31,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:31,636 INFO L255 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-10-24 20:44:31,638 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 20:44:31,643 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 [2024-10-24 20:44:31,694 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 [2024-10-24 20:44:31,862 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 [2024-10-24 20:44:31,875 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 20:44:31,875 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 20:44:32,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:44:32,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390906801] [2024-10-24 20:44:32,201 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 20:44:32,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454727001] [2024-10-24 20:44:32,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454727001] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 20:44:32,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-24 20:44:32,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-10-24 20:44:32,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865789752] [2024-10-24 20:44:32,202 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-24 20:44:32,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 20:44:32,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:44:32,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 20:44:32,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-10-24 20:44:32,203 INFO L87 Difference]: Start difference. First operand 342 states and 472 transitions. Second operand has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-24 20:44:36,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 20:44:36,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:44:36,647 INFO L93 Difference]: Finished difference Result 431 states and 508 transitions. [2024-10-24 20:44:36,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-24 20:44:36,651 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 42 [2024-10-24 20:44:36,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:44:36,653 INFO L225 Difference]: With dead ends: 431 [2024-10-24 20:44:36,653 INFO L226 Difference]: Without dead ends: 430 [2024-10-24 20:44:36,653 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2024-10-24 20:44:36,654 INFO L432 NwaCegarLoop]: 133 mSDtfsCounter, 408 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-10-24 20:44:36,654 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 1167 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 319 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2024-10-24 20:44:36,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2024-10-24 20:44:36,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 342. [2024-10-24 20:44:36,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 244 states have (on average 1.651639344262295) internal successors, (403), 302 states have internal predecessors, (403), 30 states have call successors, (30), 10 states have call predecessors, (30), 12 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2024-10-24 20:44:36,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 470 transitions. [2024-10-24 20:44:36,674 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 470 transitions. Word has length 42 [2024-10-24 20:44:36,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:44:36,675 INFO L471 AbstractCegarLoop]: Abstraction has 342 states and 470 transitions. [2024-10-24 20:44:36,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-24 20:44:36,675 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 470 transitions. [2024-10-24 20:44:36,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-24 20:44:36,676 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:44:36,676 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1] [2024-10-24 20:44:36,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-24 20:44:36,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-24 20:44:36,878 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting func_to_recursive_line_33_to_48_0Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-24 20:44:36,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:44:36,878 INFO L85 PathProgramCache]: Analyzing trace with hash -159558543, now seen corresponding path program 1 times [2024-10-24 20:44:36,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:44:36,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410496381] [2024-10-24 20:44:36,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:44:36,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:44:36,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 20:44:36,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1543666782] [2024-10-24 20:44:36,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:44:36,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:44:36,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 20:44:36,905 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 20:44:36,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-24 20:44:37,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:37,010 INFO L255 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-24 20:44:37,012 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 20:44:37,015 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 [2024-10-24 20:44:37,035 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 [2024-10-24 20:44:37,204 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 [2024-10-24 20:44:37,217 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 20:44:37,217 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 20:44:37,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:44:37,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410496381] [2024-10-24 20:44:37,217 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 20:44:37,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543666782] [2024-10-24 20:44:37,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543666782] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 20:44:37,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 20:44:37,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-24 20:44:37,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409956776] [2024-10-24 20:44:37,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 20:44:37,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 20:44:37,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:44:37,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 20:44:37,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-10-24 20:44:37,219 INFO L87 Difference]: Start difference. First operand 342 states and 470 transitions. Second operand has 11 states, 8 states have (on average 3.875) internal successors, (31), 9 states have internal predecessors, (31), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-24 20:44:37,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:44:37,526 INFO L93 Difference]: Finished difference Result 440 states and 518 transitions. [2024-10-24 20:44:37,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 20:44:37,527 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 3.875) internal successors, (31), 9 states have internal predecessors, (31), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 43 [2024-10-24 20:44:37,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:44:37,529 INFO L225 Difference]: With dead ends: 440 [2024-10-24 20:44:37,529 INFO L226 Difference]: Without dead ends: 439 [2024-10-24 20:44:37,529 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-10-24 20:44:37,530 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 264 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 1252 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 20:44:37,530 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 1252 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 20:44:37,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2024-10-24 20:44:37,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 342. [2024-10-24 20:44:37,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 244 states have (on average 1.6434426229508197) internal successors, (401), 302 states have internal predecessors, (401), 30 states have call successors, (30), 10 states have call predecessors, (30), 12 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2024-10-24 20:44:37,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 468 transitions. [2024-10-24 20:44:37,558 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 468 transitions. Word has length 43 [2024-10-24 20:44:37,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:44:37,559 INFO L471 AbstractCegarLoop]: Abstraction has 342 states and 468 transitions. [2024-10-24 20:44:37,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 3.875) internal successors, (31), 9 states have internal predecessors, (31), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-24 20:44:37,559 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 468 transitions. [2024-10-24 20:44:37,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-10-24 20:44:37,559 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:44:37,559 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1] [2024-10-24 20:44:37,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-24 20:44:37,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-24 20:44:37,761 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting func_to_recursive_line_33_to_48_0Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-24 20:44:37,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:44:37,761 INFO L85 PathProgramCache]: Analyzing trace with hash -651347468, now seen corresponding path program 1 times [2024-10-24 20:44:37,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:44:37,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649059423] [2024-10-24 20:44:37,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:44:37,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:44:37,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 20:44:37,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [707356690] [2024-10-24 20:44:37,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:44:37,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:44:37,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 20:44:37,784 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 20:44:37,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-24 20:44:37,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:37,899 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-10-24 20:44:37,900 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 20:44:37,903 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 [2024-10-24 20:44:37,965 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 [2024-10-24 20:44:38,264 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 20:44:38,264 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 25 [2024-10-24 20:44:38,285 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 20:44:38,286 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 20:44:38,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:44:38,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649059423] [2024-10-24 20:44:38,286 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 20:44:38,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707356690] [2024-10-24 20:44:38,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707356690] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 20:44:38,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 20:44:38,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-24 20:44:38,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960256606] [2024-10-24 20:44:38,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 20:44:38,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-24 20:44:38,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:44:38,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-24 20:44:38,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-10-24 20:44:38,287 INFO L87 Difference]: Start difference. First operand 342 states and 468 transitions. Second operand has 13 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-24 20:44:38,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:44:38,813 INFO L93 Difference]: Finished difference Result 439 states and 516 transitions. [2024-10-24 20:44:38,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-24 20:44:38,814 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 44 [2024-10-24 20:44:38,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:44:38,815 INFO L225 Difference]: With dead ends: 439 [2024-10-24 20:44:38,815 INFO L226 Difference]: Without dead ends: 438 [2024-10-24 20:44:38,816 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 27 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2024-10-24 20:44:38,816 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 441 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 20:44:38,816 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 988 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 20:44:38,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2024-10-24 20:44:38,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 342. [2024-10-24 20:44:38,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 244 states have (on average 1.6352459016393444) internal successors, (399), 302 states have internal predecessors, (399), 30 states have call successors, (30), 10 states have call predecessors, (30), 12 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2024-10-24 20:44:38,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 466 transitions. [2024-10-24 20:44:38,835 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 466 transitions. Word has length 44 [2024-10-24 20:44:38,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:44:38,835 INFO L471 AbstractCegarLoop]: Abstraction has 342 states and 466 transitions. [2024-10-24 20:44:38,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-24 20:44:38,835 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 466 transitions. [2024-10-24 20:44:38,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-10-24 20:44:38,836 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:44:38,836 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1] [2024-10-24 20:44:38,850 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-24 20:44:39,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:44:39,037 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting func_to_recursive_line_33_to_48_0Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-24 20:44:39,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:44:39,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1283065043, now seen corresponding path program 1 times [2024-10-24 20:44:39,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:44:39,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21272205] [2024-10-24 20:44:39,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:44:39,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:44:39,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 20:44:39,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2037082842] [2024-10-24 20:44:39,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:44:39,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:44:39,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 20:44:39,067 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 20:44:39,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-24 20:44:39,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:39,184 INFO L255 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-10-24 20:44:39,186 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 20:44:39,189 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 [2024-10-24 20:44:39,224 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 [2024-10-24 20:44:39,227 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 [2024-10-24 20:44:39,466 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 [2024-10-24 20:44:39,487 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-24 20:44:39,487 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 20:44:39,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:44:39,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21272205] [2024-10-24 20:44:39,487 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 20:44:39,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037082842] [2024-10-24 20:44:39,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037082842] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 20:44:39,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 20:44:39,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 20:44:39,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112228477] [2024-10-24 20:44:39,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 20:44:39,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 20:44:39,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:44:39,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 20:44:39,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-24 20:44:39,489 INFO L87 Difference]: Start difference. First operand 342 states and 466 transitions. Second operand has 10 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-24 20:44:39,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:44:39,890 INFO L93 Difference]: Finished difference Result 428 states and 502 transitions. [2024-10-24 20:44:39,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-24 20:44:39,892 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 45 [2024-10-24 20:44:39,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:44:39,893 INFO L225 Difference]: With dead ends: 428 [2024-10-24 20:44:39,893 INFO L226 Difference]: Without dead ends: 427 [2024-10-24 20:44:39,893 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 6 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2024-10-24 20:44:39,894 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 492 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 20:44:39,894 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 855 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 20:44:39,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2024-10-24 20:44:39,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 342. [2024-10-24 20:44:39,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 244 states have (on average 1.6270491803278688) internal successors, (397), 302 states have internal predecessors, (397), 30 states have call successors, (30), 10 states have call predecessors, (30), 12 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2024-10-24 20:44:39,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 464 transitions. [2024-10-24 20:44:39,915 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 464 transitions. Word has length 45 [2024-10-24 20:44:39,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:44:39,915 INFO L471 AbstractCegarLoop]: Abstraction has 342 states and 464 transitions. [2024-10-24 20:44:39,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-24 20:44:39,915 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 464 transitions. [2024-10-24 20:44:39,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-10-24 20:44:39,918 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:44:39,918 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1] [2024-10-24 20:44:39,934 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-24 20:44:40,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-24 20:44:40,119 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting func_to_recursive_line_33_to_48_0Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-24 20:44:40,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:44:40,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1120310742, now seen corresponding path program 1 times [2024-10-24 20:44:40,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:44:40,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108401851] [2024-10-24 20:44:40,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:44:40,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:44:40,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 20:44:40,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [815900151] [2024-10-24 20:44:40,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:44:40,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:44:40,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 20:44:40,141 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 20:44:40,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-24 20:44:40,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:40,275 INFO L255 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-10-24 20:44:40,277 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 20:44:40,282 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 [2024-10-24 20:44:40,340 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 [2024-10-24 20:44:40,480 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 [2024-10-24 20:44:40,510 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 20:44:40,510 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 20:44:41,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:44:41,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108401851] [2024-10-24 20:44:41,238 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 20:44:41,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815900151] [2024-10-24 20:44:41,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815900151] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 20:44:41,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-24 20:44:41,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2024-10-24 20:44:41,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166624931] [2024-10-24 20:44:41,239 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-24 20:44:41,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-24 20:44:41,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:44:41,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-24 20:44:41,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2024-10-24 20:44:41,239 INFO L87 Difference]: Start difference. First operand 342 states and 464 transitions. Second operand has 13 states, 10 states have (on average 3.4) internal successors, (34), 11 states have internal predecessors, (34), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-24 20:44:45,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 20:44:45,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:44:45,928 INFO L93 Difference]: Finished difference Result 427 states and 500 transitions. [2024-10-24 20:44:45,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-24 20:44:45,928 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 3.4) internal successors, (34), 11 states have internal predecessors, (34), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 46 [2024-10-24 20:44:45,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:44:45,929 INFO L225 Difference]: With dead ends: 427 [2024-10-24 20:44:45,929 INFO L226 Difference]: Without dead ends: 426 [2024-10-24 20:44:45,930 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2024-10-24 20:44:45,930 INFO L432 NwaCegarLoop]: 135 mSDtfsCounter, 425 mSDsluCounter, 1061 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 24 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 1196 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-10-24 20:44:45,931 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 1196 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 325 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2024-10-24 20:44:45,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2024-10-24 20:44:45,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 342. [2024-10-24 20:44:45,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 244 states have (on average 1.6188524590163935) internal successors, (395), 302 states have internal predecessors, (395), 30 states have call successors, (30), 10 states have call predecessors, (30), 12 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2024-10-24 20:44:45,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 462 transitions. [2024-10-24 20:44:45,960 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 462 transitions. Word has length 46 [2024-10-24 20:44:45,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:44:45,960 INFO L471 AbstractCegarLoop]: Abstraction has 342 states and 462 transitions. [2024-10-24 20:44:45,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 3.4) internal successors, (34), 11 states have internal predecessors, (34), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-24 20:44:45,960 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 462 transitions. [2024-10-24 20:44:45,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-24 20:44:45,961 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:44:45,961 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 20:44:45,974 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-10-24 20:44:46,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-24 20:44:46,166 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting func_to_recursive_line_33_to_48_0Err24ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-24 20:44:46,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:44:46,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1475252626, now seen corresponding path program 1 times [2024-10-24 20:44:46,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:44:46,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386513807] [2024-10-24 20:44:46,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:44:46,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:44:46,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:46,759 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 20:44:46,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:46,762 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 20:44:46,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:46,765 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 20:44:46,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:46,766 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-24 20:44:46,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:46,770 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-24 20:44:46,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:46,772 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-24 20:44:46,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:44:46,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386513807] [2024-10-24 20:44:46,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386513807] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 20:44:46,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 20:44:46,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 20:44:46,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428817777] [2024-10-24 20:44:46,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 20:44:46,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 20:44:46,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:44:46,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 20:44:46,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 20:44:46,777 INFO L87 Difference]: Start difference. First operand 342 states and 462 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-24 20:44:46,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:44:46,831 INFO L93 Difference]: Finished difference Result 342 states and 462 transitions. [2024-10-24 20:44:46,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 20:44:46,832 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 55 [2024-10-24 20:44:46,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:44:46,834 INFO L225 Difference]: With dead ends: 342 [2024-10-24 20:44:46,834 INFO L226 Difference]: Without dead ends: 341 [2024-10-24 20:44:46,834 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 20:44:46,836 INFO L432 NwaCegarLoop]: 147 mSDtfsCounter, 1 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 20:44:46,836 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 431 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 20:44:46,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2024-10-24 20:44:46,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2024-10-24 20:44:46,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 244 states have (on average 1.610655737704918) internal successors, (393), 301 states have internal predecessors, (393), 30 states have call successors, (30), 10 states have call predecessors, (30), 12 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2024-10-24 20:44:46,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 460 transitions. [2024-10-24 20:44:46,856 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 460 transitions. Word has length 55 [2024-10-24 20:44:46,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:44:46,856 INFO L471 AbstractCegarLoop]: Abstraction has 341 states and 460 transitions. [2024-10-24 20:44:46,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-24 20:44:46,857 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 460 transitions. [2024-10-24 20:44:46,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-24 20:44:46,858 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:44:46,858 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 20:44:46,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-24 20:44:46,858 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting func_to_recursive_line_33_to_48_0Err18ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-24 20:44:46,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:44:46,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1475252178, now seen corresponding path program 1 times [2024-10-24 20:44:46,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:44:46,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031506555] [2024-10-24 20:44:46,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:44:46,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:44:46,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:47,245 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 20:44:47,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:47,249 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 20:44:47,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:47,251 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 20:44:47,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:47,257 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-24 20:44:47,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:47,259 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-24 20:44:47,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:47,262 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-24 20:44:47,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:44:47,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031506555] [2024-10-24 20:44:47,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031506555] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 20:44:47,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 20:44:47,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 20:44:47,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660196637] [2024-10-24 20:44:47,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 20:44:47,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 20:44:47,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:44:47,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 20:44:47,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 20:44:47,264 INFO L87 Difference]: Start difference. First operand 341 states and 460 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-24 20:44:47,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:44:47,315 INFO L93 Difference]: Finished difference Result 341 states and 460 transitions. [2024-10-24 20:44:47,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 20:44:47,316 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 55 [2024-10-24 20:44:47,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:44:47,317 INFO L225 Difference]: With dead ends: 341 [2024-10-24 20:44:47,317 INFO L226 Difference]: Without dead ends: 340 [2024-10-24 20:44:47,318 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 20:44:47,318 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 1 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 20:44:47,319 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 428 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 20:44:47,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2024-10-24 20:44:47,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2024-10-24 20:44:47,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 244 states have (on average 1.6024590163934427) internal successors, (391), 300 states have internal predecessors, (391), 30 states have call successors, (30), 10 states have call predecessors, (30), 12 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2024-10-24 20:44:47,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 458 transitions. [2024-10-24 20:44:47,338 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 458 transitions. Word has length 55 [2024-10-24 20:44:47,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:44:47,339 INFO L471 AbstractCegarLoop]: Abstraction has 340 states and 458 transitions. [2024-10-24 20:44:47,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-24 20:44:47,339 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 458 transitions. [2024-10-24 20:44:47,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-24 20:44:47,340 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:44:47,340 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 20:44:47,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-24 20:44:47,340 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting func_to_recursive_line_33_to_48_0Err25ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-24 20:44:47,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:44:47,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1511808750, now seen corresponding path program 1 times [2024-10-24 20:44:47,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:44:47,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110740549] [2024-10-24 20:44:47,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:44:47,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:44:47,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:47,668 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 20:44:47,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:47,672 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 20:44:47,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:47,675 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 20:44:47,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:47,677 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-24 20:44:47,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:47,680 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-24 20:44:47,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:47,683 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-24 20:44:47,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:44:47,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110740549] [2024-10-24 20:44:47,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110740549] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 20:44:47,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 20:44:47,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 20:44:47,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801651464] [2024-10-24 20:44:47,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 20:44:47,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 20:44:47,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:44:47,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 20:44:47,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 20:44:47,686 INFO L87 Difference]: Start difference. First operand 340 states and 458 transitions. Second operand has 7 states, 5 states have (on average 7.2) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 20:44:47,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:44:47,856 INFO L93 Difference]: Finished difference Result 346 states and 464 transitions. [2024-10-24 20:44:47,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 20:44:47,856 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 7.2) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 56 [2024-10-24 20:44:47,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:44:47,857 INFO L225 Difference]: With dead ends: 346 [2024-10-24 20:44:47,857 INFO L226 Difference]: Without dead ends: 345 [2024-10-24 20:44:47,858 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-10-24 20:44:47,858 INFO L432 NwaCegarLoop]: 134 mSDtfsCounter, 79 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 20:44:47,859 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 733 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 20:44:47,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2024-10-24 20:44:47,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 342. [2024-10-24 20:44:47,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 246 states have (on average 1.5975609756097562) internal successors, (393), 302 states have internal predecessors, (393), 30 states have call successors, (30), 10 states have call predecessors, (30), 12 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2024-10-24 20:44:47,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 460 transitions. [2024-10-24 20:44:47,880 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 460 transitions. Word has length 56 [2024-10-24 20:44:47,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:44:47,880 INFO L471 AbstractCegarLoop]: Abstraction has 342 states and 460 transitions. [2024-10-24 20:44:47,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 7.2) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 20:44:47,880 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 460 transitions. [2024-10-24 20:44:47,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-24 20:44:47,881 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:44:47,881 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 20:44:47,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-24 20:44:47,882 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting func_to_recursive_line_33_to_48_0Err19ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-24 20:44:47,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:44:47,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1511822652, now seen corresponding path program 1 times [2024-10-24 20:44:47,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:44:47,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480223077] [2024-10-24 20:44:47,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:44:47,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:44:47,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:48,157 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 20:44:48,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:48,160 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 20:44:48,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:48,162 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 20:44:48,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:48,165 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-24 20:44:48,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:48,167 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-24 20:44:48,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:48,169 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-24 20:44:48,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:44:48,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480223077] [2024-10-24 20:44:48,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480223077] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 20:44:48,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 20:44:48,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 20:44:48,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891297539] [2024-10-24 20:44:48,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 20:44:48,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 20:44:48,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:44:48,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 20:44:48,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 20:44:48,171 INFO L87 Difference]: Start difference. First operand 342 states and 460 transitions. Second operand has 7 states, 5 states have (on average 7.2) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 20:44:48,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:44:48,356 INFO L93 Difference]: Finished difference Result 345 states and 463 transitions. [2024-10-24 20:44:48,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 20:44:48,357 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 7.2) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 56 [2024-10-24 20:44:48,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:44:48,358 INFO L225 Difference]: With dead ends: 345 [2024-10-24 20:44:48,358 INFO L226 Difference]: Without dead ends: 344 [2024-10-24 20:44:48,358 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-10-24 20:44:48,359 INFO L432 NwaCegarLoop]: 134 mSDtfsCounter, 77 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 20:44:48,359 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 733 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 20:44:48,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2024-10-24 20:44:48,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2024-10-24 20:44:48,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 248 states have (on average 1.592741935483871) internal successors, (395), 304 states have internal predecessors, (395), 30 states have call successors, (30), 10 states have call predecessors, (30), 12 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2024-10-24 20:44:48,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 462 transitions. [2024-10-24 20:44:48,378 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 462 transitions. Word has length 56 [2024-10-24 20:44:48,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:44:48,378 INFO L471 AbstractCegarLoop]: Abstraction has 344 states and 462 transitions. [2024-10-24 20:44:48,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 7.2) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 20:44:48,378 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 462 transitions. [2024-10-24 20:44:48,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-10-24 20:44:48,379 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:44:48,379 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 20:44:48,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-24 20:44:48,379 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-24 20:44:48,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:44:48,379 INFO L85 PathProgramCache]: Analyzing trace with hash 378300059, now seen corresponding path program 1 times [2024-10-24 20:44:48,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:44:48,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553494258] [2024-10-24 20:44:48,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:44:48,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:44:48,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:48,596 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 20:44:48,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:48,603 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 20:44:48,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:48,619 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-24 20:44:48,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:48,748 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-24 20:44:48,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:48,751 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 20:44:48,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:48,755 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-24 20:44:48,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:48,761 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-24 20:44:48,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:44:48,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553494258] [2024-10-24 20:44:48,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553494258] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 20:44:48,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 20:44:48,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 20:44:48,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590418305] [2024-10-24 20:44:48,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 20:44:48,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 20:44:48,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:44:48,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 20:44:48,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-24 20:44:48,762 INFO L87 Difference]: Start difference. First operand 344 states and 462 transitions. Second operand has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-24 20:44:49,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:44:49,062 INFO L93 Difference]: Finished difference Result 346 states and 464 transitions. [2024-10-24 20:44:49,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 20:44:49,064 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 57 [2024-10-24 20:44:49,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:44:49,065 INFO L225 Difference]: With dead ends: 346 [2024-10-24 20:44:49,065 INFO L226 Difference]: Without dead ends: 345 [2024-10-24 20:44:49,066 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-10-24 20:44:49,066 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 105 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 20:44:49,066 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 678 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 20:44:49,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2024-10-24 20:44:49,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2024-10-24 20:44:49,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 249 states have (on average 1.5742971887550201) internal successors, (392), 304 states have internal predecessors, (392), 30 states have call successors, (30), 10 states have call predecessors, (30), 13 states have return successors, (38), 30 states have call predecessors, (38), 30 states have call successors, (38) [2024-10-24 20:44:49,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 460 transitions. [2024-10-24 20:44:49,092 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 460 transitions. Word has length 57 [2024-10-24 20:44:49,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:44:49,093 INFO L471 AbstractCegarLoop]: Abstraction has 345 states and 460 transitions. [2024-10-24 20:44:49,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-24 20:44:49,093 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 460 transitions. [2024-10-24 20:44:49,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-10-24 20:44:49,093 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:44:49,094 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 20:44:49,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-24 20:44:49,094 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting func_to_recursive_line_33_to_48_0Err26ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-24 20:44:49,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:44:49,094 INFO L85 PathProgramCache]: Analyzing trace with hash 378569108, now seen corresponding path program 1 times [2024-10-24 20:44:49,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:44:49,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753007612] [2024-10-24 20:44:49,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:44:49,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:44:49,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:49,300 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 20:44:49,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:49,302 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 20:44:49,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:49,303 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 20:44:49,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:49,306 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-24 20:44:49,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:49,309 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-24 20:44:49,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:49,312 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-24 20:44:49,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:44:49,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753007612] [2024-10-24 20:44:49,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753007612] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 20:44:49,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 20:44:49,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 20:44:49,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655547017] [2024-10-24 20:44:49,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 20:44:49,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 20:44:49,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:44:49,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 20:44:49,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 20:44:49,314 INFO L87 Difference]: Start difference. First operand 345 states and 460 transitions. Second operand has 6 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 20:44:49,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:44:49,459 INFO L93 Difference]: Finished difference Result 364 states and 468 transitions. [2024-10-24 20:44:49,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 20:44:49,460 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 57 [2024-10-24 20:44:49,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:44:49,461 INFO L225 Difference]: With dead ends: 364 [2024-10-24 20:44:49,461 INFO L226 Difference]: Without dead ends: 362 [2024-10-24 20:44:49,461 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-24 20:44:49,461 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 72 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 20:44:49,461 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 648 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 20:44:49,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2024-10-24 20:44:49,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 347. [2024-10-24 20:44:49,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 251 states have (on average 1.5697211155378485) internal successors, (394), 306 states have internal predecessors, (394), 30 states have call successors, (30), 10 states have call predecessors, (30), 13 states have return successors, (38), 30 states have call predecessors, (38), 30 states have call successors, (38) [2024-10-24 20:44:49,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 462 transitions. [2024-10-24 20:44:49,482 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 462 transitions. Word has length 57 [2024-10-24 20:44:49,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:44:49,482 INFO L471 AbstractCegarLoop]: Abstraction has 347 states and 462 transitions. [2024-10-24 20:44:49,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 20:44:49,483 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 462 transitions. [2024-10-24 20:44:49,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-10-24 20:44:49,483 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:44:49,483 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 20:44:49,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-24 20:44:49,483 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting func_to_recursive_line_33_to_48_0Err20ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-24 20:44:49,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:44:49,484 INFO L85 PathProgramCache]: Analyzing trace with hash 378138132, now seen corresponding path program 1 times [2024-10-24 20:44:49,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:44:49,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263953447] [2024-10-24 20:44:49,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:44:49,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:44:49,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:49,693 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 20:44:49,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:49,694 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 20:44:49,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:49,696 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 20:44:49,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:49,698 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-24 20:44:49,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:49,700 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-24 20:44:49,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:49,702 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-24 20:44:49,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:44:49,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263953447] [2024-10-24 20:44:49,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263953447] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 20:44:49,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 20:44:49,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 20:44:49,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728878090] [2024-10-24 20:44:49,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 20:44:49,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 20:44:49,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:44:49,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 20:44:49,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 20:44:49,704 INFO L87 Difference]: Start difference. First operand 347 states and 462 transitions. Second operand has 6 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 20:44:49,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:44:49,854 INFO L93 Difference]: Finished difference Result 382 states and 472 transitions. [2024-10-24 20:44:49,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 20:44:49,855 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 57 [2024-10-24 20:44:49,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:44:49,856 INFO L225 Difference]: With dead ends: 382 [2024-10-24 20:44:49,856 INFO L226 Difference]: Without dead ends: 380 [2024-10-24 20:44:49,857 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-24 20:44:49,857 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 105 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 20:44:49,857 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 674 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 20:44:49,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2024-10-24 20:44:49,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 347. [2024-10-24 20:44:49,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 251 states have (on average 1.5617529880478087) internal successors, (392), 306 states have internal predecessors, (392), 30 states have call successors, (30), 10 states have call predecessors, (30), 13 states have return successors, (38), 30 states have call predecessors, (38), 30 states have call successors, (38) [2024-10-24 20:44:49,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 460 transitions. [2024-10-24 20:44:49,891 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 460 transitions. Word has length 57 [2024-10-24 20:44:49,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:44:49,891 INFO L471 AbstractCegarLoop]: Abstraction has 347 states and 460 transitions. [2024-10-24 20:44:49,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 20:44:49,891 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 460 transitions. [2024-10-24 20:44:49,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-24 20:44:49,892 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:44:49,892 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 20:44:49,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-24 20:44:49,892 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-24 20:44:49,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:44:49,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1157599924, now seen corresponding path program 1 times [2024-10-24 20:44:49,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:44:49,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370571925] [2024-10-24 20:44:49,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:44:49,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:44:49,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:50,074 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 20:44:50,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:50,076 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 20:44:50,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:50,090 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-24 20:44:50,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:50,215 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-24 20:44:50,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:50,219 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 20:44:50,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:50,222 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-24 20:44:50,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:50,226 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-24 20:44:50,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:44:50,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370571925] [2024-10-24 20:44:50,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370571925] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 20:44:50,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 20:44:50,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 20:44:50,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269472974] [2024-10-24 20:44:50,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 20:44:50,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 20:44:50,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:44:50,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 20:44:50,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-24 20:44:50,228 INFO L87 Difference]: Start difference. First operand 347 states and 460 transitions. Second operand has 8 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-24 20:44:50,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:44:50,542 INFO L93 Difference]: Finished difference Result 347 states and 460 transitions. [2024-10-24 20:44:50,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 20:44:50,543 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 58 [2024-10-24 20:44:50,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:44:50,545 INFO L225 Difference]: With dead ends: 347 [2024-10-24 20:44:50,545 INFO L226 Difference]: Without dead ends: 346 [2024-10-24 20:44:50,545 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-10-24 20:44:50,546 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 104 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 20:44:50,546 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 678 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 20:44:50,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2024-10-24 20:44:50,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 346. [2024-10-24 20:44:50,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 251 states have (on average 1.545816733067729) internal successors, (388), 305 states have internal predecessors, (388), 30 states have call successors, (30), 10 states have call predecessors, (30), 13 states have return successors, (38), 30 states have call predecessors, (38), 30 states have call successors, (38) [2024-10-24 20:44:50,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 456 transitions. [2024-10-24 20:44:50,572 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 456 transitions. Word has length 58 [2024-10-24 20:44:50,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:44:50,572 INFO L471 AbstractCegarLoop]: Abstraction has 346 states and 456 transitions. [2024-10-24 20:44:50,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-24 20:44:50,573 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 456 transitions. [2024-10-24 20:44:50,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-24 20:44:50,573 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:44:50,573 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 20:44:50,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-24 20:44:50,573 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting func_to_recursive_line_33_to_48_0Err28ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-24 20:44:50,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:44:50,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1267304042, now seen corresponding path program 1 times [2024-10-24 20:44:50,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:44:50,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082141185] [2024-10-24 20:44:50,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:44:50,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:44:50,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:50,800 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 20:44:50,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:50,801 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 20:44:50,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:50,802 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 20:44:50,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:50,804 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-24 20:44:50,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:50,807 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-24 20:44:50,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:50,809 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-24 20:44:50,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:44:50,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082141185] [2024-10-24 20:44:50,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082141185] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 20:44:50,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 20:44:50,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 20:44:50,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635389249] [2024-10-24 20:44:50,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 20:44:50,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 20:44:50,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:44:50,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 20:44:50,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 20:44:50,812 INFO L87 Difference]: Start difference. First operand 346 states and 456 transitions. Second operand has 6 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 20:44:50,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:44:50,977 INFO L93 Difference]: Finished difference Result 388 states and 476 transitions. [2024-10-24 20:44:50,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 20:44:50,977 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 59 [2024-10-24 20:44:50,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:44:50,979 INFO L225 Difference]: With dead ends: 388 [2024-10-24 20:44:50,979 INFO L226 Difference]: Without dead ends: 386 [2024-10-24 20:44:50,979 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-24 20:44:50,980 INFO L432 NwaCegarLoop]: 135 mSDtfsCounter, 110 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 20:44:50,980 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 638 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 20:44:50,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2024-10-24 20:44:51,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 346. [2024-10-24 20:44:51,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 251 states have (on average 1.5378486055776892) internal successors, (386), 305 states have internal predecessors, (386), 30 states have call successors, (30), 10 states have call predecessors, (30), 13 states have return successors, (38), 30 states have call predecessors, (38), 30 states have call successors, (38) [2024-10-24 20:44:51,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 454 transitions. [2024-10-24 20:44:51,014 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 454 transitions. Word has length 59 [2024-10-24 20:44:51,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:44:51,014 INFO L471 AbstractCegarLoop]: Abstraction has 346 states and 454 transitions. [2024-10-24 20:44:51,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 20:44:51,015 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 454 transitions. [2024-10-24 20:44:51,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-24 20:44:51,015 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:44:51,016 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 20:44:51,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-24 20:44:51,016 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting func_to_recursive_line_33_to_48_0Err22ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-24 20:44:51,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:44:51,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1681472426, now seen corresponding path program 1 times [2024-10-24 20:44:51,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:44:51,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471450410] [2024-10-24 20:44:51,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:44:51,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:44:51,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:51,241 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 20:44:51,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:51,243 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 20:44:51,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:51,244 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 20:44:51,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:51,247 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-24 20:44:51,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:51,249 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-24 20:44:51,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:51,252 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-24 20:44:51,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:44:51,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471450410] [2024-10-24 20:44:51,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471450410] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 20:44:51,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 20:44:51,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 20:44:51,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736651144] [2024-10-24 20:44:51,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 20:44:51,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 20:44:51,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:44:51,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 20:44:51,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 20:44:51,257 INFO L87 Difference]: Start difference. First operand 346 states and 454 transitions. Second operand has 6 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 20:44:51,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:44:51,396 INFO L93 Difference]: Finished difference Result 362 states and 462 transitions. [2024-10-24 20:44:51,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 20:44:51,396 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 59 [2024-10-24 20:44:51,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:44:51,398 INFO L225 Difference]: With dead ends: 362 [2024-10-24 20:44:51,398 INFO L226 Difference]: Without dead ends: 360 [2024-10-24 20:44:51,398 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-24 20:44:51,398 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 69 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 20:44:51,399 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 645 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 20:44:51,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2024-10-24 20:44:51,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 350. [2024-10-24 20:44:51,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 255 states have (on average 1.5294117647058822) internal successors, (390), 309 states have internal predecessors, (390), 30 states have call successors, (30), 10 states have call predecessors, (30), 13 states have return successors, (38), 30 states have call predecessors, (38), 30 states have call successors, (38) [2024-10-24 20:44:51,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 458 transitions. [2024-10-24 20:44:51,422 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 458 transitions. Word has length 59 [2024-10-24 20:44:51,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:44:51,422 INFO L471 AbstractCegarLoop]: Abstraction has 350 states and 458 transitions. [2024-10-24 20:44:51,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 20:44:51,422 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 458 transitions. [2024-10-24 20:44:51,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-24 20:44:51,423 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:44:51,423 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 20:44:51,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-10-24 20:44:51,423 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-24 20:44:51,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:44:51,424 INFO L85 PathProgramCache]: Analyzing trace with hash 636962401, now seen corresponding path program 1 times [2024-10-24 20:44:51,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:44:51,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147127560] [2024-10-24 20:44:51,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:44:51,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:44:51,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 20:44:51,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1875725476] [2024-10-24 20:44:51,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:44:51,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:44:51,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 20:44:51,470 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 20:44:51,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-24 20:44:51,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:51,631 INFO L255 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-10-24 20:44:51,633 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 20:44:51,639 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 [2024-10-24 20:44:51,643 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 [2024-10-24 20:44:51,648 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 [2024-10-24 20:44:51,960 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 [2024-10-24 20:44:51,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 23 treesize of output 3 [2024-10-24 20:44:52,029 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 [2024-10-24 20:44:52,033 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 [2024-10-24 20:44:52,043 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-24 20:44:52,043 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 20:44:52,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:44:52,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147127560] [2024-10-24 20:44:52,324 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 20:44:52,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875725476] [2024-10-24 20:44:52,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875725476] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 20:44:52,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-24 20:44:52,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2024-10-24 20:44:52,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937828269] [2024-10-24 20:44:52,325 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-24 20:44:52,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 20:44:52,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:44:52,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 20:44:52,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2024-10-24 20:44:52,325 INFO L87 Difference]: Start difference. First operand 350 states and 458 transitions. Second operand has 10 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 20:44:56,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 20:44:56,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:44:56,688 INFO L93 Difference]: Finished difference Result 446 states and 544 transitions. [2024-10-24 20:44:56,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-24 20:44:56,688 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 64 [2024-10-24 20:44:56,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:44:56,690 INFO L225 Difference]: With dead ends: 446 [2024-10-24 20:44:56,690 INFO L226 Difference]: Without dead ends: 445 [2024-10-24 20:44:56,690 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 59 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=284, Unknown=0, NotChecked=0, Total=380 [2024-10-24 20:44:56,690 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 269 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-10-24 20:44:56,691 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 742 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 213 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2024-10-24 20:44:56,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2024-10-24 20:44:56,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 384. [2024-10-24 20:44:56,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 283 states have (on average 1.519434628975265) internal successors, (430), 338 states have internal predecessors, (430), 34 states have call successors, (34), 11 states have call predecessors, (34), 15 states have return successors, (45), 34 states have call predecessors, (45), 34 states have call successors, (45) [2024-10-24 20:44:56,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 509 transitions. [2024-10-24 20:44:56,716 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 509 transitions. Word has length 64 [2024-10-24 20:44:56,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:44:56,717 INFO L471 AbstractCegarLoop]: Abstraction has 384 states and 509 transitions. [2024-10-24 20:44:56,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 20:44:56,717 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 509 transitions. [2024-10-24 20:44:56,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-24 20:44:56,718 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:44:56,718 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 20:44:56,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-10-24 20:44:56,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-10-24 20:44:56,923 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-24 20:44:56,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:44:56,923 INFO L85 PathProgramCache]: Analyzing trace with hash -568169837, now seen corresponding path program 1 times [2024-10-24 20:44:56,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:44:56,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962335335] [2024-10-24 20:44:56,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:44:56,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:44:56,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 20:44:56,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [785857936] [2024-10-24 20:44:56,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:44:56,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:44:56,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 20:44:56,952 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 20:44:56,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-24 20:44:57,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:57,127 INFO L255 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-10-24 20:44:57,130 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 20:44:57,141 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 [2024-10-24 20:44:57,144 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 [2024-10-24 20:44:57,148 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 [2024-10-24 20:44:57,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 34 treesize of output 11 [2024-10-24 20:44:57,503 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 [2024-10-24 20:44:57,514 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-24 20:44:57,514 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 20:44:57,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:44:57,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962335335] [2024-10-24 20:44:57,762 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 20:44:57,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785857936] [2024-10-24 20:44:57,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785857936] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 20:44:57,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-24 20:44:57,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2024-10-24 20:44:57,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313150568] [2024-10-24 20:44:57,762 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-24 20:44:57,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 20:44:57,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:44:57,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 20:44:57,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2024-10-24 20:44:57,763 INFO L87 Difference]: Start difference. First operand 384 states and 509 transitions. Second operand has 10 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 20:44:58,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:44:58,283 INFO L93 Difference]: Finished difference Result 453 states and 539 transitions. [2024-10-24 20:44:58,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 20:44:58,283 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 64 [2024-10-24 20:44:58,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:44:58,285 INFO L225 Difference]: With dead ends: 453 [2024-10-24 20:44:58,286 INFO L226 Difference]: Without dead ends: 452 [2024-10-24 20:44:58,286 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 59 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2024-10-24 20:44:58,287 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 204 mSDsluCounter, 805 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 20:44:58,287 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 935 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 20:44:58,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2024-10-24 20:44:58,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 384. [2024-10-24 20:44:58,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 283 states have (on average 1.5159010600706713) internal successors, (429), 338 states have internal predecessors, (429), 34 states have call successors, (34), 11 states have call predecessors, (34), 15 states have return successors, (45), 34 states have call predecessors, (45), 34 states have call successors, (45) [2024-10-24 20:44:58,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 508 transitions. [2024-10-24 20:44:58,323 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 508 transitions. Word has length 64 [2024-10-24 20:44:58,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:44:58,323 INFO L471 AbstractCegarLoop]: Abstraction has 384 states and 508 transitions. [2024-10-24 20:44:58,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 20:44:58,323 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 508 transitions. [2024-10-24 20:44:58,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-24 20:44:58,324 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:44:58,324 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 20:44:58,338 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-10-24 20:44:58,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-10-24 20:44:58,524 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-10-24 20:44:58,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:44:58,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1626202324, now seen corresponding path program 1 times [2024-10-24 20:44:58,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:44:58,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672959533] [2024-10-24 20:44:58,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:44:58,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:44:58,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 20:44:58,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [464908084] [2024-10-24 20:44:58,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:44:58,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:44:58,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 20:44:58,555 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 20:44:58,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-24 20:44:58,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:44:58,710 INFO L255 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-24 20:44:58,712 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 20:44:58,762 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 [2024-10-24 20:44:59,006 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 [2024-10-24 20:44:59,010 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 [2024-10-24 20:44:59,023 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-24 20:44:59,023 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 20:44:59,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:44:59,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672959533] [2024-10-24 20:44:59,079 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 20:44:59,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464908084] [2024-10-24 20:44:59,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464908084] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 20:44:59,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-24 20:44:59,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-10-24 20:44:59,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113620233] [2024-10-24 20:44:59,080 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-24 20:44:59,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 20:44:59,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:44:59,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 20:44:59,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-10-24 20:44:59,081 INFO L87 Difference]: Start difference. First operand 384 states and 508 transitions. Second operand has 11 states, 9 states have (on average 5.0) internal successors, (45), 10 states have internal predecessors, (45), 4 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2024-10-24 20:45:03,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 20:45:07,115 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]