./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_ps3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursified_nla-digbench/recursified_ps3.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 d94a3da3db9550646108ab2896efbec5cb4c1aaac9b3aa0cc18eed94f30dde4d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 11:13:13,191 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 11:13:13,243 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 11:13:13,246 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 11:13:13,248 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 11:13:13,267 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 11:13:13,268 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 11:13:13,268 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 11:13:13,269 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 11:13:13,270 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 11:13:13,271 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 11:13:13,271 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 11:13:13,271 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 11:13:13,271 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 11:13:13,273 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 11:13:13,273 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 11:13:13,273 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 11:13:13,274 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 11:13:13,274 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 11:13:13,274 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 11:13:13,276 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 11:13:13,276 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 11:13:13,276 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 11:13:13,277 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 11:13:13,277 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 11:13:13,277 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 11:13:13,277 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 11:13:13,277 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 11:13:13,277 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 11:13:13,277 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 11:13:13,278 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 11:13:13,278 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 11:13:13,278 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 11:13:13,278 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 11:13:13,278 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 11:13:13,278 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 11:13:13,278 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 11:13:13,279 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 11:13:13,279 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 11:13:13,279 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 11:13:13,279 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 11:13:13,281 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 11:13:13,281 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 11:13:13,282 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 11:13:13,282 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d94a3da3db9550646108ab2896efbec5cb4c1aaac9b3aa0cc18eed94f30dde4d [2024-11-19 11:13:13,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 11:13:13,493 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 11:13:13,494 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 11:13:13,495 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 11:13:13,495 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 11:13:13,496 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_nla-digbench/recursified_ps3.c [2024-11-19 11:13:14,671 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 11:13:14,834 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 11:13:14,835 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_ps3.c [2024-11-19 11:13:14,841 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/143e82b97/39e961d388d949ccbeb6548549b99621/FLAG1588e7c0b [2024-11-19 11:13:15,256 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/143e82b97/39e961d388d949ccbeb6548549b99621 [2024-11-19 11:13:15,261 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 11:13:15,262 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 11:13:15,264 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 11:13:15,264 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 11:13:15,271 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 11:13:15,272 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:13:15" (1/1) ... [2024-11-19 11:13:15,272 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64885268 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:13:15, skipping insertion in model container [2024-11-19 11:13:15,274 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:13:15" (1/1) ... [2024-11-19 11:13:15,289 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 11:13:15,430 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 11:13:15,441 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 11:13:15,461 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 11:13:15,474 INFO L204 MainTranslator]: Completed translation [2024-11-19 11:13:15,474 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:13:15 WrapperNode [2024-11-19 11:13:15,474 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 11:13:15,475 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 11:13:15,475 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 11:13:15,475 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 11:13:15,480 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:13:15" (1/1) ... [2024-11-19 11:13:15,486 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:13:15" (1/1) ... [2024-11-19 11:13:15,499 INFO L138 Inliner]: procedures = 16, calls = 58, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 84 [2024-11-19 11:13:15,500 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 11:13:15,500 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 11:13:15,500 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 11:13:15,501 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 11:13:15,508 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:13:15" (1/1) ... [2024-11-19 11:13:15,508 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:13:15" (1/1) ... [2024-11-19 11:13:15,512 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:13:15" (1/1) ... [2024-11-19 11:13:15,524 INFO L175 MemorySlicer]: Split 36 memory accesses to 6 slices as follows [2, 6, 4, 17, 5, 2]. 47 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 6, 0, 0, 0, 0]. The 7 writes are split as follows [0, 0, 2, 2, 2, 1]. [2024-11-19 11:13:15,524 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:13:15" (1/1) ... [2024-11-19 11:13:15,525 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:13:15" (1/1) ... [2024-11-19 11:13:15,533 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:13:15" (1/1) ... [2024-11-19 11:13:15,534 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:13:15" (1/1) ... [2024-11-19 11:13:15,535 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:13:15" (1/1) ... [2024-11-19 11:13:15,536 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:13:15" (1/1) ... [2024-11-19 11:13:15,538 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 11:13:15,539 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 11:13:15,539 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 11:13:15,539 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 11:13:15,539 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:13:15" (1/1) ... [2024-11-19 11:13:15,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 11:13:15,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:13:15,562 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 11:13:15,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 11:13:15,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 11:13:15,594 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_25_to_33_0 [2024-11-19 11:13:15,594 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_25_to_33_0 [2024-11-19 11:13:15,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 11:13:15,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 11:13:15,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 11:13:15,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-19 11:13:15,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-19 11:13:15,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-19 11:13:15,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-19 11:13:15,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 11:13:15,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 11:13:15,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-19 11:13:15,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-19 11:13:15,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-19 11:13:15,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-19 11:13:15,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 11:13:15,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 11:13:15,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 11:13:15,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 11:13:15,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-19 11:13:15,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-19 11:13:15,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-19 11:13:15,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-19 11:13:15,597 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-19 11:13:15,597 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-19 11:13:15,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 11:13:15,669 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 11:13:15,670 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 11:13:16,057 INFO L? ?]: Removed 128 outVars from TransFormulas that were not future-live. [2024-11-19 11:13:16,058 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 11:13:16,068 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 11:13:16,068 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-19 11:13:16,069 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:13:16 BoogieIcfgContainer [2024-11-19 11:13:16,069 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 11:13:16,071 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 11:13:16,071 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 11:13:16,074 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 11:13:16,074 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 11:13:15" (1/3) ... [2024-11-19 11:13:16,075 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7810283 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 11:13:16, skipping insertion in model container [2024-11-19 11:13:16,075 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:13:15" (2/3) ... [2024-11-19 11:13:16,075 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7810283 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 11:13:16, skipping insertion in model container [2024-11-19 11:13:16,075 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:13:16" (3/3) ... [2024-11-19 11:13:16,076 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_ps3.c [2024-11-19 11:13:16,088 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 11:13:16,088 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 44 error locations. [2024-11-19 11:13:16,133 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 11:13:16,138 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;@28f1e09e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 11:13:16,138 INFO L334 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2024-11-19 11:13:16,141 INFO L276 IsEmpty]: Start isEmpty. Operand has 111 states, 60 states have (on average 1.7833333333333334) internal successors, (107), 105 states have internal predecessors, (107), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-19 11:13:16,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-19 11:13:16,145 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:13:16,145 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 11:13:16,146 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-11-19 11:13:16,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:13:16,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1421744413, now seen corresponding path program 1 times [2024-11-19 11:13:16,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:13:16,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550645843] [2024-11-19 11:13:16,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:16,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:13:16,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:13:16,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:13:16,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:13:16,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550645843] [2024-11-19 11:13:16,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550645843] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:13:16,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:13:16,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 11:13:16,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031106592] [2024-11-19 11:13:16,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:13:16,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 11:13:16,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:13:16,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 11:13:16,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 11:13:16,566 INFO L87 Difference]: Start difference. First operand has 111 states, 60 states have (on average 1.7833333333333334) internal successors, (107), 105 states have internal predecessors, (107), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 11:13:16,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:13:16,749 INFO L93 Difference]: Finished difference Result 276 states and 293 transitions. [2024-11-19 11:13:16,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 11:13:16,751 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-19 11:13:16,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:13:16,757 INFO L225 Difference]: With dead ends: 276 [2024-11-19 11:13:16,757 INFO L226 Difference]: Without dead ends: 162 [2024-11-19 11:13:16,760 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-19 11:13:16,762 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 137 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:13:16,762 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 472 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:13:16,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-11-19 11:13:16,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 129. [2024-11-19 11:13:16,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 78 states have (on average 1.7820512820512822) internal successors, (139), 122 states have internal predecessors, (139), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-19 11:13:16,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 148 transitions. [2024-11-19 11:13:16,801 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 148 transitions. Word has length 6 [2024-11-19 11:13:16,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:13:16,802 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 148 transitions. [2024-11-19 11:13:16,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 11:13:16,803 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 148 transitions. [2024-11-19 11:13:16,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-19 11:13:16,803 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:13:16,803 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:13:16,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 11:13:16,804 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_25_to_33_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-11-19 11:13:16,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:13:16,805 INFO L85 PathProgramCache]: Analyzing trace with hash -496779579, now seen corresponding path program 1 times [2024-11-19 11:13:16,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:13:16,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779943731] [2024-11-19 11:13:16,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:16,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:13:16,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:13:16,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:13:16,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:13:16,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779943731] [2024-11-19 11:13:16,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779943731] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:13:16,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:13:16,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 11:13:16,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545271224] [2024-11-19 11:13:16,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:13:16,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 11:13:16,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:13:16,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 11:13:16,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 11:13:16,988 INFO L87 Difference]: Start difference. First operand 129 states and 148 transitions. Second operand has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 11:13:17,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:13:17,186 INFO L93 Difference]: Finished difference Result 186 states and 189 transitions. [2024-11-19 11:13:17,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 11:13:17,187 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-19 11:13:17,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:13:17,188 INFO L225 Difference]: With dead ends: 186 [2024-11-19 11:13:17,188 INFO L226 Difference]: Without dead ends: 180 [2024-11-19 11:13:17,188 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-19 11:13:17,189 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 131 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 11:13:17,189 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 386 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 11:13:17,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-11-19 11:13:17,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 129. [2024-11-19 11:13:17,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 78 states have (on average 1.705128205128205) internal successors, (133), 122 states have internal predecessors, (133), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-19 11:13:17,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 142 transitions. [2024-11-19 11:13:17,209 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 142 transitions. Word has length 8 [2024-11-19 11:13:17,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:13:17,209 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 142 transitions. [2024-11-19 11:13:17,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 11:13:17,209 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 142 transitions. [2024-11-19 11:13:17,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-19 11:13:17,210 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:13:17,210 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:13:17,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 11:13:17,210 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_25_to_33_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-11-19 11:13:17,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:13:17,211 INFO L85 PathProgramCache]: Analyzing trace with hash 699573867, now seen corresponding path program 1 times [2024-11-19 11:13:17,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:13:17,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636809513] [2024-11-19 11:13:17,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:17,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:13:17,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:13:17,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:13:17,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:13:17,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636809513] [2024-11-19 11:13:17,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636809513] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:13:17,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:13:17,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 11:13:17,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114520774] [2024-11-19 11:13:17,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:13:17,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 11:13:17,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:13:17,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 11:13:17,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 11:13:17,486 INFO L87 Difference]: Start difference. First operand 129 states and 142 transitions. Second operand has 7 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 11:13:17,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:13:17,689 INFO L93 Difference]: Finished difference Result 156 states and 159 transitions. [2024-11-19 11:13:17,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 11:13:17,689 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-19 11:13:17,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:13:17,690 INFO L225 Difference]: With dead ends: 156 [2024-11-19 11:13:17,690 INFO L226 Difference]: Without dead ends: 155 [2024-11-19 11:13:17,691 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-19 11:13:17,691 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 123 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:13:17,691 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 441 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:13:17,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-11-19 11:13:17,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 129. [2024-11-19 11:13:17,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 78 states have (on average 1.6923076923076923) internal successors, (132), 122 states have internal predecessors, (132), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-19 11:13:17,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 141 transitions. [2024-11-19 11:13:17,707 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 141 transitions. Word has length 14 [2024-11-19 11:13:17,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:13:17,707 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 141 transitions. [2024-11-19 11:13:17,707 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 11:13:17,707 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 141 transitions. [2024-11-19 11:13:17,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-19 11:13:17,707 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:13:17,708 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:13:17,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 11:13:17,708 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_25_to_33_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-11-19 11:13:17,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:13:17,708 INFO L85 PathProgramCache]: Analyzing trace with hash 211953450, now seen corresponding path program 1 times [2024-11-19 11:13:17,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:13:17,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108828508] [2024-11-19 11:13:17,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:17,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:13:17,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:13:17,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1126417714] [2024-11-19 11:13:17,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:17,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:13:17,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:13:17,731 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:13:17,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 11:13:17,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:13:17,801 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-19 11:13:17,805 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:13:17,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:13:17,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:13:17,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:13:17,946 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 11:13:17,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:13:17,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108828508] [2024-11-19 11:13:17,947 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:13:17,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126417714] [2024-11-19 11:13:17,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126417714] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:13:17,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:13:17,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 11:13:17,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478129515] [2024-11-19 11:13:17,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:13:17,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 11:13:17,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:13:17,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 11:13:17,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-19 11:13:17,951 INFO L87 Difference]: Start difference. First operand 129 states and 141 transitions. Second operand has 7 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 11:13:18,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:13:18,179 INFO L93 Difference]: Finished difference Result 147 states and 150 transitions. [2024-11-19 11:13:18,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 11:13:18,180 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-19 11:13:18,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:13:18,180 INFO L225 Difference]: With dead ends: 147 [2024-11-19 11:13:18,181 INFO L226 Difference]: Without dead ends: 146 [2024-11-19 11:13:18,181 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-19 11:13:18,182 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 107 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 11:13:18,182 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 461 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 11:13:18,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-11-19 11:13:18,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 129. [2024-11-19 11:13:18,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 78 states have (on average 1.6794871794871795) internal successors, (131), 122 states have internal predecessors, (131), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-19 11:13:18,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 140 transitions. [2024-11-19 11:13:18,188 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 140 transitions. Word has length 15 [2024-11-19 11:13:18,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:13:18,188 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 140 transitions. [2024-11-19 11:13:18,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 11:13:18,188 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 140 transitions. [2024-11-19 11:13:18,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-19 11:13:18,189 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:13:18,189 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:13:18,201 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 11:13:18,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:13:18,394 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_25_to_33_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-11-19 11:13:18,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:13:18,394 INFO L85 PathProgramCache]: Analyzing trace with hash -2019377587, now seen corresponding path program 1 times [2024-11-19 11:13:18,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:13:18,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006450181] [2024-11-19 11:13:18,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:18,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:13:18,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:13:18,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:13:18,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:13:18,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006450181] [2024-11-19 11:13:18,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006450181] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:13:18,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:13:18,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 11:13:18,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333177136] [2024-11-19 11:13:18,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:13:18,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 11:13:18,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:13:18,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 11:13:18,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 11:13:18,481 INFO L87 Difference]: Start difference. First operand 129 states and 140 transitions. Second operand has 6 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 11:13:18,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:13:18,608 INFO L93 Difference]: Finished difference Result 178 states and 181 transitions. [2024-11-19 11:13:18,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 11:13:18,609 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-19 11:13:18,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:13:18,610 INFO L225 Difference]: With dead ends: 178 [2024-11-19 11:13:18,610 INFO L226 Difference]: Without dead ends: 174 [2024-11-19 11:13:18,610 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-19 11:13:18,611 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 99 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:13:18,611 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 399 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:13:18,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-11-19 11:13:18,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 129. [2024-11-19 11:13:18,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 78 states have (on average 1.6282051282051282) internal successors, (127), 122 states have internal predecessors, (127), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-19 11:13:18,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 136 transitions. [2024-11-19 11:13:18,620 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 136 transitions. Word has length 16 [2024-11-19 11:13:18,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:13:18,620 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 136 transitions. [2024-11-19 11:13:18,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 11:13:18,621 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 136 transitions. [2024-11-19 11:13:18,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-19 11:13:18,621 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:13:18,621 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:13:18,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 11:13:18,621 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_25_to_33_0Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-11-19 11:13:18,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:13:18,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1617665553, now seen corresponding path program 1 times [2024-11-19 11:13:18,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:13:18,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983302547] [2024-11-19 11:13:18,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:18,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:13:18,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:13:18,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1013298184] [2024-11-19 11:13:18,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:18,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:13:18,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:13:18,641 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:13:18,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 11:13:18,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:13:18,704 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-19 11:13:18,706 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:13:18,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:13:18,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:13:18,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:13:18,845 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 11:13:18,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:13:18,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983302547] [2024-11-19 11:13:18,846 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:13:18,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013298184] [2024-11-19 11:13:18,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013298184] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:13:18,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:13:18,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 11:13:18,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551171524] [2024-11-19 11:13:18,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:13:18,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 11:13:18,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:13:18,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 11:13:18,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 11:13:18,848 INFO L87 Difference]: Start difference. First operand 129 states and 136 transitions. Second operand has 8 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 11:13:19,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:13:19,100 INFO L93 Difference]: Finished difference Result 142 states and 145 transitions. [2024-11-19 11:13:19,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 11:13:19,100 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-19 11:13:19,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:13:19,101 INFO L225 Difference]: With dead ends: 142 [2024-11-19 11:13:19,101 INFO L226 Difference]: Without dead ends: 141 [2024-11-19 11:13:19,101 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-19 11:13:19,102 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 78 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 11:13:19,102 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 512 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 11:13:19,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-11-19 11:13:19,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 129. [2024-11-19 11:13:19,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 78 states have (on average 1.6153846153846154) internal successors, (126), 122 states have internal predecessors, (126), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-19 11:13:19,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 135 transitions. [2024-11-19 11:13:19,106 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 135 transitions. Word has length 20 [2024-11-19 11:13:19,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:13:19,107 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 135 transitions. [2024-11-19 11:13:19,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 11:13:19,107 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 135 transitions. [2024-11-19 11:13:19,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-19 11:13:19,107 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:13:19,107 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:13:19,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-19 11:13:19,308 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,SelfDestructingSolverStorable5 [2024-11-19 11:13:19,308 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_25_to_33_0Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-11-19 11:13:19,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:13:19,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1391975344, now seen corresponding path program 1 times [2024-11-19 11:13:19,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:13:19,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997256259] [2024-11-19 11:13:19,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:19,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:13:19,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:13:19,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1076391470] [2024-11-19 11:13:19,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:19,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:13:19,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:13:19,320 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:13:19,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 11:13:19,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:13:19,375 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-19 11:13:19,377 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:13:19,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:13:19,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:13:19,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:13:19,500 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 11:13:19,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:13:19,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997256259] [2024-11-19 11:13:19,500 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:13:19,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076391470] [2024-11-19 11:13:19,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076391470] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:13:19,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:13:19,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 11:13:19,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003550375] [2024-11-19 11:13:19,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:13:19,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 11:13:19,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:13:19,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 11:13:19,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 11:13:19,502 INFO L87 Difference]: Start difference. First operand 129 states and 135 transitions. Second operand has 8 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 11:13:19,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:13:19,687 INFO L93 Difference]: Finished difference Result 141 states and 144 transitions. [2024-11-19 11:13:19,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 11:13:19,687 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-19 11:13:19,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:13:19,688 INFO L225 Difference]: With dead ends: 141 [2024-11-19 11:13:19,688 INFO L226 Difference]: Without dead ends: 140 [2024-11-19 11:13:19,688 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-19 11:13:19,689 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 82 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:13:19,689 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 458 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:13:19,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-19 11:13:19,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 129. [2024-11-19 11:13:19,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 78 states have (on average 1.6025641025641026) internal successors, (125), 122 states have internal predecessors, (125), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-19 11:13:19,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 134 transitions. [2024-11-19 11:13:19,693 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 134 transitions. Word has length 21 [2024-11-19 11:13:19,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:13:19,693 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 134 transitions. [2024-11-19 11:13:19,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 11:13:19,693 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 134 transitions. [2024-11-19 11:13:19,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-19 11:13:19,694 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:13:19,694 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:13:19,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-19 11:13:19,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:13:19,899 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_25_to_33_0Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-11-19 11:13:19,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:13:19,899 INFO L85 PathProgramCache]: Analyzing trace with hash -201562637, now seen corresponding path program 1 times [2024-11-19 11:13:19,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:13:19,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980850325] [2024-11-19 11:13:19,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:19,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:13:19,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:13:20,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:13:20,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:13:20,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980850325] [2024-11-19 11:13:20,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980850325] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:13:20,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:13:20,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 11:13:20,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133481807] [2024-11-19 11:13:20,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:13:20,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 11:13:20,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:13:20,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 11:13:20,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 11:13:20,027 INFO L87 Difference]: Start difference. First operand 129 states and 134 transitions. Second operand has 7 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 11:13:20,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:13:20,210 INFO L93 Difference]: Finished difference Result 172 states and 175 transitions. [2024-11-19 11:13:20,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 11:13:20,210 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-19 11:13:20,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:13:20,211 INFO L225 Difference]: With dead ends: 172 [2024-11-19 11:13:20,211 INFO L226 Difference]: Without dead ends: 171 [2024-11-19 11:13:20,211 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-19 11:13:20,211 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 84 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:13:20,211 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 405 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:13:20,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-11-19 11:13:20,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 129. [2024-11-19 11:13:20,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 78 states have (on average 1.5897435897435896) internal successors, (124), 122 states have internal predecessors, (124), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-19 11:13:20,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 133 transitions. [2024-11-19 11:13:20,215 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 133 transitions. Word has length 22 [2024-11-19 11:13:20,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:13:20,216 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 133 transitions. [2024-11-19 11:13:20,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 11:13:20,216 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 133 transitions. [2024-11-19 11:13:20,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-19 11:13:20,216 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:13:20,216 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:13:20,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 11:13:20,217 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_25_to_33_0Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-11-19 11:13:20,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:13:20,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1953474382, now seen corresponding path program 1 times [2024-11-19 11:13:20,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:13:20,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670387224] [2024-11-19 11:13:20,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:20,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:13:20,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:13:20,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:13:20,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:13:20,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670387224] [2024-11-19 11:13:20,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670387224] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:13:20,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:13:20,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 11:13:20,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123446035] [2024-11-19 11:13:20,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:13:20,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 11:13:20,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:13:20,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 11:13:20,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 11:13:20,356 INFO L87 Difference]: Start difference. First operand 129 states and 133 transitions. Second operand has 6 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 11:13:20,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:13:20,528 INFO L93 Difference]: Finished difference Result 171 states and 174 transitions. [2024-11-19 11:13:20,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 11:13:20,528 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-19 11:13:20,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:13:20,529 INFO L225 Difference]: With dead ends: 171 [2024-11-19 11:13:20,529 INFO L226 Difference]: Without dead ends: 170 [2024-11-19 11:13:20,529 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-19 11:13:20,529 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 78 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 11:13:20,530 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 398 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 11:13:20,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-19 11:13:20,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 129. [2024-11-19 11:13:20,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 78 states have (on average 1.5769230769230769) internal successors, (123), 122 states have internal predecessors, (123), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-19 11:13:20,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 132 transitions. [2024-11-19 11:13:20,536 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 132 transitions. Word has length 23 [2024-11-19 11:13:20,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:13:20,536 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 132 transitions. [2024-11-19 11:13:20,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 11:13:20,537 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 132 transitions. [2024-11-19 11:13:20,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-19 11:13:20,537 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:13:20,537 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:13:20,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 11:13:20,537 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_25_to_33_0Err18ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-11-19 11:13:20,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:13:20,538 INFO L85 PathProgramCache]: Analyzing trace with hash 392268501, now seen corresponding path program 1 times [2024-11-19 11:13:20,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:13:20,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676509937] [2024-11-19 11:13:20,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:20,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:13:20,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:13:20,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:13:20,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:13:20,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676509937] [2024-11-19 11:13:20,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676509937] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:13:20,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:13:20,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 11:13:20,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800530044] [2024-11-19 11:13:20,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:13:20,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 11:13:20,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:13:20,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 11:13:20,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 11:13:20,679 INFO L87 Difference]: Start difference. First operand 129 states and 132 transitions. Second operand has 7 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 11:13:20,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:13:20,728 INFO L93 Difference]: Finished difference Result 170 states and 172 transitions. [2024-11-19 11:13:20,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 11:13:20,728 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2024-11-19 11:13:20,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:13:20,729 INFO L225 Difference]: With dead ends: 170 [2024-11-19 11:13:20,729 INFO L226 Difference]: Without dead ends: 169 [2024-11-19 11:13:20,730 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-19 11:13:20,730 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 68 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 11:13:20,730 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 499 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 11:13:20,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-11-19 11:13:20,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 130. [2024-11-19 11:13:20,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 79 states have (on average 1.5696202531645569) internal successors, (124), 123 states have internal predecessors, (124), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-19 11:13:20,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 133 transitions. [2024-11-19 11:13:20,734 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 133 transitions. Word has length 31 [2024-11-19 11:13:20,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:13:20,734 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 133 transitions. [2024-11-19 11:13:20,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 11:13:20,735 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 133 transitions. [2024-11-19 11:13:20,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-19 11:13:20,735 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:13:20,735 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:13:20,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 11:13:20,736 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_25_to_33_0Err19ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-11-19 11:13:20,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:13:20,736 INFO L85 PathProgramCache]: Analyzing trace with hash -724578278, now seen corresponding path program 1 times [2024-11-19 11:13:20,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:13:20,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631689280] [2024-11-19 11:13:20,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:20,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:13:20,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:13:20,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:13:20,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:13:20,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631689280] [2024-11-19 11:13:20,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631689280] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:13:20,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:13:20,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 11:13:20,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771450950] [2024-11-19 11:13:20,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:13:20,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 11:13:20,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:13:20,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 11:13:20,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-19 11:13:20,883 INFO L87 Difference]: Start difference. First operand 130 states and 133 transitions. Second operand has 7 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 11:13:20,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:13:20,948 INFO L93 Difference]: Finished difference Result 130 states and 133 transitions. [2024-11-19 11:13:20,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 11:13:20,948 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2024-11-19 11:13:20,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:13:20,950 INFO L225 Difference]: With dead ends: 130 [2024-11-19 11:13:20,950 INFO L226 Difference]: Without dead ends: 129 [2024-11-19 11:13:20,951 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-19 11:13:20,951 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 130 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 11:13:20,951 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 416 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 11:13:20,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-19 11:13:20,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2024-11-19 11:13:20,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 79 states have (on average 1.5569620253164558) internal successors, (123), 122 states have internal predecessors, (123), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-19 11:13:20,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 132 transitions. [2024-11-19 11:13:20,956 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 132 transitions. Word has length 32 [2024-11-19 11:13:20,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:13:20,956 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 132 transitions. [2024-11-19 11:13:20,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 11:13:20,956 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 132 transitions. [2024-11-19 11:13:20,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-19 11:13:20,957 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:13:20,957 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:13:20,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 11:13:20,957 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_25_to_33_0Err20ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-11-19 11:13:20,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:13:20,958 INFO L85 PathProgramCache]: Analyzing trace with hash -987090057, now seen corresponding path program 1 times [2024-11-19 11:13:20,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:13:20,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502999027] [2024-11-19 11:13:20,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:20,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:13:20,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:13:21,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:13:21,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:13:21,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502999027] [2024-11-19 11:13:21,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502999027] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:13:21,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:13:21,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 11:13:21,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321097767] [2024-11-19 11:13:21,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:13:21,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 11:13:21,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:13:21,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 11:13:21,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 11:13:21,041 INFO L87 Difference]: Start difference. First operand 129 states and 132 transitions. Second operand has 6 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 11:13:21,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:13:21,110 INFO L93 Difference]: Finished difference Result 167 states and 170 transitions. [2024-11-19 11:13:21,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 11:13:21,110 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2024-11-19 11:13:21,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:13:21,111 INFO L225 Difference]: With dead ends: 167 [2024-11-19 11:13:21,111 INFO L226 Difference]: Without dead ends: 165 [2024-11-19 11:13:21,111 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-19 11:13:21,112 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 64 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:13:21,112 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 424 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:13:21,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-11-19 11:13:21,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 132. [2024-11-19 11:13:21,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 82 states have (on average 1.5365853658536586) internal successors, (126), 125 states have internal predecessors, (126), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-19 11:13:21,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 135 transitions. [2024-11-19 11:13:21,116 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 135 transitions. Word has length 33 [2024-11-19 11:13:21,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:13:21,116 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 135 transitions. [2024-11-19 11:13:21,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 11:13:21,116 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 135 transitions. [2024-11-19 11:13:21,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-19 11:13:21,117 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:13:21,117 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:13:21,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 11:13:21,117 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-11-19 11:13:21,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:13:21,118 INFO L85 PathProgramCache]: Analyzing trace with hash -535299623, now seen corresponding path program 1 times [2024-11-19 11:13:21,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:13:21,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985188362] [2024-11-19 11:13:21,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:21,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:13:21,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:13:21,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:13:21,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:13:21,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985188362] [2024-11-19 11:13:21,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985188362] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:13:21,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:13:21,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 11:13:21,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933601928] [2024-11-19 11:13:21,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:13:21,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 11:13:21,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:13:21,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 11:13:21,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 11:13:21,196 INFO L87 Difference]: Start difference. First operand 132 states and 135 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 11:13:21,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:13:21,303 INFO L93 Difference]: Finished difference Result 165 states and 173 transitions. [2024-11-19 11:13:21,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 11:13:21,303 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2024-11-19 11:13:21,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:13:21,305 INFO L225 Difference]: With dead ends: 165 [2024-11-19 11:13:21,305 INFO L226 Difference]: Without dead ends: 163 [2024-11-19 11:13:21,305 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 11:13:21,306 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 63 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:13:21,307 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 263 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:13:21,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-11-19 11:13:21,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 137. [2024-11-19 11:13:21,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 86 states have (on average 1.5116279069767442) internal successors, (130), 128 states have internal predecessors, (130), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-19 11:13:21,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 140 transitions. [2024-11-19 11:13:21,327 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 140 transitions. Word has length 34 [2024-11-19 11:13:21,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:13:21,327 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 140 transitions. [2024-11-19 11:13:21,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 11:13:21,327 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 140 transitions. [2024-11-19 11:13:21,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-19 11:13:21,329 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:13:21,329 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:13:21,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 11:13:21,329 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting func_to_recursive_line_25_to_33_0Err22ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-11-19 11:13:21,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:13:21,329 INFO L85 PathProgramCache]: Analyzing trace with hash 594230297, now seen corresponding path program 1 times [2024-11-19 11:13:21,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:13:21,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55288613] [2024-11-19 11:13:21,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:21,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:13:21,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:13:21,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1139176940] [2024-11-19 11:13:21,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:21,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:13:21,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:13:21,350 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:13:21,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 11:13:21,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:13:21,426 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-19 11:13:21,429 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:13:21,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 11:13:21,546 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 26 treesize of output 14 [2024-11-19 11:13:21,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:13:21,555 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 11:13:21,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:13:21,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55288613] [2024-11-19 11:13:21,556 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:13:21,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139176940] [2024-11-19 11:13:21,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139176940] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:13:21,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:13:21,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 11:13:21,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448203674] [2024-11-19 11:13:21,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:13:21,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 11:13:21,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:13:21,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 11:13:21,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-19 11:13:21,557 INFO L87 Difference]: Start difference. First operand 137 states and 140 transitions. Second operand has 8 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 11:13:21,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:13:21,658 INFO L93 Difference]: Finished difference Result 167 states and 171 transitions. [2024-11-19 11:13:21,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 11:13:21,659 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2024-11-19 11:13:21,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:13:21,659 INFO L225 Difference]: With dead ends: 167 [2024-11-19 11:13:21,660 INFO L226 Difference]: Without dead ends: 165 [2024-11-19 11:13:21,660 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-19 11:13:21,660 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 187 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:13:21,660 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 327 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:13:21,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-11-19 11:13:21,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 135. [2024-11-19 11:13:21,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 86 states have (on average 1.4883720930232558) internal successors, (128), 126 states have internal predecessors, (128), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-19 11:13:21,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 138 transitions. [2024-11-19 11:13:21,665 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 138 transitions. Word has length 35 [2024-11-19 11:13:21,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:13:21,665 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 138 transitions. [2024-11-19 11:13:21,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 11:13:21,665 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 138 transitions. [2024-11-19 11:13:21,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-19 11:13:21,666 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:13:21,666 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:13:21,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-19 11:13:21,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:13:21,870 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-11-19 11:13:21,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:13:21,871 INFO L85 PathProgramCache]: Analyzing trace with hash 973141179, now seen corresponding path program 1 times [2024-11-19 11:13:21,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:13:21,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476019751] [2024-11-19 11:13:21,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:21,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:13:21,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:13:21,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:13:21,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:13:21,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476019751] [2024-11-19 11:13:21,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476019751] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:13:21,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:13:21,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 11:13:21,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440911364] [2024-11-19 11:13:21,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:13:21,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 11:13:21,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:13:21,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 11:13:21,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 11:13:21,937 INFO L87 Difference]: Start difference. First operand 135 states and 138 transitions. Second operand has 5 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 11:13:22,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:13:22,058 INFO L93 Difference]: Finished difference Result 165 states and 169 transitions. [2024-11-19 11:13:22,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 11:13:22,059 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 36 [2024-11-19 11:13:22,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:13:22,060 INFO L225 Difference]: With dead ends: 165 [2024-11-19 11:13:22,060 INFO L226 Difference]: Without dead ends: 159 [2024-11-19 11:13:22,060 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 11:13:22,060 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 68 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:13:22,061 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 236 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:13:22,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-11-19 11:13:22,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 141. [2024-11-19 11:13:22,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 92 states have (on average 1.4565217391304348) internal successors, (134), 132 states have internal predecessors, (134), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-19 11:13:22,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 144 transitions. [2024-11-19 11:13:22,065 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 144 transitions. Word has length 36 [2024-11-19 11:13:22,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:13:22,065 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 144 transitions. [2024-11-19 11:13:22,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 11:13:22,066 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 144 transitions. [2024-11-19 11:13:22,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-19 11:13:22,066 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:13:22,066 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:13:22,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 11:13:22,066 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting func_to_recursive_line_25_to_33_0Err23ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-11-19 11:13:22,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:13:22,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1241270110, now seen corresponding path program 1 times [2024-11-19 11:13:22,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:13:22,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126345667] [2024-11-19 11:13:22,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:22,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:13:22,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:13:22,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [689394002] [2024-11-19 11:13:22,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:22,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:13:22,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:13:22,081 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:13:22,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 11:13:22,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:13:22,153 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-19 11:13:22,155 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:13:22,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:13:22,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:13:22,246 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 11:13:22,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:13:22,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126345667] [2024-11-19 11:13:22,246 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:13:22,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689394002] [2024-11-19 11:13:22,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689394002] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:13:22,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:13:22,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 11:13:22,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489482622] [2024-11-19 11:13:22,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:13:22,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 11:13:22,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:13:22,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 11:13:22,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-19 11:13:22,248 INFO L87 Difference]: Start difference. First operand 141 states and 144 transitions. Second operand has 8 states, 6 states have (on average 5.5) internal successors, (33), 7 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 11:13:22,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:13:22,355 INFO L93 Difference]: Finished difference Result 170 states and 173 transitions. [2024-11-19 11:13:22,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 11:13:22,355 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.5) internal successors, (33), 7 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2024-11-19 11:13:22,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:13:22,356 INFO L225 Difference]: With dead ends: 170 [2024-11-19 11:13:22,356 INFO L226 Difference]: Without dead ends: 169 [2024-11-19 11:13:22,356 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-19 11:13:22,357 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 85 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:13:22,357 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 327 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:13:22,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-11-19 11:13:22,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 147. [2024-11-19 11:13:22,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 97 states have (on average 1.4329896907216495) internal successors, (139), 137 states have internal predecessors, (139), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-19 11:13:22,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 149 transitions. [2024-11-19 11:13:22,362 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 149 transitions. Word has length 36 [2024-11-19 11:13:22,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:13:22,362 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 149 transitions. [2024-11-19 11:13:22,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.5) internal successors, (33), 7 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 11:13:22,362 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 149 transitions. [2024-11-19 11:13:22,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-19 11:13:22,362 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:13:22,362 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:13:22,375 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 11:13:22,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-19 11:13:22,563 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting func_to_recursive_line_25_to_33_0Err24ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-11-19 11:13:22,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:13:22,564 INFO L85 PathProgramCache]: Analyzing trace with hash -175332165, now seen corresponding path program 1 times [2024-11-19 11:13:22,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:13:22,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48971356] [2024-11-19 11:13:22,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:22,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:13:22,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:13:22,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:13:22,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:13:22,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48971356] [2024-11-19 11:13:22,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48971356] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:13:22,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:13:22,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 11:13:22,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111303923] [2024-11-19 11:13:22,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:13:22,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 11:13:22,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:13:22,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 11:13:22,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 11:13:22,676 INFO L87 Difference]: Start difference. First operand 147 states and 149 transitions. Second operand has 7 states, 5 states have (on average 6.8) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 11:13:22,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:13:22,761 INFO L93 Difference]: Finished difference Result 151 states and 153 transitions. [2024-11-19 11:13:22,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 11:13:22,762 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 6.8) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2024-11-19 11:13:22,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:13:22,762 INFO L225 Difference]: With dead ends: 151 [2024-11-19 11:13:22,762 INFO L226 Difference]: Without dead ends: 150 [2024-11-19 11:13:22,763 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-19 11:13:22,763 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 40 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:13:22,763 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 482 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:13:22,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-19 11:13:22,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 148. [2024-11-19 11:13:22,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 98 states have (on average 1.4285714285714286) internal successors, (140), 138 states have internal predecessors, (140), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-19 11:13:22,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 150 transitions. [2024-11-19 11:13:22,768 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 150 transitions. Word has length 37 [2024-11-19 11:13:22,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:13:22,768 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 150 transitions. [2024-11-19 11:13:22,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 6.8) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 11:13:22,768 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 150 transitions. [2024-11-19 11:13:22,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-19 11:13:22,768 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:13:22,769 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:13:22,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-19 11:13:22,769 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting func_to_recursive_line_25_to_33_0Err25ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-11-19 11:13:22,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:13:22,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1140329728, now seen corresponding path program 1 times [2024-11-19 11:13:22,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:13:22,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811125621] [2024-11-19 11:13:22,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:22,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:13:22,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:13:22,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:13:22,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:13:22,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811125621] [2024-11-19 11:13:22,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811125621] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:13:22,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:13:22,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 11:13:22,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057703985] [2024-11-19 11:13:22,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:13:22,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 11:13:22,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:13:22,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 11:13:22,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 11:13:22,898 INFO L87 Difference]: Start difference. First operand 148 states and 150 transitions. Second operand has 6 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 11:13:22,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:13:22,970 INFO L93 Difference]: Finished difference Result 150 states and 152 transitions. [2024-11-19 11:13:22,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 11:13:22,970 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2024-11-19 11:13:22,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:13:22,971 INFO L225 Difference]: With dead ends: 150 [2024-11-19 11:13:22,971 INFO L226 Difference]: Without dead ends: 149 [2024-11-19 11:13:22,971 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-19 11:13:22,972 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 35 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 11:13:22,972 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 461 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 11:13:22,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-11-19 11:13:22,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2024-11-19 11:13:22,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 99 states have (on average 1.4242424242424243) internal successors, (141), 139 states have internal predecessors, (141), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-19 11:13:22,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 151 transitions. [2024-11-19 11:13:22,978 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 151 transitions. Word has length 38 [2024-11-19 11:13:22,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:13:22,978 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 151 transitions. [2024-11-19 11:13:22,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 11:13:22,979 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 151 transitions. [2024-11-19 11:13:22,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-19 11:13:22,979 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:13:22,979 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:13:22,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-19 11:13:22,979 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-11-19 11:13:22,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:13:22,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1054980605, now seen corresponding path program 1 times [2024-11-19 11:13:22,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:13:22,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113299691] [2024-11-19 11:13:22,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:22,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:13:22,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:13:22,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [602252647] [2024-11-19 11:13:22,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:22,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:13:22,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:13:23,000 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:13:23,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 11:13:23,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:13:23,082 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-19 11:13:23,084 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:13:23,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:13:23,092 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:13:23,276 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 19 treesize of output 11 [2024-11-19 11:13:23,303 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:13:23,303 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:13:23,548 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:13:23,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:13:23,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113299691] [2024-11-19 11:13:23,548 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:13:23,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602252647] [2024-11-19 11:13:23,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602252647] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:13:23,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 11:13:23,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 20 [2024-11-19 11:13:23,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529063657] [2024-11-19 11:13:23,549 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 11:13:23,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-19 11:13:23,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:13:23,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-19 11:13:23,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2024-11-19 11:13:23,550 INFO L87 Difference]: Start difference. First operand 149 states and 151 transitions. Second operand has 21 states, 18 states have (on average 4.166666666666667) internal successors, (75), 17 states have internal predecessors, (75), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 11:13:24,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:13:24,353 INFO L93 Difference]: Finished difference Result 228 states and 235 transitions. [2024-11-19 11:13:24,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-19 11:13:24,353 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 4.166666666666667) internal successors, (75), 17 states have internal predecessors, (75), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2024-11-19 11:13:24,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:13:24,355 INFO L225 Difference]: With dead ends: 228 [2024-11-19 11:13:24,355 INFO L226 Difference]: Without dead ends: 225 [2024-11-19 11:13:24,355 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=238, Invalid=952, Unknown=0, NotChecked=0, Total=1190 [2024-11-19 11:13:24,356 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 543 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 11:13:24,356 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 701 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 11:13:24,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2024-11-19 11:13:24,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 177. [2024-11-19 11:13:24,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 124 states have (on average 1.4596774193548387) internal successors, (181), 163 states have internal predecessors, (181), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-19 11:13:24,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 199 transitions. [2024-11-19 11:13:24,362 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 199 transitions. Word has length 42 [2024-11-19 11:13:24,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:13:24,362 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 199 transitions. [2024-11-19 11:13:24,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 4.166666666666667) internal successors, (75), 17 states have internal predecessors, (75), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 11:13:24,362 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 199 transitions. [2024-11-19 11:13:24,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-19 11:13:24,363 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:13:24,363 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:13:24,377 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 11:13:24,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:13:24,564 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-11-19 11:13:24,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:13:24,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1896299167, now seen corresponding path program 1 times [2024-11-19 11:13:24,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:13:24,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291087885] [2024-11-19 11:13:24,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:24,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:13:24,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:13:24,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:13:24,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:13:24,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291087885] [2024-11-19 11:13:24,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291087885] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:13:24,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:13:24,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 11:13:24,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953630844] [2024-11-19 11:13:24,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:13:24,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 11:13:24,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:13:24,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 11:13:24,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 11:13:24,757 INFO L87 Difference]: Start difference. First operand 177 states and 199 transitions. Second operand has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 11:13:25,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:13:25,124 INFO L93 Difference]: Finished difference Result 192 states and 218 transitions. [2024-11-19 11:13:25,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 11:13:25,125 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2024-11-19 11:13:25,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:13:25,126 INFO L225 Difference]: With dead ends: 192 [2024-11-19 11:13:25,126 INFO L226 Difference]: Without dead ends: 191 [2024-11-19 11:13:25,126 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 11:13:25,126 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 45 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 11:13:25,126 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 317 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 11:13:25,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-11-19 11:13:25,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 178. [2024-11-19 11:13:25,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 125 states have (on average 1.456) internal successors, (182), 164 states have internal predecessors, (182), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-19 11:13:25,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 200 transitions. [2024-11-19 11:13:25,132 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 200 transitions. Word has length 42 [2024-11-19 11:13:25,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:13:25,132 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 200 transitions. [2024-11-19 11:13:25,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 11:13:25,132 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 200 transitions. [2024-11-19 11:13:25,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-19 11:13:25,133 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:13:25,133 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:13:25,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-19 11:13:25,133 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-11-19 11:13:25,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:13:25,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1344268088, now seen corresponding path program 1 times [2024-11-19 11:13:25,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:13:25,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528034034] [2024-11-19 11:13:25,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:25,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:13:25,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:13:25,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1459539758] [2024-11-19 11:13:25,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:25,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:13:25,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:13:25,150 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:13:25,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 11:13:25,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:13:25,229 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 11:13:25,233 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:13:25,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:13:25,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:13:25,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:13:25,339 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 11:13:25,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:13:25,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528034034] [2024-11-19 11:13:25,339 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:13:25,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459539758] [2024-11-19 11:13:25,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459539758] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:13:25,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:13:25,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 11:13:25,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201549909] [2024-11-19 11:13:25,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:13:25,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 11:13:25,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:13:25,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 11:13:25,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 11:13:25,341 INFO L87 Difference]: Start difference. First operand 178 states and 200 transitions. Second operand has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 11:13:25,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:13:25,442 INFO L93 Difference]: Finished difference Result 192 states and 217 transitions. [2024-11-19 11:13:25,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 11:13:25,442 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 43 [2024-11-19 11:13:25,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:13:25,443 INFO L225 Difference]: With dead ends: 192 [2024-11-19 11:13:25,443 INFO L226 Difference]: Without dead ends: 191 [2024-11-19 11:13:25,444 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-19 11:13:25,444 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 52 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:13:25,444 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 283 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:13:25,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-11-19 11:13:25,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 179. [2024-11-19 11:13:25,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 126 states have (on average 1.4523809523809523) internal successors, (183), 165 states have internal predecessors, (183), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-19 11:13:25,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 201 transitions. [2024-11-19 11:13:25,450 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 201 transitions. Word has length 43 [2024-11-19 11:13:25,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:13:25,450 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 201 transitions. [2024-11-19 11:13:25,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 11:13:25,450 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 201 transitions. [2024-11-19 11:13:25,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-19 11:13:25,450 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:13:25,451 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-19 11:13:25,463 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 11:13:25,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:13:25,652 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting func_to_recursive_line_25_to_33_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-11-19 11:13:25,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:13:25,656 INFO L85 PathProgramCache]: Analyzing trace with hash -224078363, now seen corresponding path program 1 times [2024-11-19 11:13:25,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:13:25,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83116047] [2024-11-19 11:13:25,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:25,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:13:25,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:13:25,852 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:13:25,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:13:25,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83116047] [2024-11-19 11:13:25,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83116047] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:13:25,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856713876] [2024-11-19 11:13:25,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:25,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:13:25,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:13:25,854 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:13:25,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 11:13:25,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:13:25,950 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-19 11:13:25,951 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:13:26,058 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 38 treesize of output 15 [2024-11-19 11:13:26,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-19 11:13:26,107 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:13:26,108 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:13:26,229 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:13:26,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856713876] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:13:26,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 11:13:26,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 20 [2024-11-19 11:13:26,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466539042] [2024-11-19 11:13:26,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 11:13:26,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-19 11:13:26,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:13:26,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-19 11:13:26,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2024-11-19 11:13:26,231 INFO L87 Difference]: Start difference. First operand 179 states and 201 transitions. Second operand has 21 states, 19 states have (on average 5.842105263157895) internal successors, (111), 17 states have internal predecessors, (111), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 11:13:26,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:13:26,565 INFO L93 Difference]: Finished difference Result 191 states and 213 transitions. [2024-11-19 11:13:26,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 11:13:26,567 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 5.842105263157895) internal successors, (111), 17 states have internal predecessors, (111), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 44 [2024-11-19 11:13:26,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:13:26,567 INFO L225 Difference]: With dead ends: 191 [2024-11-19 11:13:26,567 INFO L226 Difference]: Without dead ends: 190 [2024-11-19 11:13:26,568 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 75 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2024-11-19 11:13:26,568 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 392 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 11:13:26,568 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 730 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 11:13:26,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-11-19 11:13:26,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 178. [2024-11-19 11:13:26,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 126 states have (on average 1.4365079365079365) internal successors, (181), 164 states have internal predecessors, (181), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-19 11:13:26,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 199 transitions. [2024-11-19 11:13:26,577 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 199 transitions. Word has length 44 [2024-11-19 11:13:26,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:13:26,577 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 199 transitions. [2024-11-19 11:13:26,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 5.842105263157895) internal successors, (111), 17 states have internal predecessors, (111), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 11:13:26,577 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 199 transitions. [2024-11-19 11:13:26,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-19 11:13:26,578 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:13:26,578 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:13:26,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-19 11:13:26,781 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,SelfDestructingSolverStorable21 [2024-11-19 11:13:26,782 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-11-19 11:13:26,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:13:26,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1277362109, now seen corresponding path program 1 times [2024-11-19 11:13:26,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:13:26,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891661066] [2024-11-19 11:13:26,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:26,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:13:26,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:13:26,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:13:26,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:13:26,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891661066] [2024-11-19 11:13:26,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891661066] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:13:26,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:13:26,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 11:13:26,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178798347] [2024-11-19 11:13:26,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:13:26,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 11:13:26,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:13:26,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 11:13:26,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 11:13:26,860 INFO L87 Difference]: Start difference. First operand 178 states and 199 transitions. Second operand has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 11:13:27,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:13:27,000 INFO L93 Difference]: Finished difference Result 192 states and 214 transitions. [2024-11-19 11:13:27,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 11:13:27,000 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2024-11-19 11:13:27,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:13:27,001 INFO L225 Difference]: With dead ends: 192 [2024-11-19 11:13:27,001 INFO L226 Difference]: Without dead ends: 191 [2024-11-19 11:13:27,002 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-19 11:13:27,002 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 43 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:13:27,002 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 275 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:13:27,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-11-19 11:13:27,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 179. [2024-11-19 11:13:27,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 127 states have (on average 1.4330708661417322) internal successors, (182), 165 states have internal predecessors, (182), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-19 11:13:27,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 200 transitions. [2024-11-19 11:13:27,008 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 200 transitions. Word has length 44 [2024-11-19 11:13:27,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:13:27,008 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 200 transitions. [2024-11-19 11:13:27,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 11:13:27,009 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 200 transitions. [2024-11-19 11:13:27,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-19 11:13:27,009 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:13:27,009 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-19 11:13:27,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-19 11:13:27,009 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting func_to_recursive_line_25_to_33_0Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-11-19 11:13:27,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:13:27,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1643505380, now seen corresponding path program 1 times [2024-11-19 11:13:27,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:13:27,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209836528] [2024-11-19 11:13:27,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:27,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:13:27,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:13:27,203 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:13:27,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:13:27,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209836528] [2024-11-19 11:13:27,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209836528] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:13:27,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868338874] [2024-11-19 11:13:27,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:27,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:13:27,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:13:27,206 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:13:27,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 11:13:27,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:13:27,295 INFO L255 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-19 11:13:27,296 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:13:27,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 11:13:27,397 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 36 treesize of output 13 [2024-11-19 11:13:27,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-19 11:13:27,413 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:13:27,413 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:13:27,521 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:13:27,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868338874] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:13:27,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 11:13:27,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 20 [2024-11-19 11:13:27,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50552975] [2024-11-19 11:13:27,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 11:13:27,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-19 11:13:27,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:13:27,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-19 11:13:27,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2024-11-19 11:13:27,523 INFO L87 Difference]: Start difference. First operand 179 states and 200 transitions. Second operand has 21 states, 17 states have (on average 6.352941176470588) internal successors, (108), 16 states have internal predecessors, (108), 8 states have call successors, (8), 7 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 11:13:27,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:13:27,991 INFO L93 Difference]: Finished difference Result 269 states and 278 transitions. [2024-11-19 11:13:27,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-19 11:13:27,992 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 6.352941176470588) internal successors, (108), 16 states have internal predecessors, (108), 8 states have call successors, (8), 7 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2024-11-19 11:13:27,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:13:27,993 INFO L225 Difference]: With dead ends: 269 [2024-11-19 11:13:27,993 INFO L226 Difference]: Without dead ends: 267 [2024-11-19 11:13:27,993 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=174, Invalid=638, Unknown=0, NotChecked=0, Total=812 [2024-11-19 11:13:27,993 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 395 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 11:13:27,994 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 752 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 11:13:27,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2024-11-19 11:13:27,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 215. [2024-11-19 11:13:28,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 159 states have (on average 1.4591194968553458) internal successors, (232), 198 states have internal predecessors, (232), 8 states have call successors, (8), 6 states have call predecessors, (8), 10 states have return successors, (16), 10 states have call predecessors, (16), 8 states have call successors, (16) [2024-11-19 11:13:28,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 256 transitions. [2024-11-19 11:13:28,000 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 256 transitions. Word has length 45 [2024-11-19 11:13:28,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:13:28,001 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 256 transitions. [2024-11-19 11:13:28,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 6.352941176470588) internal successors, (108), 16 states have internal predecessors, (108), 8 states have call successors, (8), 7 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 11:13:28,001 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 256 transitions. [2024-11-19 11:13:28,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-19 11:13:28,001 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:13:28,001 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:13:28,014 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-19 11:13:28,205 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,SelfDestructingSolverStorable23 [2024-11-19 11:13:28,205 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-11-19 11:13:28,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:13:28,206 INFO L85 PathProgramCache]: Analyzing trace with hash -943519590, now seen corresponding path program 1 times [2024-11-19 11:13:28,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:13:28,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724370402] [2024-11-19 11:13:28,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:28,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:13:28,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:13:28,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:13:28,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:13:28,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724370402] [2024-11-19 11:13:28,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724370402] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:13:28,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:13:28,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 11:13:28,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993747871] [2024-11-19 11:13:28,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:13:28,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 11:13:28,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:13:28,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 11:13:28,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 11:13:28,298 INFO L87 Difference]: Start difference. First operand 215 states and 256 transitions. Second operand has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 11:13:28,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:13:28,452 INFO L93 Difference]: Finished difference Result 227 states and 269 transitions. [2024-11-19 11:13:28,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 11:13:28,453 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2024-11-19 11:13:28,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:13:28,454 INFO L225 Difference]: With dead ends: 227 [2024-11-19 11:13:28,454 INFO L226 Difference]: Without dead ends: 226 [2024-11-19 11:13:28,454 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-19 11:13:28,454 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 41 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:13:28,454 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 277 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:13:28,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2024-11-19 11:13:28,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 216. [2024-11-19 11:13:28,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 160 states have (on average 1.45625) internal successors, (233), 199 states have internal predecessors, (233), 8 states have call successors, (8), 6 states have call predecessors, (8), 10 states have return successors, (16), 10 states have call predecessors, (16), 8 states have call successors, (16) [2024-11-19 11:13:28,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 257 transitions. [2024-11-19 11:13:28,464 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 257 transitions. Word has length 45 [2024-11-19 11:13:28,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:13:28,464 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 257 transitions. [2024-11-19 11:13:28,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 11:13:28,465 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 257 transitions. [2024-11-19 11:13:28,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-19 11:13:28,465 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:13:28,465 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] [2024-11-19 11:13:28,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-19 11:13:28,465 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting func_to_recursive_line_25_to_33_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-11-19 11:13:28,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:13:28,466 INFO L85 PathProgramCache]: Analyzing trace with hash -590940729, now seen corresponding path program 1 times [2024-11-19 11:13:28,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:13:28,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020445301] [2024-11-19 11:13:28,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:28,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:13:28,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:13:28,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [336006012] [2024-11-19 11:13:28,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:28,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:13:28,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:13:28,484 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:13:28,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 11:13:28,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:13:28,574 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-19 11:13:28,576 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:13:28,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 11:13:28,649 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 36 treesize of output 13 [2024-11-19 11:13:28,684 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 22 treesize of output 10 [2024-11-19 11:13:28,694 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:13:28,694 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:13:28,852 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:13:28,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:13:28,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020445301] [2024-11-19 11:13:28,852 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:13:28,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336006012] [2024-11-19 11:13:28,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336006012] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:13:28,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 11:13:28,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2024-11-19 11:13:28,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17564225] [2024-11-19 11:13:28,852 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 11:13:28,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-19 11:13:28,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:13:28,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-19 11:13:28,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2024-11-19 11:13:28,853 INFO L87 Difference]: Start difference. First operand 216 states and 257 transitions. Second operand has 17 states, 14 states have (on average 5.714285714285714) internal successors, (80), 14 states have internal predecessors, (80), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 11:13:30,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:13:30,107 INFO L93 Difference]: Finished difference Result 224 states and 265 transitions. [2024-11-19 11:13:30,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-19 11:13:30,108 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 5.714285714285714) internal successors, (80), 14 states have internal predecessors, (80), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 46 [2024-11-19 11:13:30,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:13:30,109 INFO L225 Difference]: With dead ends: 224 [2024-11-19 11:13:30,109 INFO L226 Difference]: Without dead ends: 223 [2024-11-19 11:13:30,109 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 71 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=159, Invalid=491, Unknown=0, NotChecked=0, Total=650 [2024-11-19 11:13:30,110 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 340 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:13:30,110 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 548 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 417 Invalid, 1 Unknown, 0 Unchecked, 1.1s Time] [2024-11-19 11:13:30,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2024-11-19 11:13:30,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 215. [2024-11-19 11:13:30,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 160 states have (on average 1.4375) internal successors, (230), 198 states have internal predecessors, (230), 8 states have call successors, (8), 6 states have call predecessors, (8), 10 states have return successors, (16), 10 states have call predecessors, (16), 8 states have call successors, (16) [2024-11-19 11:13:30,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 254 transitions. [2024-11-19 11:13:30,119 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 254 transitions. Word has length 46 [2024-11-19 11:13:30,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:13:30,119 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 254 transitions. [2024-11-19 11:13:30,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 5.714285714285714) internal successors, (80), 14 states have internal predecessors, (80), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 11:13:30,120 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 254 transitions. [2024-11-19 11:13:30,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-19 11:13:30,120 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:13:30,120 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:13:30,133 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-19 11:13:30,324 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,SelfDestructingSolverStorable25 [2024-11-19 11:13:30,325 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-11-19 11:13:30,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:13:30,325 INFO L85 PathProgramCache]: Analyzing trace with hash 815663909, now seen corresponding path program 1 times [2024-11-19 11:13:30,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:13:30,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773617355] [2024-11-19 11:13:30,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:30,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:13:30,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:13:30,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1102780809] [2024-11-19 11:13:30,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:30,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:13:30,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:13:30,343 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) [2024-11-19 11:13:30,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 11:13:30,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:13:30,425 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-19 11:13:30,427 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:13:30,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:13:30,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:13:30,496 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 11:13:30,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:13:30,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773617355] [2024-11-19 11:13:30,497 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:13:30,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102780809] [2024-11-19 11:13:30,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102780809] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:13:30,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:13:30,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 11:13:30,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075773225] [2024-11-19 11:13:30,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:13:30,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 11:13:30,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:13:30,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 11:13:30,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 11:13:30,498 INFO L87 Difference]: Start difference. First operand 215 states and 254 transitions. Second operand has 5 states, 4 states have (on average 10.5) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 11:13:30,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:13:30,574 INFO L93 Difference]: Finished difference Result 225 states and 265 transitions. [2024-11-19 11:13:30,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 11:13:30,574 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.5) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 46 [2024-11-19 11:13:30,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:13:30,575 INFO L225 Difference]: With dead ends: 225 [2024-11-19 11:13:30,575 INFO L226 Difference]: Without dead ends: 223 [2024-11-19 11:13:30,575 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 11:13:30,576 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 37 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:13:30,576 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 236 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:13:30,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2024-11-19 11:13:30,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 217. [2024-11-19 11:13:30,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 162 states have (on average 1.4320987654320987) internal successors, (232), 200 states have internal predecessors, (232), 8 states have call successors, (8), 6 states have call predecessors, (8), 10 states have return successors, (16), 10 states have call predecessors, (16), 8 states have call successors, (16) [2024-11-19 11:13:30,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 256 transitions. [2024-11-19 11:13:30,584 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 256 transitions. Word has length 46 [2024-11-19 11:13:30,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:13:30,584 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 256 transitions. [2024-11-19 11:13:30,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.5) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 11:13:30,585 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 256 transitions. [2024-11-19 11:13:30,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-19 11:13:30,585 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:13:30,585 INFO L215 NwaCegarLoop]: trace histogram [2, 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] [2024-11-19 11:13:30,598 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-19 11:13:30,789 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,SelfDestructingSolverStorable26 [2024-11-19 11:13:30,790 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting func_to_recursive_line_25_to_33_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-11-19 11:13:30,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:13:30,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1139293370, now seen corresponding path program 1 times [2024-11-19 11:13:30,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:13:30,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271467132] [2024-11-19 11:13:30,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:30,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:13:30,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:13:30,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [650235382] [2024-11-19 11:13:30,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:30,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:13:30,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:13:30,809 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) [2024-11-19 11:13:30,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-19 11:13:30,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:13:30,903 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-19 11:13:30,905 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:13:30,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:13:30,979 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 19 treesize of output 11 [2024-11-19 11:13:31,021 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:13:31,021 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:13:32,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:13:32,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271467132] [2024-11-19 11:13:32,488 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:13:32,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650235382] [2024-11-19 11:13:32,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650235382] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:13:32,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-19 11:13:32,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-11-19 11:13:32,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006360397] [2024-11-19 11:13:32,488 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-19 11:13:32,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 11:13:32,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:13:32,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 11:13:32,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=221, Unknown=1, NotChecked=0, Total=272 [2024-11-19 11:13:32,489 INFO L87 Difference]: Start difference. First operand 217 states and 256 transitions. Second operand has 11 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 11:13:32,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:13:32,674 INFO L93 Difference]: Finished difference Result 239 states and 263 transitions. [2024-11-19 11:13:32,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 11:13:32,675 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 47 [2024-11-19 11:13:32,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:13:32,676 INFO L225 Difference]: With dead ends: 239 [2024-11-19 11:13:32,677 INFO L226 Difference]: Without dead ends: 238 [2024-11-19 11:13:32,677 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=99, Invalid=362, Unknown=1, NotChecked=0, Total=462 [2024-11-19 11:13:32,678 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 183 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:13:32,678 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 458 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:13:32,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-11-19 11:13:32,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 217. [2024-11-19 11:13:32,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 162 states have (on average 1.4259259259259258) internal successors, (231), 200 states have internal predecessors, (231), 8 states have call successors, (8), 6 states have call predecessors, (8), 10 states have return successors, (16), 10 states have call predecessors, (16), 8 states have call successors, (16) [2024-11-19 11:13:32,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 255 transitions. [2024-11-19 11:13:32,685 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 255 transitions. Word has length 47 [2024-11-19 11:13:32,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:13:32,686 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 255 transitions. [2024-11-19 11:13:32,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 11:13:32,686 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 255 transitions. [2024-11-19 11:13:32,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-19 11:13:32,686 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:13:32,686 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:13:32,711 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-19 11:13:32,887 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,SelfDestructingSolverStorable27 [2024-11-19 11:13:32,887 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting func_to_recursive_line_25_to_33_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-11-19 11:13:32,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:13:32,887 INFO L85 PathProgramCache]: Analyzing trace with hash -958356055, now seen corresponding path program 1 times [2024-11-19 11:13:32,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:13:32,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388815368] [2024-11-19 11:13:32,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:32,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:13:32,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:13:32,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1388069049] [2024-11-19 11:13:32,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:13:32,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:13:32,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:13:32,906 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) [2024-11-19 11:13:32,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-19 11:13:33,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:13:33,003 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-19 11:13:33,004 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:13:33,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 11:13:33,071 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 25 treesize of output 13 [2024-11-19 11:13:33,128 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 29 treesize of output 13 [2024-11-19 11:13:33,142 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:13:33,142 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:13:57,573 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 3 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:13:57,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:13:57,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388815368] [2024-11-19 11:13:57,573 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:13:57,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388069049] [2024-11-19 11:13:57,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388069049] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:13:57,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 11:13:57,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2024-11-19 11:13:57,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165964315] [2024-11-19 11:13:57,574 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 11:13:57,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 11:13:57,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:13:57,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 11:13:57,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=303, Unknown=6, NotChecked=0, Total=380 [2024-11-19 11:13:57,575 INFO L87 Difference]: Start difference. First operand 217 states and 255 transitions. Second operand has 20 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 11:14:02,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2024-11-19 11:14:07,021 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2024-11-19 11:14:07,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:14:07,446 INFO L93 Difference]: Finished difference Result 221 states and 259 transitions. [2024-11-19 11:14:07,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-19 11:14:07,447 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 48 [2024-11-19 11:14:07,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:14:07,448 INFO L225 Difference]: With dead ends: 221 [2024-11-19 11:14:07,448 INFO L226 Difference]: Without dead ends: 220 [2024-11-19 11:14:07,449 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 73 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 25.6s TimeCoverageRelationStatistics Valid=237, Invalid=749, Unknown=6, NotChecked=0, Total=992 [2024-11-19 11:14:07,452 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 351 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 18 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2024-11-19 11:14:07,452 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 659 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 471 Invalid, 2 Unknown, 0 Unchecked, 8.5s Time] [2024-11-19 11:14:07,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-11-19 11:14:07,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 216. [2024-11-19 11:14:07,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 162 states have (on average 1.4074074074074074) internal successors, (228), 199 states have internal predecessors, (228), 8 states have call successors, (8), 6 states have call predecessors, (8), 10 states have return successors, (16), 10 states have call predecessors, (16), 8 states have call successors, (16) [2024-11-19 11:14:07,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 252 transitions. [2024-11-19 11:14:07,460 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 252 transitions. Word has length 48 [2024-11-19 11:14:07,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:14:07,460 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 252 transitions. [2024-11-19 11:14:07,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 11:14:07,461 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 252 transitions. [2024-11-19 11:14:07,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-19 11:14:07,461 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:14:07,461 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:14:07,473 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-19 11:14:07,664 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,SelfDestructingSolverStorable28 [2024-11-19 11:14:07,665 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-11-19 11:14:07,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:14:07,665 INFO L85 PathProgramCache]: Analyzing trace with hash -2125994489, now seen corresponding path program 1 times [2024-11-19 11:14:07,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:14:07,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792975520] [2024-11-19 11:14:07,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:14:07,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:14:07,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:14:07,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1809485700] [2024-11-19 11:14:07,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:14:07,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:14:07,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:14:07,683 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) [2024-11-19 11:14:07,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-19 11:14:07,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:14:07,771 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-19 11:14:07,772 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:14:07,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:14:07,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:14:07,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:14:07,951 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 11:14:07,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:14:07,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792975520] [2024-11-19 11:14:07,951 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:14:07,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809485700] [2024-11-19 11:14:07,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809485700] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:14:07,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:14:07,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 11:14:07,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839473624] [2024-11-19 11:14:07,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:14:07,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 11:14:07,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:14:07,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 11:14:07,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 11:14:07,952 INFO L87 Difference]: Start difference. First operand 216 states and 252 transitions. Second operand has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 7 states have internal predecessors, (44), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 11:14:08,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:14:08,096 INFO L93 Difference]: Finished difference Result 222 states and 259 transitions. [2024-11-19 11:14:08,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 11:14:08,096 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 7 states have internal predecessors, (44), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 48 [2024-11-19 11:14:08,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:14:08,097 INFO L225 Difference]: With dead ends: 222 [2024-11-19 11:14:08,097 INFO L226 Difference]: Without dead ends: 220 [2024-11-19 11:14:08,097 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 11:14:08,098 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 34 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:14:08,098 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 268 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:14:08,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-11-19 11:14:08,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 218. [2024-11-19 11:14:08,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 164 states have (on average 1.4024390243902438) internal successors, (230), 201 states have internal predecessors, (230), 8 states have call successors, (8), 6 states have call predecessors, (8), 10 states have return successors, (16), 10 states have call predecessors, (16), 8 states have call successors, (16) [2024-11-19 11:14:08,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 254 transitions. [2024-11-19 11:14:08,105 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 254 transitions. Word has length 48 [2024-11-19 11:14:08,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:14:08,105 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 254 transitions. [2024-11-19 11:14:08,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 7 states have internal predecessors, (44), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 11:14:08,105 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 254 transitions. [2024-11-19 11:14:08,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-19 11:14:08,105 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:14:08,105 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:14:08,119 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-19 11:14:08,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:14:08,306 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting func_to_recursive_line_25_to_33_0Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-11-19 11:14:08,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:14:08,306 INFO L85 PathProgramCache]: Analyzing trace with hash 355733416, now seen corresponding path program 1 times [2024-11-19 11:14:08,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:14:08,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924148911] [2024-11-19 11:14:08,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:14:08,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:14:08,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:14:08,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [934315212] [2024-11-19 11:14:08,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:14:08,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:14:08,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:14:08,324 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) [2024-11-19 11:14:08,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-19 11:14:08,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:14:08,420 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-19 11:14:08,422 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:14:08,425 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:14:08,505 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 19 treesize of output 11 [2024-11-19 11:14:08,588 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:14:08,588 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:14:10,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:14:10,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924148911] [2024-11-19 11:14:10,736 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:14:10,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934315212] [2024-11-19 11:14:10,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934315212] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:14:10,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-19 11:14:10,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-11-19 11:14:10,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167160343] [2024-11-19 11:14:10,736 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-19 11:14:10,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 11:14:10,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:14:10,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 11:14:10,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-19 11:14:10,737 INFO L87 Difference]: Start difference. First operand 218 states and 254 transitions. Second operand has 12 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 11:14:11,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:14:11,168 INFO L93 Difference]: Finished difference Result 234 states and 257 transitions. [2024-11-19 11:14:11,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 11:14:11,169 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2024-11-19 11:14:11,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:14:11,169 INFO L225 Difference]: With dead ends: 234 [2024-11-19 11:14:11,169 INFO L226 Difference]: Without dead ends: 233 [2024-11-19 11:14:11,170 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2024-11-19 11:14:11,170 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 136 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 11:14:11,170 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 631 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 11:14:11,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2024-11-19 11:14:11,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 218. [2024-11-19 11:14:11,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 164 states have (on average 1.396341463414634) internal successors, (229), 201 states have internal predecessors, (229), 8 states have call successors, (8), 6 states have call predecessors, (8), 10 states have return successors, (16), 10 states have call predecessors, (16), 8 states have call successors, (16) [2024-11-19 11:14:11,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 253 transitions. [2024-11-19 11:14:11,180 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 253 transitions. Word has length 49 [2024-11-19 11:14:11,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:14:11,180 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 253 transitions. [2024-11-19 11:14:11,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 11:14:11,180 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 253 transitions. [2024-11-19 11:14:11,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-19 11:14:11,180 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:14:11,180 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:14:11,193 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-19 11:14:11,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:14:11,381 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting func_to_recursive_line_25_to_33_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-11-19 11:14:11,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:14:11,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1857165941, now seen corresponding path program 1 times [2024-11-19 11:14:11,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:14:11,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40070206] [2024-11-19 11:14:11,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:14:11,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:14:11,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:14:11,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [520825594] [2024-11-19 11:14:11,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:14:11,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:14:11,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:14:11,404 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) [2024-11-19 11:14:11,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-19 11:14:11,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:14:11,503 INFO L255 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-19 11:14:11,505 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:14:11,507 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 [2024-11-19 11:14:11,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:14:11,670 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 19 treesize of output 11 [2024-11-19 11:14:11,726 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 19 treesize of output 11 [2024-11-19 11:14:11,853 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:14:11,853 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:14:12,486 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:14:12,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:14:12,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40070206] [2024-11-19 11:14:12,487 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:14:12,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520825594] [2024-11-19 11:14:12,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520825594] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:14:12,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 11:14:12,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2024-11-19 11:14:12,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449434956] [2024-11-19 11:14:12,487 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 11:14:12,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-19 11:14:12,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:14:12,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-19 11:14:12,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=616, Unknown=0, NotChecked=0, Total=702 [2024-11-19 11:14:12,488 INFO L87 Difference]: Start difference. First operand 218 states and 253 transitions. Second operand has 27 states, 24 states have (on average 3.7916666666666665) internal successors, (91), 23 states have internal predecessors, (91), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 11:14:15,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:14:15,881 INFO L93 Difference]: Finished difference Result 251 states and 262 transitions. [2024-11-19 11:14:15,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-19 11:14:15,881 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 24 states have (on average 3.7916666666666665) internal successors, (91), 23 states have internal predecessors, (91), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 50 [2024-11-19 11:14:15,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:14:15,882 INFO L225 Difference]: With dead ends: 251 [2024-11-19 11:14:15,882 INFO L226 Difference]: Without dead ends: 249 [2024-11-19 11:14:15,883 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=323, Invalid=1747, Unknown=0, NotChecked=0, Total=2070 [2024-11-19 11:14:15,883 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 502 mSDsluCounter, 1059 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 1123 SdHoareTripleChecker+Invalid, 1248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-19 11:14:15,883 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [503 Valid, 1123 Invalid, 1248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-19 11:14:15,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2024-11-19 11:14:15,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 218. [2024-11-19 11:14:15,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 164 states have (on average 1.3780487804878048) internal successors, (226), 201 states have internal predecessors, (226), 8 states have call successors, (8), 6 states have call predecessors, (8), 10 states have return successors, (16), 10 states have call predecessors, (16), 8 states have call successors, (16) [2024-11-19 11:14:15,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 250 transitions. [2024-11-19 11:14:15,891 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 250 transitions. Word has length 50 [2024-11-19 11:14:15,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:14:15,891 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 250 transitions. [2024-11-19 11:14:15,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 24 states have (on average 3.7916666666666665) internal successors, (91), 23 states have internal predecessors, (91), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 11:14:15,892 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 250 transitions. [2024-11-19 11:14:15,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-19 11:14:15,892 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:14:15,892 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:14:15,906 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-19 11:14:16,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:14:16,093 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-11-19 11:14:16,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:14:16,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1323733225, now seen corresponding path program 1 times [2024-11-19 11:14:16,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:14:16,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095261493] [2024-11-19 11:14:16,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:14:16,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:14:16,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:14:16,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:14:16,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:14:16,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095261493] [2024-11-19 11:14:16,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095261493] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:14:16,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:14:16,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 11:14:16,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756038288] [2024-11-19 11:14:16,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:14:16,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 11:14:16,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:14:16,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 11:14:16,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-19 11:14:16,205 INFO L87 Difference]: Start difference. First operand 218 states and 250 transitions. Second operand has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 11:14:16,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:14:16,431 INFO L93 Difference]: Finished difference Result 221 states and 253 transitions. [2024-11-19 11:14:16,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 11:14:16,431 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 50 [2024-11-19 11:14:16,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:14:16,432 INFO L225 Difference]: With dead ends: 221 [2024-11-19 11:14:16,432 INFO L226 Difference]: Without dead ends: 220 [2024-11-19 11:14:16,432 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-19 11:14:16,432 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 24 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 11:14:16,433 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 265 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 11:14:16,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-11-19 11:14:16,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 219. [2024-11-19 11:14:16,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 165 states have (on average 1.3757575757575757) internal successors, (227), 202 states have internal predecessors, (227), 8 states have call successors, (8), 6 states have call predecessors, (8), 10 states have return successors, (16), 10 states have call predecessors, (16), 8 states have call successors, (16) [2024-11-19 11:14:16,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 251 transitions. [2024-11-19 11:14:16,442 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 251 transitions. Word has length 50 [2024-11-19 11:14:16,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:14:16,442 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 251 transitions. [2024-11-19 11:14:16,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 11:14:16,443 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 251 transitions. [2024-11-19 11:14:16,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-19 11:14:16,443 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:14:16,443 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:14:16,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-19 11:14:16,443 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-11-19 11:14:16,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:14:16,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1913942848, now seen corresponding path program 1 times [2024-11-19 11:14:16,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:14:16,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615373783] [2024-11-19 11:14:16,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:14:16,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:14:16,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:14:16,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:14:16,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:14:16,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615373783] [2024-11-19 11:14:16,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615373783] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:14:16,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:14:16,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 11:14:16,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825707912] [2024-11-19 11:14:16,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:14:16,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 11:14:16,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:14:16,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 11:14:16,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 11:14:16,555 INFO L87 Difference]: Start difference. First operand 219 states and 251 transitions. Second operand has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 11:14:16,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:14:16,737 INFO L93 Difference]: Finished difference Result 221 states and 252 transitions. [2024-11-19 11:14:16,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 11:14:16,738 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 51 [2024-11-19 11:14:16,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:14:16,739 INFO L225 Difference]: With dead ends: 221 [2024-11-19 11:14:16,739 INFO L226 Difference]: Without dead ends: 199 [2024-11-19 11:14:16,739 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 11:14:16,739 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 23 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 11:14:16,739 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 277 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 11:14:16,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2024-11-19 11:14:16,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2024-11-19 11:14:16,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 146 states have (on average 1.417808219178082) internal successors, (207), 183 states have internal predecessors, (207), 8 states have call successors, (8), 6 states have call predecessors, (8), 9 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-19 11:14:16,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 230 transitions. [2024-11-19 11:14:16,746 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 230 transitions. Word has length 51 [2024-11-19 11:14:16,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:14:16,747 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 230 transitions. [2024-11-19 11:14:16,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 11:14:16,747 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 230 transitions. [2024-11-19 11:14:16,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-19 11:14:16,747 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:14:16,747 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:14:16,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-19 11:14:16,747 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting func_to_recursive_line_25_to_33_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-11-19 11:14:16,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:14:16,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1969927533, now seen corresponding path program 1 times [2024-11-19 11:14:16,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:14:16,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169095071] [2024-11-19 11:14:16,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:14:16,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:14:16,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:14:16,935 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:14:16,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:14:16,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169095071] [2024-11-19 11:14:16,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169095071] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:14:16,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475560746] [2024-11-19 11:14:16,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:14:16,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:14:16,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:14:16,937 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) [2024-11-19 11:14:16,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-19 11:14:17,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:14:17,021 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-19 11:14:17,022 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:14:17,114 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 38 treesize of output 15 [2024-11-19 11:14:17,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-19 11:14:17,171 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:14:17,171 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:14:17,288 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:14:17,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475560746] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:14:17,288 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 11:14:17,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 21 [2024-11-19 11:14:17,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328028732] [2024-11-19 11:14:17,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 11:14:17,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-19 11:14:17,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:14:17,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-19 11:14:17,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2024-11-19 11:14:17,289 INFO L87 Difference]: Start difference. First operand 199 states and 230 transitions. Second operand has 22 states, 20 states have (on average 6.35) internal successors, (127), 18 states have internal predecessors, (127), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 11:14:17,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:14:17,720 INFO L93 Difference]: Finished difference Result 199 states and 230 transitions. [2024-11-19 11:14:17,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 11:14:17,720 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 6.35) internal successors, (127), 18 states have internal predecessors, (127), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 52 [2024-11-19 11:14:17,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:14:17,721 INFO L225 Difference]: With dead ends: 199 [2024-11-19 11:14:17,721 INFO L226 Difference]: Without dead ends: 198 [2024-11-19 11:14:17,721 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 92 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=196, Invalid=674, Unknown=0, NotChecked=0, Total=870 [2024-11-19 11:14:17,721 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 333 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 11:14:17,722 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 681 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 11:14:17,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-19 11:14:17,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2024-11-19 11:14:17,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 146 states have (on average 1.3972602739726028) internal successors, (204), 182 states have internal predecessors, (204), 8 states have call successors, (8), 6 states have call predecessors, (8), 9 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-19 11:14:17,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 227 transitions. [2024-11-19 11:14:17,729 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 227 transitions. Word has length 52 [2024-11-19 11:14:17,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:14:17,729 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 227 transitions. [2024-11-19 11:14:17,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 6.35) internal successors, (127), 18 states have internal predecessors, (127), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 11:14:17,729 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 227 transitions. [2024-11-19 11:14:17,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-19 11:14:17,730 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:14:17,730 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:14:17,742 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-19 11:14:17,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:14:17,930 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting func_to_recursive_line_25_to_33_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-11-19 11:14:17,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:14:17,931 INFO L85 PathProgramCache]: Analyzing trace with hash 938211436, now seen corresponding path program 1 times [2024-11-19 11:14:17,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:14:17,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669496347] [2024-11-19 11:14:17,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:14:17,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:14:17,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:14:18,122 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:14:18,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:14:18,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669496347] [2024-11-19 11:14:18,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669496347] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:14:18,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816808701] [2024-11-19 11:14:18,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:14:18,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:14:18,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:14:18,124 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) [2024-11-19 11:14:18,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-19 11:14:18,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:14:18,210 INFO L255 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-19 11:14:18,211 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:14:18,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 11:14:18,329 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 36 treesize of output 13 [2024-11-19 11:14:18,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-19 11:14:18,357 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:14:18,357 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:14:18,513 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:14:18,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816808701] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:14:18,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 11:14:18,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 21 [2024-11-19 11:14:18,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551100155] [2024-11-19 11:14:18,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 11:14:18,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-19 11:14:18,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:14:18,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-19 11:14:18,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2024-11-19 11:14:18,515 INFO L87 Difference]: Start difference. First operand 198 states and 227 transitions. Second operand has 22 states, 18 states have (on average 7.388888888888889) internal successors, (133), 17 states have internal predecessors, (133), 8 states have call successors, (8), 7 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 11:14:18,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:14:18,926 INFO L93 Difference]: Finished difference Result 224 states and 233 transitions. [2024-11-19 11:14:18,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-19 11:14:18,926 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 7.388888888888889) internal successors, (133), 17 states have internal predecessors, (133), 8 states have call successors, (8), 7 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 53 [2024-11-19 11:14:18,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:14:18,927 INFO L225 Difference]: With dead ends: 224 [2024-11-19 11:14:18,927 INFO L226 Difference]: Without dead ends: 223 [2024-11-19 11:14:18,927 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=213, Invalid=779, Unknown=0, NotChecked=0, Total=992 [2024-11-19 11:14:18,927 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 289 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 11:14:18,928 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 707 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 11:14:18,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2024-11-19 11:14:18,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 198. [2024-11-19 11:14:18,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 146 states have (on average 1.3835616438356164) internal successors, (202), 182 states have internal predecessors, (202), 8 states have call successors, (8), 6 states have call predecessors, (8), 9 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-19 11:14:18,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 225 transitions. [2024-11-19 11:14:18,934 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 225 transitions. Word has length 53 [2024-11-19 11:14:18,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:14:18,935 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 225 transitions. [2024-11-19 11:14:18,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 7.388888888888889) internal successors, (133), 17 states have internal predecessors, (133), 8 states have call successors, (8), 7 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 11:14:18,935 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 225 transitions. [2024-11-19 11:14:18,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-19 11:14:18,935 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:14:18,935 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:14:18,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-19 11:14:19,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:14:19,136 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting func_to_recursive_line_25_to_33_0Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-11-19 11:14:19,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:14:19,136 INFO L85 PathProgramCache]: Analyzing trace with hash -980216497, now seen corresponding path program 1 times [2024-11-19 11:14:19,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:14:19,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107235230] [2024-11-19 11:14:19,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:14:19,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:14:19,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:14:19,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1372287377] [2024-11-19 11:14:19,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:14:19,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:14:19,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:14:19,157 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) [2024-11-19 11:14:19,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-19 11:14:19,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:14:19,259 INFO L255 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-19 11:14:19,260 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:14:19,264 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 11:14:19,349 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 25 treesize of output 13 [2024-11-19 11:14:19,407 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 22 treesize of output 10 [2024-11-19 11:14:19,419 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:14:19,420 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:14:19,572 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:14:19,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:14:19,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107235230] [2024-11-19 11:14:19,573 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:14:19,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372287377] [2024-11-19 11:14:19,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372287377] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:14:19,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 11:14:19,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2024-11-19 11:14:19,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157480585] [2024-11-19 11:14:19,573 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 11:14:19,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-19 11:14:19,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:14:19,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-19 11:14:19,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2024-11-19 11:14:19,574 INFO L87 Difference]: Start difference. First operand 198 states and 225 transitions. Second operand has 17 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 11:14:20,716 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2024-11-19 11:14:21,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:14:21,128 INFO L93 Difference]: Finished difference Result 198 states and 225 transitions. [2024-11-19 11:14:21,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-19 11:14:21,128 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 54 [2024-11-19 11:14:21,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:14:21,129 INFO L225 Difference]: With dead ends: 198 [2024-11-19 11:14:21,129 INFO L226 Difference]: Without dead ends: 197 [2024-11-19 11:14:21,129 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 87 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=159, Invalid=491, Unknown=0, NotChecked=0, Total=650 [2024-11-19 11:14:21,130 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 287 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-19 11:14:21,130 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 586 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 366 Invalid, 1 Unknown, 0 Unchecked, 1.4s Time] [2024-11-19 11:14:21,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-11-19 11:14:21,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2024-11-19 11:14:21,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 146 states have (on average 1.3630136986301369) internal successors, (199), 181 states have internal predecessors, (199), 8 states have call successors, (8), 6 states have call predecessors, (8), 9 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-19 11:14:21,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 222 transitions. [2024-11-19 11:14:21,137 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 222 transitions. Word has length 54 [2024-11-19 11:14:21,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:14:21,137 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 222 transitions. [2024-11-19 11:14:21,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 11:14:21,137 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 222 transitions. [2024-11-19 11:14:21,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-19 11:14:21,137 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:14:21,138 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:14:21,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-19 11:14:21,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:14:21,338 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting func_to_recursive_line_25_to_33_0Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-11-19 11:14:21,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:14:21,338 INFO L85 PathProgramCache]: Analyzing trace with hash -321940274, now seen corresponding path program 1 times [2024-11-19 11:14:21,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:14:21,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267337908] [2024-11-19 11:14:21,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:14:21,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:14:21,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:14:21,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1445589398] [2024-11-19 11:14:21,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:14:21,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:14:21,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:14:21,356 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:14:21,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-19 11:14:21,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:14:21,450 INFO L255 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-19 11:14:21,452 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:14:21,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:14:21,521 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 19 treesize of output 11 [2024-11-19 11:14:21,587 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:14:21,587 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:14:25,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:14:25,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267337908] [2024-11-19 11:14:25,262 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:14:25,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445589398] [2024-11-19 11:14:25,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445589398] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:14:25,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-19 11:14:25,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-11-19 11:14:25,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899500555] [2024-11-19 11:14:25,263 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-19 11:14:25,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 11:14:25,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:14:25,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 11:14:25,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=221, Unknown=1, NotChecked=0, Total=272 [2024-11-19 11:14:25,263 INFO L87 Difference]: Start difference. First operand 197 states and 222 transitions. Second operand has 11 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 11:14:25,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:14:25,460 INFO L93 Difference]: Finished difference Result 203 states and 222 transitions. [2024-11-19 11:14:25,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 11:14:25,460 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2024-11-19 11:14:25,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:14:25,461 INFO L225 Difference]: With dead ends: 203 [2024-11-19 11:14:25,461 INFO L226 Difference]: Without dead ends: 202 [2024-11-19 11:14:25,461 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=99, Invalid=362, Unknown=1, NotChecked=0, Total=462 [2024-11-19 11:14:25,461 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 89 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:14:25,461 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 559 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:14:25,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-11-19 11:14:25,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 197. [2024-11-19 11:14:25,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 146 states have (on average 1.356164383561644) internal successors, (198), 181 states have internal predecessors, (198), 8 states have call successors, (8), 6 states have call predecessors, (8), 9 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-19 11:14:25,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 221 transitions. [2024-11-19 11:14:25,470 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 221 transitions. Word has length 55 [2024-11-19 11:14:25,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:14:25,470 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 221 transitions. [2024-11-19 11:14:25,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 11:14:25,471 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 221 transitions. [2024-11-19 11:14:25,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-19 11:14:25,471 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:14:25,471 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:14:25,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-19 11:14:25,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-19 11:14:25,675 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting func_to_recursive_line_25_to_33_0Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-11-19 11:14:25,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:14:25,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1390213839, now seen corresponding path program 1 times [2024-11-19 11:14:25,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:14:25,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486081059] [2024-11-19 11:14:25,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:14:25,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:14:25,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:14:25,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [523504402] [2024-11-19 11:14:25,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:14:25,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:14:25,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:14:25,692 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:14:25,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-19 11:14:25,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:14:25,789 INFO L255 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-11-19 11:14:25,791 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:14:25,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:14:25,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:14:25,925 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 19 treesize of output 11 [2024-11-19 11:14:25,977 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 19 treesize of output 11 [2024-11-19 11:14:26,193 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:14:26,193 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:14:27,385 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:14:27,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:14:27,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486081059] [2024-11-19 11:14:27,385 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:14:27,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523504402] [2024-11-19 11:14:27,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523504402] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:14:27,386 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 11:14:27,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 30 [2024-11-19 11:14:27,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486388863] [2024-11-19 11:14:27,386 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 11:14:27,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-19 11:14:27,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:14:27,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-19 11:14:27,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=818, Unknown=0, NotChecked=0, Total=930 [2024-11-19 11:14:27,387 INFO L87 Difference]: Start difference. First operand 197 states and 221 transitions. Second operand has 31 states, 28 states have (on average 3.6785714285714284) internal successors, (103), 27 states have internal predecessors, (103), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 11:14:34,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-19 11:14:40,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:14:40,164 INFO L93 Difference]: Finished difference Result 201 states and 221 transitions. [2024-11-19 11:14:40,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-19 11:14:40,164 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 3.6785714285714284) internal successors, (103), 27 states have internal predecessors, (103), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 56 [2024-11-19 11:14:40,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:14:40,165 INFO L225 Difference]: With dead ends: 201 [2024-11-19 11:14:40,165 INFO L226 Difference]: Without dead ends: 198 [2024-11-19 11:14:40,166 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=494, Invalid=2586, Unknown=0, NotChecked=0, Total=3080 [2024-11-19 11:14:40,166 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 438 mSDsluCounter, 796 mSDsCounter, 0 mSdLazyCounter, 1185 mSolverCounterSat, 44 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 1230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1185 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2024-11-19 11:14:40,166 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 852 Invalid, 1230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1185 Invalid, 1 Unknown, 0 Unchecked, 7.3s Time] [2024-11-19 11:14:40,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-19 11:14:40,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 195. [2024-11-19 11:14:40,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 146 states have (on average 1.321917808219178) internal successors, (193), 179 states have internal predecessors, (193), 8 states have call successors, (8), 6 states have call predecessors, (8), 9 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-19 11:14:40,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 216 transitions. [2024-11-19 11:14:40,175 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 216 transitions. Word has length 56 [2024-11-19 11:14:40,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:14:40,175 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 216 transitions. [2024-11-19 11:14:40,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 3.6785714285714284) internal successors, (103), 27 states have internal predecessors, (103), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 11:14:40,176 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 216 transitions. [2024-11-19 11:14:40,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-19 11:14:40,176 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:14:40,176 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:14:40,189 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-19 11:14:40,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-19 11:14:40,381 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting func_to_recursive_line_25_to_33_0Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-11-19 11:14:40,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:14:40,381 INFO L85 PathProgramCache]: Analyzing trace with hash -260668141, now seen corresponding path program 1 times [2024-11-19 11:14:40,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:14:40,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601991719] [2024-11-19 11:14:40,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:14:40,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:14:40,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:14:40,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [528419240] [2024-11-19 11:14:40,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:14:40,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:14:40,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:14:40,400 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:14:40,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-19 11:14:40,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:14:40,498 INFO L255 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-19 11:14:40,499 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:14:40,502 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 11 treesize of output 7 [2024-11-19 11:14:40,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:14:40,651 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 19 treesize of output 11 [2024-11-19 11:14:40,701 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 19 treesize of output 11 [2024-11-19 11:14:41,225 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:14:41,225 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:14:52,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:14:52,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601991719] [2024-11-19 11:14:52,123 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:14:52,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528419240] [2024-11-19 11:14:52,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528419240] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:14:52,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-19 11:14:52,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2024-11-19 11:14:52,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50512342] [2024-11-19 11:14:52,123 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-19 11:14:52,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 11:14:52,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:14:52,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 11:14:52,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=606, Unknown=2, NotChecked=0, Total=702 [2024-11-19 11:14:52,124 INFO L87 Difference]: Start difference. First operand 195 states and 216 transitions. Second operand has 16 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 11:14:53,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:14:53,320 INFO L93 Difference]: Finished difference Result 198 states and 216 transitions. [2024-11-19 11:14:53,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-19 11:14:53,320 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2024-11-19 11:14:53,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:14:53,321 INFO L225 Difference]: With dead ends: 198 [2024-11-19 11:14:53,321 INFO L226 Difference]: Without dead ends: 197 [2024-11-19 11:14:53,322 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=207, Invalid=981, Unknown=2, NotChecked=0, Total=1190 [2024-11-19 11:14:53,322 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 89 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-19 11:14:53,322 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 582 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-19 11:14:53,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-11-19 11:14:53,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 195. [2024-11-19 11:14:53,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 146 states have (on average 1.3150684931506849) internal successors, (192), 179 states have internal predecessors, (192), 8 states have call successors, (8), 6 states have call predecessors, (8), 9 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-19 11:14:53,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 215 transitions. [2024-11-19 11:14:53,331 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 215 transitions. Word has length 58 [2024-11-19 11:14:53,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:14:53,331 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 215 transitions. [2024-11-19 11:14:53,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 11:14:53,331 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 215 transitions. [2024-11-19 11:14:53,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-19 11:14:53,332 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:14:53,332 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:14:53,347 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-19 11:14:53,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-19 11:14:53,532 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting func_to_recursive_line_25_to_33_0Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-11-19 11:14:53,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:14:53,533 INFO L85 PathProgramCache]: Analyzing trace with hash 509222290, now seen corresponding path program 1 times [2024-11-19 11:14:53,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:14:53,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916831452] [2024-11-19 11:14:53,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:14:53,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:14:53,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:14:53,748 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:14:53,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:14:53,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916831452] [2024-11-19 11:14:53,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916831452] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:14:53,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661393424] [2024-11-19 11:14:53,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:14:53,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:14:53,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:14:53,750 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:14:53,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-19 11:14:53,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:14:53,855 INFO L255 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-19 11:14:53,856 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:14:53,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 11:14:53,968 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 36 treesize of output 13 [2024-11-19 11:14:53,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-19 11:14:54,032 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:14:54,032 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:14:54,275 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:14:54,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661393424] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:14:54,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 11:14:54,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2024-11-19 11:14:54,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623940401] [2024-11-19 11:14:54,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 11:14:54,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-19 11:14:54,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:14:54,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-19 11:14:54,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2024-11-19 11:14:54,277 INFO L87 Difference]: Start difference. First operand 195 states and 215 transitions. Second operand has 21 states, 17 states have (on average 8.0) internal successors, (136), 17 states have internal predecessors, (136), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 11:14:54,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:14:54,775 INFO L93 Difference]: Finished difference Result 195 states and 215 transitions. [2024-11-19 11:14:54,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 11:14:54,776 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 8.0) internal successors, (136), 17 states have internal predecessors, (136), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 59 [2024-11-19 11:14:54,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:14:54,777 INFO L225 Difference]: With dead ends: 195 [2024-11-19 11:14:54,777 INFO L226 Difference]: Without dead ends: 194 [2024-11-19 11:14:54,777 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 103 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=163, Invalid=649, Unknown=0, NotChecked=0, Total=812 [2024-11-19 11:14:54,777 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 172 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 11:14:54,779 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 665 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 11:14:54,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-11-19 11:14:54,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2024-11-19 11:14:54,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 146 states have (on average 1.2945205479452055) internal successors, (189), 178 states have internal predecessors, (189), 8 states have call successors, (8), 6 states have call predecessors, (8), 9 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-19 11:14:54,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 212 transitions. [2024-11-19 11:14:54,789 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 212 transitions. Word has length 59 [2024-11-19 11:14:54,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:14:54,789 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 212 transitions. [2024-11-19 11:14:54,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 8.0) internal successors, (136), 17 states have internal predecessors, (136), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 11:14:54,789 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 212 transitions. [2024-11-19 11:14:54,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-19 11:14:54,789 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:14:54,790 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:14:54,809 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0