./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd2.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 4ff641574c5c4b41213c0a7618630c50b2b820c3ae0c2511bc348b3db9b6781b --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 21:13:46,191 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 21:13:46,229 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-14 21:13:46,246 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 21:13:46,248 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 21:13:46,274 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 21:13:46,274 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 21:13:46,275 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 21:13:46,275 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 21:13:46,275 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 21:13:46,276 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 21:13:46,276 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 21:13:46,277 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 21:13:46,277 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 21:13:46,277 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 21:13:46,277 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 21:13:46,278 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 21:13:46,278 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 21:13:46,278 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 21:13:46,279 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 21:13:46,279 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 21:13:46,282 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 21:13:46,283 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 21:13:46,283 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 21:13:46,283 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 21:13:46,283 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-14 21:13:46,284 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 21:13:46,284 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 21:13:46,284 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 21:13:46,284 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 21:13:46,285 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 21:13:46,285 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 21:13:46,285 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 21:13:46,285 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 21:13:46,286 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 21:13:46,286 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 21:13:46,286 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 21:13:46,287 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 21:13:46,287 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 21:13:46,287 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 21:13:46,287 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 21:13:46,288 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 21:13:46,288 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 21:13:46,288 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 21:13:46,288 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ff641574c5c4b41213c0a7618630c50b2b820c3ae0c2511bc348b3db9b6781b [2024-10-14 21:13:46,496 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 21:13:46,522 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 21:13:46,525 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 21:13:46,530 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 21:13:46,531 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 21:13:46,532 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd2.c [2024-10-14 21:13:47,892 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 21:13:48,045 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 21:13:48,045 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd2.c [2024-10-14 21:13:48,053 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/120929d7d/758d7e8a08c040ca8ad244b00c8529b4/FLAGca5d95c36 [2024-10-14 21:13:48,064 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/120929d7d/758d7e8a08c040ca8ad244b00c8529b4 [2024-10-14 21:13:48,066 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 21:13:48,067 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 21:13:48,068 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 21:13:48,068 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 21:13:48,072 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 21:13:48,073 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:13:48" (1/1) ... [2024-10-14 21:13:48,073 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a522152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:48, skipping insertion in model container [2024-10-14 21:13:48,073 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:13:48" (1/1) ... [2024-10-14 21:13:48,090 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 21:13:48,233 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 21:13:48,240 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 21:13:48,264 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 21:13:48,277 INFO L204 MainTranslator]: Completed translation [2024-10-14 21:13:48,277 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:48 WrapperNode [2024-10-14 21:13:48,277 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 21:13:48,278 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 21:13:48,278 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 21:13:48,278 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 21:13:48,283 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:48" (1/1) ... [2024-10-14 21:13:48,294 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:48" (1/1) ... [2024-10-14 21:13:48,316 INFO L138 Inliner]: procedures = 17, calls = 136, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 137 [2024-10-14 21:13:48,316 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 21:13:48,316 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 21:13:48,316 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 21:13:48,317 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 21:13:48,325 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:48" (1/1) ... [2024-10-14 21:13:48,325 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:48" (1/1) ... [2024-10-14 21:13:48,330 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:48" (1/1) ... [2024-10-14 21:13:48,352 INFO L175 MemorySlicer]: Split 88 memory accesses to 12 slices as follows [7, 8, 2, 10, 5, 8, 7, 8, 5, 12, 7, 9]. 14 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [0, 0, 2, 0, 0, 8, 0, 0, 0, 0, 0, 0]. The 20 writes are split as follows [2, 2, 0, 2, 2, 0, 3, 2, 2, 1, 3, 1]. [2024-10-14 21:13:48,355 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:48" (1/1) ... [2024-10-14 21:13:48,359 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:48" (1/1) ... [2024-10-14 21:13:48,366 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:48" (1/1) ... [2024-10-14 21:13:48,373 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:48" (1/1) ... [2024-10-14 21:13:48,375 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:48" (1/1) ... [2024-10-14 21:13:48,380 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:48" (1/1) ... [2024-10-14 21:13:48,383 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 21:13:48,384 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 21:13:48,384 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 21:13:48,384 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 21:13:48,384 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:48" (1/1) ... [2024-10-14 21:13:48,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 21:13:48,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:13:48,424 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 21:13:48,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 21:13:48,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 21:13:48,462 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-14 21:13:48,462 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-14 21:13:48,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 21:13:48,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 21:13:48,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-14 21:13:48,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-14 21:13:48,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-14 21:13:48,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-14 21:13:48,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-14 21:13:48,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-10-14 21:13:48,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-10-14 21:13:48,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-10-14 21:13:48,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-10-14 21:13:48,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-10-14 21:13:48,465 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_34_to_60_0 [2024-10-14 21:13:48,465 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_34_to_60_0 [2024-10-14 21:13:48,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-14 21:13:48,466 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_40_to_48_0 [2024-10-14 21:13:48,466 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_40_to_48_0 [2024-10-14 21:13:48,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-14 21:13:48,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-14 21:13:48,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-14 21:13:48,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-14 21:13:48,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-14 21:13:48,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-10-14 21:13:48,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-10-14 21:13:48,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-10-14 21:13:48,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-10-14 21:13:48,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-10-14 21:13:48,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-10-14 21:13:48,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-10-14 21:13:48,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 21:13:48,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 21:13:48,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-14 21:13:48,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-14 21:13:48,470 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-14 21:13:48,470 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-14 21:13:48,470 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-14 21:13:48,470 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-10-14 21:13:48,470 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-10-14 21:13:48,470 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-10-14 21:13:48,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-10-14 21:13:48,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-10-14 21:13:48,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-10-14 21:13:48,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-10-14 21:13:48,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-14 21:13:48,471 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-14 21:13:48,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-14 21:13:48,595 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 21:13:48,598 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 21:13:49,432 INFO L? ?]: Removed 241 outVars from TransFormulas that were not future-live. [2024-10-14 21:13:49,432 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 21:13:49,464 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 21:13:49,465 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-14 21:13:49,466 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:13:49 BoogieIcfgContainer [2024-10-14 21:13:49,466 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 21:13:49,467 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 21:13:49,468 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 21:13:49,470 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 21:13:49,470 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:13:48" (1/3) ... [2024-10-14 21:13:49,471 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e0317f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:13:49, skipping insertion in model container [2024-10-14 21:13:49,471 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:48" (2/3) ... [2024-10-14 21:13:49,471 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e0317f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:13:49, skipping insertion in model container [2024-10-14 21:13:49,472 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:13:49" (3/3) ... [2024-10-14 21:13:49,473 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_egcd2.c [2024-10-14 21:13:49,484 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 21:13:49,485 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 64 error locations. [2024-10-14 21:13:49,558 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 21:13:49,564 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;@2f23c4ea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 21:13:49,567 INFO L334 AbstractCegarLoop]: Starting to check reachability of 64 error locations. [2024-10-14 21:13:49,574 INFO L276 IsEmpty]: Start isEmpty. Operand has 170 states, 89 states have (on average 1.7865168539325842) internal successors, (159), 155 states have internal predecessors, (159), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-14 21:13:49,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-10-14 21:13:49,587 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:13:49,588 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:13:49,588 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2024-10-14 21:13:49,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:13:49,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1246408951, now seen corresponding path program 1 times [2024-10-14 21:13:49,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:13:49,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535620390] [2024-10-14 21:13:49,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:13:49,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:13:49,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:13:49,906 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 21:13:49,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:13:49,921 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-14 21:13:49,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:13:49,954 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-14 21:13:49,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:13:49,964 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 21:13:49,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:13:49,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535620390] [2024-10-14 21:13:49,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535620390] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:13:49,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:13:49,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 21:13:49,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985389528] [2024-10-14 21:13:49,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:13:49,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 21:13:49,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:13:49,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 21:13:49,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 21:13:49,995 INFO L87 Difference]: Start difference. First operand has 170 states, 89 states have (on average 1.7865168539325842) internal successors, (159), 155 states have internal predecessors, (159), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-14 21:13:50,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:13:50,583 INFO L93 Difference]: Finished difference Result 342 states and 381 transitions. [2024-10-14 21:13:50,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 21:13:50,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 20 [2024-10-14 21:13:50,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:13:50,592 INFO L225 Difference]: With dead ends: 342 [2024-10-14 21:13:50,592 INFO L226 Difference]: Without dead ends: 171 [2024-10-14 21:13:50,596 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 21:13:50,598 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 102 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-14 21:13:50,599 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 105 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-14 21:13:50,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-10-14 21:13:50,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 167. [2024-10-14 21:13:50,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 88 states have (on average 1.7386363636363635) internal successors, (153), 153 states have internal predecessors, (153), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-10-14 21:13:50,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 175 transitions. [2024-10-14 21:13:50,635 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 175 transitions. Word has length 20 [2024-10-14 21:13:50,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:13:50,635 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 175 transitions. [2024-10-14 21:13:50,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-14 21:13:50,636 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 175 transitions. [2024-10-14 21:13:50,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-14 21:13:50,637 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:13:50,637 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:13:50,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 21:13:50,638 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_40_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2024-10-14 21:13:50,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:13:50,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1837623648, now seen corresponding path program 1 times [2024-10-14 21:13:50,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:13:50,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212323677] [2024-10-14 21:13:50,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:13:50,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:13:50,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 21:13:50,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [868534729] [2024-10-14 21:13:50,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:13:50,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:13:50,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:13:50,733 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 21:13:50,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 21:13:50,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:13:50,871 INFO L255 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-10-14 21:13:50,876 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:13:50,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-14 21:13:50,942 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 [2024-10-14 21:13:50,973 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 21:13:50,973 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 21:13:50,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:13:50,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212323677] [2024-10-14 21:13:50,974 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 21:13:50,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868534729] [2024-10-14 21:13:50,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868534729] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:13:50,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:13:50,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-14 21:13:50,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528603492] [2024-10-14 21:13:50,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:13:50,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 21:13:50,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:13:50,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 21:13:50,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-14 21:13:50,977 INFO L87 Difference]: Start difference. First operand 167 states and 175 transitions. Second operand has 8 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-14 21:13:51,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:13:51,218 INFO L93 Difference]: Finished difference Result 321 states and 341 transitions. [2024-10-14 21:13:51,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 21:13:51,219 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2024-10-14 21:13:51,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:13:51,221 INFO L225 Difference]: With dead ends: 321 [2024-10-14 21:13:51,222 INFO L226 Difference]: Without dead ends: 319 [2024-10-14 21:13:51,223 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-14 21:13:51,223 INFO L432 NwaCegarLoop]: 157 mSDtfsCounter, 240 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 1046 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 21:13:51,224 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 1046 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 21:13:51,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2024-10-14 21:13:51,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 220. [2024-10-14 21:13:51,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 136 states have (on average 1.7647058823529411) internal successors, (240), 201 states have internal predecessors, (240), 15 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2024-10-14 21:13:51,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 271 transitions. [2024-10-14 21:13:51,247 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 271 transitions. Word has length 21 [2024-10-14 21:13:51,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:13:51,247 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 271 transitions. [2024-10-14 21:13:51,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-14 21:13:51,248 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 271 transitions. [2024-10-14 21:13:51,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-14 21:13:51,248 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:13:51,248 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:13:51,266 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-14 21:13:51,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:13:51,454 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2024-10-14 21:13:51,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:13:51,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1835038649, now seen corresponding path program 1 times [2024-10-14 21:13:51,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:13:51,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623567992] [2024-10-14 21:13:51,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:13:51,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:13:51,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:13:51,713 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 21:13:51,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:13:51,716 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-14 21:13:51,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:13:51,758 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-14 21:13:51,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:13:51,821 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 21:13:51,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:13:51,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623567992] [2024-10-14 21:13:51,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623567992] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:13:51,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:13:51,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-14 21:13:51,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102584163] [2024-10-14 21:13:51,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:13:51,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-14 21:13:51,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:13:51,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-14 21:13:51,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-10-14 21:13:51,824 INFO L87 Difference]: Start difference. First operand 220 states and 271 transitions. Second operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-14 21:13:53,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:13:53,085 INFO L93 Difference]: Finished difference Result 255 states and 306 transitions. [2024-10-14 21:13:53,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-14 21:13:53,086 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 21 [2024-10-14 21:13:53,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:13:53,087 INFO L225 Difference]: With dead ends: 255 [2024-10-14 21:13:53,087 INFO L226 Difference]: Without dead ends: 224 [2024-10-14 21:13:53,087 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2024-10-14 21:13:53,088 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 124 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-14 21:13:53,088 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 465 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-14 21:13:53,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-10-14 21:13:53,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2024-10-14 21:13:53,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 138 states have (on average 1.7536231884057971) internal successors, (242), 203 states have internal predecessors, (242), 15 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (18), 15 states have call predecessors, (18), 15 states have call successors, (18) [2024-10-14 21:13:53,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 275 transitions. [2024-10-14 21:13:53,110 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 275 transitions. Word has length 21 [2024-10-14 21:13:53,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:13:53,110 INFO L471 AbstractCegarLoop]: Abstraction has 224 states and 275 transitions. [2024-10-14 21:13:53,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-14 21:13:53,110 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 275 transitions. [2024-10-14 21:13:53,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-14 21:13:53,111 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:13:53,111 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:13:53,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 21:13:53,115 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_40_to_48_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2024-10-14 21:13:53,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:13:53,116 INFO L85 PathProgramCache]: Analyzing trace with hash 724768258, now seen corresponding path program 1 times [2024-10-14 21:13:53,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:13:53,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276310155] [2024-10-14 21:13:53,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:13:53,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:13:53,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat