./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 a046e57d 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-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 14:01:54,873 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 14:01:54,931 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-13 14:01:54,937 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 14:01:54,938 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 14:01:54,961 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 14:01:54,962 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 14:01:54,963 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 14:01:54,963 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 14:01:54,965 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 14:01:54,965 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 14:01:54,966 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 14:01:54,966 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 14:01:54,966 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 14:01:54,968 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 14:01:54,968 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 14:01:54,968 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 14:01:54,969 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 14:01:54,969 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 14:01:54,969 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 14:01:54,969 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 14:01:54,973 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 14:01:54,973 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 14:01:54,973 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 14:01:54,973 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 14:01:54,974 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-13 14:01:54,974 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 14:01:54,974 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 14:01:54,974 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 14:01:54,974 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 14:01:54,975 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 14:01:54,975 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 14:01:54,975 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 14:01:54,975 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 14:01:54,975 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 14:01:54,976 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 14:01:54,976 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 14:01:54,976 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 14:01:54,976 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 14:01:54,977 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 14:01:54,977 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 14:01:54,977 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 14:01:54,977 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 14:01:54,978 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 14:01:54,978 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ff641574c5c4b41213c0a7618630c50b2b820c3ae0c2511bc348b3db9b6781b [2024-10-13 14:01:55,195 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 14:01:55,216 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 14:01:55,219 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 14:01:55,220 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 14:01:55,221 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 14:01:55,222 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd2.c [2024-10-13 14:01:56,460 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 14:01:56,616 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 14:01:56,617 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd2.c [2024-10-13 14:01:56,627 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9babdaa61/952389d2c8cc44e78f63f714e79a5b70/FLAG2ab52ffe9 [2024-10-13 14:01:57,020 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9babdaa61/952389d2c8cc44e78f63f714e79a5b70 [2024-10-13 14:01:57,023 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 14:01:57,024 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 14:01:57,026 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 14:01:57,026 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 14:01:57,031 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 14:01:57,032 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:01:57" (1/1) ... [2024-10-13 14:01:57,033 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@562358b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:57, skipping insertion in model container [2024-10-13 14:01:57,034 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:01:57" (1/1) ... [2024-10-13 14:01:57,053 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 14:01:57,266 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 14:01:57,276 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 14:01:57,309 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 14:01:57,324 INFO L204 MainTranslator]: Completed translation [2024-10-13 14:01:57,324 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:57 WrapperNode [2024-10-13 14:01:57,324 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 14:01:57,325 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 14:01:57,325 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 14:01:57,325 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 14:01:57,336 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:57" (1/1) ... [2024-10-13 14:01:57,345 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:57" (1/1) ... [2024-10-13 14:01:57,370 INFO L138 Inliner]: procedures = 17, calls = 136, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 137 [2024-10-13 14:01:57,370 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 14:01:57,371 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 14:01:57,371 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 14:01:57,371 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 14:01:57,381 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:57" (1/1) ... [2024-10-13 14:01:57,381 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:57" (1/1) ... [2024-10-13 14:01:57,388 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:57" (1/1) ... [2024-10-13 14:01:57,410 INFO L175 MemorySlicer]: Split 88 memory accesses to 12 slices as follows [2, 8, 7, 10, 8, 5, 7, 8, 5, 7, 12, 9]. 14 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 0, 0, 0, 8, 0, 0, 0, 0, 0, 0, 0]. The 20 writes are split as follows [0, 2, 3, 2, 0, 2, 2, 2, 2, 3, 1, 1]. [2024-10-13 14:01:57,411 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:57" (1/1) ... [2024-10-13 14:01:57,411 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:57" (1/1) ... [2024-10-13 14:01:57,418 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:57" (1/1) ... [2024-10-13 14:01:57,420 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:57" (1/1) ... [2024-10-13 14:01:57,422 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:57" (1/1) ... [2024-10-13 14:01:57,423 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:57" (1/1) ... [2024-10-13 14:01:57,427 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 14:01:57,427 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 14:01:57,428 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 14:01:57,428 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 14:01:57,428 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:57" (1/1) ... [2024-10-13 14:01:57,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 14:01:57,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:01:57,465 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) [2024-10-13 14:01:57,472 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 [2024-10-13 14:01:57,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 14:01:57,515 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-13 14:01:57,515 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-13 14:01:57,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 14:01:57,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 14:01:57,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-13 14:01:57,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-13 14:01:57,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-13 14:01:57,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-13 14:01:57,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-13 14:01:57,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-10-13 14:01:57,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-10-13 14:01:57,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-10-13 14:01:57,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-10-13 14:01:57,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-10-13 14:01:57,518 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_34_to_60_0 [2024-10-13 14:01:57,518 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_34_to_60_0 [2024-10-13 14:01:57,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-13 14:01:57,518 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_40_to_48_0 [2024-10-13 14:01:57,518 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_40_to_48_0 [2024-10-13 14:01:57,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 14:01:57,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 14:01:57,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-13 14:01:57,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-13 14:01:57,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-13 14:01:57,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-10-13 14:01:57,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-10-13 14:01:57,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-10-13 14:01:57,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-10-13 14:01:57,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-10-13 14:01:57,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-10-13 14:01:57,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-10-13 14:01:57,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 14:01:57,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 14:01:57,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 14:01:57,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 14:01:57,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-13 14:01:57,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-13 14:01:57,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-13 14:01:57,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-10-13 14:01:57,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-10-13 14:01:57,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-10-13 14:01:57,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-10-13 14:01:57,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-10-13 14:01:57,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-10-13 14:01:57,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-10-13 14:01:57,523 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-13 14:01:57,523 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-13 14:01:57,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-13 14:01:57,648 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 14:01:57,650 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 14:01:58,438 INFO L? ?]: Removed 241 outVars from TransFormulas that were not future-live. [2024-10-13 14:01:58,438 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 14:01:58,483 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 14:01:58,484 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-13 14:01:58,485 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:01:58 BoogieIcfgContainer [2024-10-13 14:01:58,485 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 14:01:58,487 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 14:01:58,487 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 14:01:58,490 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 14:01:58,491 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:01:57" (1/3) ... [2024-10-13 14:01:58,491 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@390108cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:01:58, skipping insertion in model container [2024-10-13 14:01:58,491 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:57" (2/3) ... [2024-10-13 14:01:58,492 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@390108cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:01:58, skipping insertion in model container [2024-10-13 14:01:58,492 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:01:58" (3/3) ... [2024-10-13 14:01:58,493 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_egcd2.c [2024-10-13 14:01:58,507 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 14:01:58,507 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 64 error locations. [2024-10-13 14:01:58,569 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 14:01:58,576 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;@3f9a0e86, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 14:01:58,576 INFO L334 AbstractCegarLoop]: Starting to check reachability of 64 error locations. [2024-10-13 14:01:58,581 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) [2024-10-13 14:01:58,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-10-13 14:01:58,588 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:01:58,588 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:01:58,590 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)] === [2024-10-13 14:01:58,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:01:58,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1246408951, now seen corresponding path program 1 times [2024-10-13 14:01:58,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:01:58,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009916998] [2024-10-13 14:01:58,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:01:58,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:01:58,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:58,824 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-13 14:01:58,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:58,837 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-13 14:01:58,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:58,875 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-13 14:01:58,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:58,889 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-13 14:01:58,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:01:58,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009916998] [2024-10-13 14:01:58,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009916998] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:01:58,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:01:58,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 14:01:58,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151495868] [2024-10-13 14:01:58,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:01:58,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 14:01:58,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:01:58,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 14:01:58,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 14:01:58,921 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) [2024-10-13 14:01:59,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:01:59,489 INFO L93 Difference]: Finished difference Result 342 states and 381 transitions. [2024-10-13 14:01:59,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 14:01:59,491 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 [2024-10-13 14:01:59,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:01:59,498 INFO L225 Difference]: With dead ends: 342 [2024-10-13 14:01:59,499 INFO L226 Difference]: Without dead ends: 171 [2024-10-13 14:01:59,521 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 [2024-10-13 14:01:59,524 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 [2024-10-13 14:01:59,528 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] [2024-10-13 14:01:59,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-10-13 14:01:59,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 167. [2024-10-13 14:01:59,599 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) [2024-10-13 14:01:59,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 175 transitions. [2024-10-13 14:01:59,602 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 175 transitions. Word has length 20 [2024-10-13 14:01:59,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:01:59,603 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 175 transitions. [2024-10-13 14:01:59,603 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) [2024-10-13 14:01:59,603 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 175 transitions. [2024-10-13 14:01:59,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-13 14:01:59,604 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:01:59,604 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:01:59,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 14:01:59,605 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)] === [2024-10-13 14:01:59,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:01:59,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1837623648, now seen corresponding path program 1 times [2024-10-13 14:01:59,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:01:59,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720087920] [2024-10-13 14:01:59,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:01:59,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:01:59,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:01:59,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [887952991] [2024-10-13 14:01:59,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:01:59,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:01:59,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:01:59,678 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) [2024-10-13 14:01:59,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 14:01:59,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:59,829 INFO L255 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-13 14:01:59,834 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:01:59,886 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 [2024-10-13 14:01:59,925 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-13 14:01:59,925 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 14:01:59,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:01:59,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720087920] [2024-10-13 14:01:59,926 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:01:59,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887952991] [2024-10-13 14:01:59,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887952991] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:01:59,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:01:59,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 14:01:59,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609226747] [2024-10-13 14:01:59,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:01:59,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 14:01:59,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:01:59,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 14:01:59,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-13 14:01:59,933 INFO L87 Difference]: Start difference. First operand 167 states and 175 transitions. Second operand has 6 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-13 14:02:00,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:02:00,108 INFO L93 Difference]: Finished difference Result 286 states and 300 transitions. [2024-10-13 14:02:00,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 14:02:00,108 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (4), 2 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 [2024-10-13 14:02:00,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:02:00,110 INFO L225 Difference]: With dead ends: 286 [2024-10-13 14:02:00,110 INFO L226 Difference]: Without dead ends: 284 [2024-10-13 14:02:00,111 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-13 14:02:00,112 INFO L432 NwaCegarLoop]: 161 mSDtfsCounter, 208 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 14:02:00,112 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 783 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 14:02:00,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2024-10-13 14:02:00,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 220. [2024-10-13 14:02:00,133 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) [2024-10-13 14:02:00,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 271 transitions. [2024-10-13 14:02:00,138 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 271 transitions. Word has length 21 [2024-10-13 14:02:00,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:02:00,138 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 271 transitions. [2024-10-13 14:02:00,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-13 14:02:00,139 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 271 transitions. [2024-10-13 14:02:00,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-13 14:02:00,139 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:02:00,139 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:02:00,159 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 14:02:00,340 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 [2024-10-13 14:02:00,340 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)] === [2024-10-13 14:02:00,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:02:00,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1835038649, now seen corresponding path program 1 times [2024-10-13 14:02:00,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:02:00,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666991292] [2024-10-13 14:02:00,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:00,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:02:00,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:00,753 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-13 14:02:00,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:00,756 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-13 14:02:00,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:00,804 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-13 14:02:00,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:02:00,886 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 14:02:00,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:02:00,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666991292] [2024-10-13 14:02:00,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666991292] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:02:00,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:02:00,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-13 14:02:00,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694781509] [2024-10-13 14:02:00,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:02:00,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 14:02:00,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:02:00,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 14:02:00,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-10-13 14:02:00,889 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) [2024-10-13 14:02:02,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:02:02,368 INFO L93 Difference]: Finished difference Result 255 states and 306 transitions. [2024-10-13 14:02:02,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-13 14:02:02,369 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 [2024-10-13 14:02:02,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:02:02,370 INFO L225 Difference]: With dead ends: 255 [2024-10-13 14:02:02,371 INFO L226 Difference]: Without dead ends: 224 [2024-10-13 14:02:02,372 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 [2024-10-13 14:02:02,373 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 124 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.3s IncrementalHoareTripleChecker+Time [2024-10-13 14:02:02,373 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 465 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-13 14:02:02,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-10-13 14:02:02,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2024-10-13 14:02:02,387 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) [2024-10-13 14:02:02,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 275 transitions. [2024-10-13 14:02:02,388 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 275 transitions. Word has length 21 [2024-10-13 14:02:02,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:02:02,389 INFO L471 AbstractCegarLoop]: Abstraction has 224 states and 275 transitions. [2024-10-13 14:02:02,389 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) [2024-10-13 14:02:02,389 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 275 transitions. [2024-10-13 14:02:02,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-13 14:02:02,393 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:02:02,393 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] [2024-10-13 14:02:02,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 14:02:02,393 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)] === [2024-10-13 14:02:02,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:02:02,394 INFO L85 PathProgramCache]: Analyzing trace with hash 724768258, now seen corresponding path program 1 times [2024-10-13 14:02:02,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:02:02,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056487239] [2024-10-13 14:02:02,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:02,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:02:02,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat