./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_fermat2-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 803cd42f 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 ../sv-benchmarks/c/recursified_nla-digbench/recursified_fermat2-ll.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9ae1eacd45e2434e505261d43bb17259916099964617682d271ef41fa1c24d0c --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 23:08:20,812 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 23:08:20,863 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-22 23:08:20,867 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 23:08:20,867 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 23:08:20,890 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 23:08:20,891 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 23:08:20,891 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 23:08:20,892 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 23:08:20,893 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 23:08:20,893 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 23:08:20,893 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 23:08:20,893 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 23:08:20,895 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 23:08:20,895 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 23:08:20,895 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 23:08:20,896 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 23:08:20,896 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 23:08:20,896 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 23:08:20,896 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 23:08:20,897 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 23:08:20,897 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 23:08:20,897 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 23:08:20,898 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 23:08:20,898 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 23:08:20,898 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-22 23:08:20,898 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-22 23:08:20,898 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 23:08:20,899 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 23:08:20,899 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 23:08:20,899 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 23:08:20,899 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 23:08:20,900 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 23:08:20,900 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 23:08:20,900 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 23:08:20,900 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 23:08:20,900 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 23:08:20,901 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 23:08:20,901 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 23:08:20,901 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 23:08:20,901 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 23:08:20,905 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 23:08:20,905 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 23:08:20,906 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 23:08:20,906 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ae1eacd45e2434e505261d43bb17259916099964617682d271ef41fa1c24d0c [2024-11-22 23:08:21,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 23:08:21,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 23:08:21,109 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 23:08:21,110 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 23:08:21,110 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 23:08:21,111 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_nla-digbench/recursified_fermat2-ll.c [2024-11-22 23:08:22,305 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 23:08:22,436 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 23:08:22,437 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_fermat2-ll.c [2024-11-22 23:08:22,442 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79e2b8cf2/b56afd809b704088bb8ca895e42f7631/FLAG03cc0682a [2024-11-22 23:08:22,452 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79e2b8cf2/b56afd809b704088bb8ca895e42f7631 [2024-11-22 23:08:22,455 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 23:08:22,456 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 23:08:22,457 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 23:08:22,457 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 23:08:22,461 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 23:08:22,461 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:08:22" (1/1) ... [2024-11-22 23:08:22,462 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54295e6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:08:22, skipping insertion in model container [2024-11-22 23:08:22,462 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:08:22" (1/1) ... [2024-11-22 23:08:22,481 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 23:08:22,625 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 23:08:22,640 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 23:08:22,666 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 23:08:22,682 INFO L204 MainTranslator]: Completed translation [2024-11-22 23:08:22,682 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:08:22 WrapperNode [2024-11-22 23:08:22,683 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 23:08:22,684 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 23:08:22,684 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 23:08:22,684 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 23:08:22,690 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:08:22" (1/1) ... [2024-11-22 23:08:22,696 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:08:22" (1/1) ... [2024-11-22 23:08:22,715 INFO L138 Inliner]: procedures = 16, calls = 60, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 103 [2024-11-22 23:08:22,718 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 23:08:22,718 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 23:08:22,718 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 23:08:22,718 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 23:08:22,727 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:08:22" (1/1) ... [2024-11-22 23:08:22,727 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:08:22" (1/1) ... [2024-11-22 23:08:22,732 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:08:22" (1/1) ... [2024-11-22 23:08:22,751 INFO L175 MemorySlicer]: Split 36 memory accesses to 5 slices as follows [2, 6, 8, 10, 10]. 28 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 8 writes are split as follows [0, 1, 3, 2, 2]. [2024-11-22 23:08:22,751 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:08:22" (1/1) ... [2024-11-22 23:08:22,751 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:08:22" (1/1) ... [2024-11-22 23:08:22,755 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:08:22" (1/1) ... [2024-11-22 23:08:22,757 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:08:22" (1/1) ... [2024-11-22 23:08:22,761 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:08:22" (1/1) ... [2024-11-22 23:08:22,776 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:08:22" (1/1) ... [2024-11-22 23:08:22,779 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 23:08:22,783 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 23:08:22,783 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 23:08:22,784 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 23:08:22,787 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:08:22" (1/1) ... [2024-11-22 23:08:22,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 23:08:22,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:08:22,821 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 23:08:22,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 23:08:22,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 23:08:22,861 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 23:08:22,861 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 23:08:22,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 23:08:22,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 23:08:22,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-22 23:08:22,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-22 23:08:22,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-22 23:08:22,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-22 23:08:22,864 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_33_to_42_0 [2024-11-22 23:08:22,864 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_33_to_42_0 [2024-11-22 23:08:22,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 23:08:22,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 23:08:22,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-22 23:08:22,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-22 23:08:22,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-22 23:08:22,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 23:08:22,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 23:08:22,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 23:08:22,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 23:08:22,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-22 23:08:22,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-22 23:08:22,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-22 23:08:22,865 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-22 23:08:22,866 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-22 23:08:22,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-22 23:08:22,949 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 23:08:22,951 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 23:08:23,327 INFO L? ?]: Removed 129 outVars from TransFormulas that were not future-live. [2024-11-22 23:08:23,327 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 23:08:23,340 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 23:08:23,340 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 23:08:23,341 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:08:23 BoogieIcfgContainer [2024-11-22 23:08:23,341 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 23:08:23,342 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 23:08:23,342 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 23:08:23,345 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 23:08:23,345 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:08:22" (1/3) ... [2024-11-22 23:08:23,345 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@194bc75e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:08:23, skipping insertion in model container [2024-11-22 23:08:23,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:08:22" (2/3) ... [2024-11-22 23:08:23,346 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@194bc75e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:08:23, skipping insertion in model container [2024-11-22 23:08:23,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:08:23" (3/3) ... [2024-11-22 23:08:23,349 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_fermat2-ll.c [2024-11-22 23:08:23,361 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 23:08:23,361 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 56 error locations. [2024-11-22 23:08:23,415 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 23:08:23,420 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;@7b75d996, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 23:08:23,420 INFO L334 AbstractCegarLoop]: Starting to check reachability of 56 error locations. [2024-11-22 23:08:23,423 INFO L276 IsEmpty]: Start isEmpty. Operand has 144 states, 78 states have (on average 1.7820512820512822) internal successors, (139), 135 states have internal predecessors, (139), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-22 23:08:23,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-22 23:08:23,427 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:08:23,427 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-22 23:08:23,428 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_42_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_42_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-22 23:08:23,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:08:23,431 INFO L85 PathProgramCache]: Analyzing trace with hash 110289, now seen corresponding path program 1 times [2024-11-22 23:08:23,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:08:23,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415252299] [2024-11-22 23:08:23,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:08:23,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:08:23,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:08:23,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:08:23,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:08:23,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415252299] [2024-11-22 23:08:23,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415252299] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:08:23,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:08:23,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 23:08:23,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76127655] [2024-11-22 23:08:23,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:08:23,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 23:08:23,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:08:23,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 23:08:23,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 23:08:23,631 INFO L87 Difference]: Start difference. First operand has 144 states, 78 states have (on average 1.7820512820512822) internal successors, (139), 135 states have internal predecessors, (139), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 23:08:23,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:08:23,711 INFO L93 Difference]: Finished difference Result 269 states and 291 transitions. [2024-11-22 23:08:23,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 23:08:23,713 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-22 23:08:23,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:08:23,740 INFO L225 Difference]: With dead ends: 269 [2024-11-22 23:08:23,741 INFO L226 Difference]: Without dead ends: 131 [2024-11-22 23:08:23,745 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 23:08:23,749 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 15 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 23:08:23,761 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 232 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 23:08:23,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-22 23:08:23,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2024-11-22 23:08:23,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 73 states have (on average 1.6986301369863013) internal successors, (124), 123 states have internal predecessors, (124), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-22 23:08:23,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 134 transitions. [2024-11-22 23:08:23,803 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 134 transitions. Word has length 3 [2024-11-22 23:08:23,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:08:23,804 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 134 transitions. [2024-11-22 23:08:23,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 23:08:23,804 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 134 transitions. [2024-11-22 23:08:23,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-22 23:08:23,804 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:08:23,804 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-22 23:08:23,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 23:08:23,805 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_42_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_42_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-22 23:08:23,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:08:23,806 INFO L85 PathProgramCache]: Analyzing trace with hash 3419076, now seen corresponding path program 1 times [2024-11-22 23:08:23,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:08:23,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055070511] [2024-11-22 23:08:23,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:08:23,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:08:23,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:08:23,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:08:23,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:08:23,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055070511] [2024-11-22 23:08:23,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055070511] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:08:23,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:08:23,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 23:08:23,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6932786] [2024-11-22 23:08:23,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:08:23,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 23:08:23,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:08:23,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 23:08:23,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 23:08:23,874 INFO L87 Difference]: Start difference. First operand 131 states and 134 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 23:08:23,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:08:23,911 INFO L93 Difference]: Finished difference Result 131 states and 134 transitions. [2024-11-22 23:08:23,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 23:08:23,911 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-22 23:08:23,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:08:23,915 INFO L225 Difference]: With dead ends: 131 [2024-11-22 23:08:23,915 INFO L226 Difference]: Without dead ends: 127 [2024-11-22 23:08:23,915 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 23:08:23,916 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 14 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 23:08:23,916 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 219 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 23:08:23,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-22 23:08:23,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2024-11-22 23:08:23,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 73 states have (on average 1.643835616438356) internal successors, (120), 119 states have internal predecessors, (120), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-22 23:08:23,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 130 transitions. [2024-11-22 23:08:23,933 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 130 transitions. Word has length 4 [2024-11-22 23:08:23,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:08:23,933 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 130 transitions. [2024-11-22 23:08:23,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 23:08:23,934 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 130 transitions. [2024-11-22 23:08:23,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-22 23:08:23,934 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:08:23,934 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:08:23,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 23:08:23,934 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_42_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_42_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-22 23:08:23,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:08:23,935 INFO L85 PathProgramCache]: Analyzing trace with hash 791189384, now seen corresponding path program 1 times [2024-11-22 23:08:23,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:08:23,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251223073] [2024-11-22 23:08:23,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:08:23,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:08:23,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 23:08:23,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1389582744] [2024-11-22 23:08:23,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:08:23,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:08:23,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:08:23,966 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:08:23,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 23:08:24,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:08:24,012 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 23:08:24,015 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:08:24,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:08:24,068 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 23:08:24,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:08:24,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251223073] [2024-11-22 23:08:24,068 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 23:08:24,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389582744] [2024-11-22 23:08:24,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389582744] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:08:24,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:08:24,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 23:08:24,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165693533] [2024-11-22 23:08:24,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:08:24,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 23:08:24,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:08:24,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 23:08:24,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 23:08:24,070 INFO L87 Difference]: Start difference. First operand 127 states and 130 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 23:08:24,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:08:24,105 INFO L93 Difference]: Finished difference Result 127 states and 130 transitions. [2024-11-22 23:08:24,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 23:08:24,106 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-22 23:08:24,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:08:24,107 INFO L225 Difference]: With dead ends: 127 [2024-11-22 23:08:24,107 INFO L226 Difference]: Without dead ends: 125 [2024-11-22 23:08:24,107 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 23:08:24,108 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 10 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 23:08:24,108 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 219 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 23:08:24,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-11-22 23:08:24,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2024-11-22 23:08:24,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 73 states have (on average 1.6164383561643836) internal successors, (118), 117 states have internal predecessors, (118), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-22 23:08:24,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 128 transitions. [2024-11-22 23:08:24,120 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 128 transitions. Word has length 8 [2024-11-22 23:08:24,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:08:24,120 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 128 transitions. [2024-11-22 23:08:24,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 23:08:24,121 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 128 transitions. [2024-11-22 23:08:24,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-22 23:08:24,121 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:08:24,121 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:08:24,128 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 23:08:24,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:08:24,324 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_42_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_42_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-22 23:08:24,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:08:24,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1163428661, now seen corresponding path program 1 times [2024-11-22 23:08:24,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:08:24,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248186273] [2024-11-22 23:08:24,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:08:24,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:08:24,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 23:08:24,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [419045472] [2024-11-22 23:08:24,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:08:24,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:08:24,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:08:24,363 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:08:24,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 23:08:24,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:08:24,432 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-22 23:08:24,434 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:08:24,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-22 23:08:24,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-22 23:08:24,565 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 23:08:24,565 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 23:08:24,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:08:24,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248186273] [2024-11-22 23:08:24,566 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 23:08:24,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419045472] [2024-11-22 23:08:24,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419045472] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:08:24,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:08:24,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 23:08:24,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271577598] [2024-11-22 23:08:24,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:08:24,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 23:08:24,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:08:24,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 23:08:24,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 23:08:24,570 INFO L87 Difference]: Start difference. First operand 125 states and 128 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-22 23:08:24,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:08:24,634 INFO L93 Difference]: Finished difference Result 125 states and 128 transitions. [2024-11-22 23:08:24,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 23:08:24,634 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2024-11-22 23:08:24,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:08:24,635 INFO L225 Difference]: With dead ends: 125 [2024-11-22 23:08:24,635 INFO L226 Difference]: Without dead ends: 124 [2024-11-22 23:08:24,635 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-22 23:08:24,636 INFO L432 NwaCegarLoop]: 116 mSDtfsCounter, 109 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 23:08:24,636 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 328 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 23:08:24,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-11-22 23:08:24,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2024-11-22 23:08:24,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 73 states have (on average 1.6027397260273972) internal successors, (117), 116 states have internal predecessors, (117), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-22 23:08:24,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 127 transitions. [2024-11-22 23:08:24,648 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 127 transitions. Word has length 27 [2024-11-22 23:08:24,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:08:24,649 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 127 transitions. [2024-11-22 23:08:24,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-22 23:08:24,649 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 127 transitions. [2024-11-22 23:08:24,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-22 23:08:24,650 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:08:24,650 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:08:24,657 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 23:08:24,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-22 23:08:24,857 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_42_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_42_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-22 23:08:24,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:08:24,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1706549978, now seen corresponding path program 1 times [2024-11-22 23:08:24,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:08:24,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888775818] [2024-11-22 23:08:24,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:08:24,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:08:24,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat