./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_mannadiv.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_mannadiv.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 305ef194ca8c72f4da0a6deb18ed40b72305718d65c18a21aa3fcb3830c499e5 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 14:03:24,161 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 14:03:24,244 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-13 14:03:24,250 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 14:03:24,251 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 14:03:24,281 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 14:03:24,282 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 14:03:24,282 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 14:03:24,283 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 14:03:24,287 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 14:03:24,287 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 14:03:24,287 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 14:03:24,288 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 14:03:24,288 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 14:03:24,288 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 14:03:24,289 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 14:03:24,289 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 14:03:24,289 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 14:03:24,290 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 14:03:24,290 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 14:03:24,292 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 14:03:24,292 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 14:03:24,293 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 14:03:24,293 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 14:03:24,293 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 14:03:24,293 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-13 14:03:24,294 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 14:03:24,294 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 14:03:24,294 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 14:03:24,294 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 14:03:24,295 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 14:03:24,295 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 14:03:24,295 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 14:03:24,296 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 14:03:24,296 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 14:03:24,296 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 14:03:24,297 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 14:03:24,297 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 14:03:24,297 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 14:03:24,297 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 14:03:24,297 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 14:03:24,298 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 14:03:24,299 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 14:03:24,299 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 14:03:24,300 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 305ef194ca8c72f4da0a6deb18ed40b72305718d65c18a21aa3fcb3830c499e5 [2024-10-13 14:03:24,571 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 14:03:24,595 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 14:03:24,600 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 14:03:24,601 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 14:03:24,601 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 14:03:24,602 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_mannadiv.c [2024-10-13 14:03:26,167 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 14:03:26,365 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 14:03:26,366 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_mannadiv.c [2024-10-13 14:03:26,376 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c20c34cc/0cc29ad9dae84eeb9b9134950d033332/FLAG58645c2ef [2024-10-13 14:03:26,392 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c20c34cc/0cc29ad9dae84eeb9b9134950d033332 [2024-10-13 14:03:26,394 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 14:03:26,396 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 14:03:26,397 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 14:03:26,397 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 14:03:26,407 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 14:03:26,407 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:03:26" (1/1) ... [2024-10-13 14:03:26,408 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e3ec22b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:03:26, skipping insertion in model container [2024-10-13 14:03:26,408 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:03:26" (1/1) ... [2024-10-13 14:03:26,431 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 14:03:26,610 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 14:03:26,629 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 14:03:26,660 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 14:03:26,681 INFO L204 MainTranslator]: Completed translation [2024-10-13 14:03:26,681 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:03:26 WrapperNode [2024-10-13 14:03:26,682 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 14:03:26,683 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 14:03:26,683 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 14:03:26,683 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 14:03:26,690 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:03:26" (1/1) ... [2024-10-13 14:03:26,699 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:03:26" (1/1) ... [2024-10-13 14:03:26,723 INFO L138 Inliner]: procedures = 16, calls = 58, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 75 [2024-10-13 14:03:26,725 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 14:03:26,726 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 14:03:26,726 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 14:03:26,726 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 14:03:26,737 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:03:26" (1/1) ... [2024-10-13 14:03:26,737 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:03:26" (1/1) ... [2024-10-13 14:03:26,739 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:03:26" (1/1) ... [2024-10-13 14:03:26,762 INFO L175 MemorySlicer]: Split 31 memory accesses to 6 slices as follows [2, 5, 5, 7, 7, 5]. 23 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0]. The 10 writes are split as follows [0, 2, 1, 3, 3, 1]. [2024-10-13 14:03:26,764 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:03:26" (1/1) ... [2024-10-13 14:03:26,764 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:03:26" (1/1) ... [2024-10-13 14:03:26,775 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:03:26" (1/1) ... [2024-10-13 14:03:26,781 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:03:26" (1/1) ... [2024-10-13 14:03:26,782 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:03:26" (1/1) ... [2024-10-13 14:03:26,784 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:03:26" (1/1) ... [2024-10-13 14:03:26,790 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 14:03:26,792 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 14:03:26,793 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 14:03:26,793 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 14:03:26,794 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:03:26" (1/1) ... [2024-10-13 14:03:26,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 14:03:26,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:03:26,827 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 14:03:26,829 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 14:03:26,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 14:03:26,867 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-13 14:03:26,867 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-13 14:03:26,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 14:03:26,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 14:03:26,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-13 14:03:26,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-13 14:03:26,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-13 14:03:26,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-13 14:03:26,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-13 14:03:26,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 14:03:26,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 14:03:26,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-13 14:03:26,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-13 14:03:26,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-13 14:03:26,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-10-13 14:03:26,869 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_31_to_42_0 [2024-10-13 14:03:26,869 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_31_to_42_0 [2024-10-13 14:03:26,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 14:03:26,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 14:03:26,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 14:03:26,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 14:03:26,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-13 14:03:26,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-13 14:03:26,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-13 14:03:26,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-10-13 14:03:26,874 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-13 14:03:26,874 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-13 14:03:26,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-13 14:03:26,962 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 14:03:26,964 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 14:03:27,221 INFO L? ?]: Removed 47 outVars from TransFormulas that were not future-live. [2024-10-13 14:03:27,221 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 14:03:27,277 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 14:03:27,277 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-13 14:03:27,278 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:03:27 BoogieIcfgContainer [2024-10-13 14:03:27,278 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 14:03:27,280 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 14:03:27,300 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 14:03:27,304 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 14:03:27,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:03:26" (1/3) ... [2024-10-13 14:03:27,305 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39876dea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:03:27, skipping insertion in model container [2024-10-13 14:03:27,305 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:03:26" (2/3) ... [2024-10-13 14:03:27,306 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39876dea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:03:27, skipping insertion in model container [2024-10-13 14:03:27,306 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:03:27" (3/3) ... [2024-10-13 14:03:27,307 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_mannadiv.c [2024-10-13 14:03:27,323 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 14:03:27,324 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2024-10-13 14:03:27,377 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 14:03:27,383 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;@6e5af442, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 14:03:27,384 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-10-13 14:03:27,387 INFO L276 IsEmpty]: Start isEmpty. Operand has 67 states, 37 states have (on average 1.6756756756756757) internal successors, (62), 58 states have internal predecessors, (62), 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) [2024-10-13 14:03:27,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-13 14:03:27,393 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:03:27,394 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:03:27,394 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_31_to_42_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_31_to_42_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_31_to_42_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-13 14:03:27,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:03:27,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1415622536, now seen corresponding path program 1 times [2024-10-13 14:03:27,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:03:27,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004060024] [2024-10-13 14:03:27,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:27,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:03:27,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:03:27,667 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-13 14:03:27,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:03:27,681 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-13 14:03:27,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:03:27,691 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 14:03:27,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:03:27,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004060024] [2024-10-13 14:03:27,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004060024] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:03:27,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:03:27,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 14:03:27,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142697017] [2024-10-13 14:03:27,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:03:27,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 14:03:27,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:03:27,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 14:03:27,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 14:03:27,728 INFO L87 Difference]: Start difference. First operand has 67 states, 37 states have (on average 1.6756756756756757) internal successors, (62), 58 states have internal predecessors, (62), 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 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-13 14:03:27,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:03:27,770 INFO L93 Difference]: Finished difference Result 132 states and 151 transitions. [2024-10-13 14:03:27,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 14:03:27,773 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2024-10-13 14:03:27,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:03:27,782 INFO L225 Difference]: With dead ends: 132 [2024-10-13 14:03:27,783 INFO L226 Difference]: Without dead ends: 64 [2024-10-13 14:03:27,787 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 14:03:27,792 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 14:03:27,795 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 69 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 14:03:27,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-10-13 14:03:27,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-10-13 14:03:27,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 36 states have (on average 1.5833333333333333) internal successors, (57), 56 states have internal predecessors, (57), 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) [2024-10-13 14:03:27,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 67 transitions. [2024-10-13 14:03:27,842 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 67 transitions. Word has length 17 [2024-10-13 14:03:27,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:03:27,843 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 67 transitions. [2024-10-13 14:03:27,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-13 14:03:27,844 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 67 transitions. [2024-10-13 14:03:27,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-13 14:03:27,845 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:03:27,845 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:03:27,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 14:03:27,846 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_31_to_42_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_31_to_42_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_31_to_42_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-13 14:03:27,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:03:27,847 INFO L85 PathProgramCache]: Analyzing trace with hash -404841340, now seen corresponding path program 1 times [2024-10-13 14:03:27,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:03:27,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147377500] [2024-10-13 14:03:27,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:27,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:03:27,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:03:27,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1406281099] [2024-10-13 14:03:27,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:27,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:03:27,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:03:27,931 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 14:03:27,934 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 14:03:28,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:03:28,057 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-13 14:03:28,065 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:03:28,126 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 14:03:28,174 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 14:03:28,174 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 14:03:28,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:03:28,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147377500] [2024-10-13 14:03:28,175 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:03:28,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406281099] [2024-10-13 14:03:28,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406281099] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:03:28,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:03:28,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 14:03:28,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692742787] [2024-10-13 14:03:28,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:03:28,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 14:03:28,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:03:28,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 14:03:28,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-13 14:03:28,180 INFO L87 Difference]: Start difference. First operand 64 states and 67 transitions. Second operand has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-13 14:03:28,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:03:28,375 INFO L93 Difference]: Finished difference Result 104 states and 113 transitions. [2024-10-13 14:03:28,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 14:03:28,379 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2024-10-13 14:03:28,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:03:28,385 INFO L225 Difference]: With dead ends: 104 [2024-10-13 14:03:28,385 INFO L226 Difference]: Without dead ends: 102 [2024-10-13 14:03:28,387 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-13 14:03:28,388 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 72 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 14:03:28,389 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 254 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 14:03:28,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-10-13 14:03:28,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 87. [2024-10-13 14:03:28,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 55 states have (on average 1.6) internal successors, (88), 76 states have internal predecessors, (88), 7 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2024-10-13 14:03:28,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 106 transitions. [2024-10-13 14:03:28,417 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 106 transitions. Word has length 17 [2024-10-13 14:03:28,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:03:28,418 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 106 transitions. [2024-10-13 14:03:28,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-13 14:03:28,418 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 106 transitions. [2024-10-13 14:03:28,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-13 14:03:28,419 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:03:28,419 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:03:28,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-13 14:03:28,619 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 14:03:28,620 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_31_to_42_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_31_to_42_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_31_to_42_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-13 14:03:28,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:03:28,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1789497382, now seen corresponding path program 1 times [2024-10-13 14:03:28,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:03:28,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676468585] [2024-10-13 14:03:28,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:28,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:03:28,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:03:29,020 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-13 14:03:29,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:03:29,028 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-13 14:03:29,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:03:29,032 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 14:03:29,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:03:29,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676468585] [2024-10-13 14:03:29,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676468585] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:03:29,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:03:29,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 14:03:29,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548075445] [2024-10-13 14:03:29,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:03:29,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 14:03:29,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:03:29,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 14:03:29,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-13 14:03:29,039 INFO L87 Difference]: Start difference. First operand 87 states and 106 transitions. Second operand has 7 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-13 14:03:29,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:03:29,286 INFO L93 Difference]: Finished difference Result 150 states and 189 transitions. [2024-10-13 14:03:29,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 14:03:29,287 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2024-10-13 14:03:29,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:03:29,289 INFO L225 Difference]: With dead ends: 150 [2024-10-13 14:03:29,289 INFO L226 Difference]: Without dead ends: 149 [2024-10-13 14:03:29,290 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-13 14:03:29,291 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 76 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-13 14:03:29,291 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 290 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-13 14:03:29,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-10-13 14:03:29,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 114. [2024-10-13 14:03:29,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 77 states have (on average 1.5584415584415585) internal successors, (120), 99 states have internal predecessors, (120), 10 states have call successors, (10), 6 states have call predecessors, (10), 7 states have return successors, (15), 9 states have call predecessors, (15), 10 states have call successors, (15) [2024-10-13 14:03:29,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 145 transitions. [2024-10-13 14:03:29,307 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 145 transitions. Word has length 19 [2024-10-13 14:03:29,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:03:29,307 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 145 transitions. [2024-10-13 14:03:29,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-13 14:03:29,308 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 145 transitions. [2024-10-13 14:03:29,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-10-13 14:03:29,308 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:03:29,308 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 14:03:29,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 14:03:29,309 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_31_to_42_0Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_31_to_42_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_31_to_42_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-13 14:03:29,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:03:29,309 INFO L85 PathProgramCache]: Analyzing trace with hash -360155965, now seen corresponding path program 1 times [2024-10-13 14:03:29,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:03:29,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443488602] [2024-10-13 14:03:29,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:29,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:03:29,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:03:29,575 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-13 14:03:29,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:03:29,578 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-13 14:03:29,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:03:29,581 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 14:03:29,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:03:29,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443488602] [2024-10-13 14:03:29,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443488602] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:03:29,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:03:29,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 14:03:29,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575270300] [2024-10-13 14:03:29,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:03:29,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 14:03:29,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:03:29,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 14:03:29,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-13 14:03:29,586 INFO L87 Difference]: Start difference. First operand 114 states and 145 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-13 14:03:29,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:03:29,891 INFO L93 Difference]: Finished difference Result 149 states and 187 transitions. [2024-10-13 14:03:29,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 14:03:29,892 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2024-10-13 14:03:29,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:03:29,893 INFO L225 Difference]: With dead ends: 149 [2024-10-13 14:03:29,893 INFO L226 Difference]: Without dead ends: 148 [2024-10-13 14:03:29,894 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-13 14:03:29,896 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 73 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-13 14:03:29,897 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 248 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-13 14:03:29,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-10-13 14:03:29,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 114. [2024-10-13 14:03:29,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 77 states have (on average 1.5324675324675325) internal successors, (118), 99 states have internal predecessors, (118), 10 states have call successors, (10), 6 states have call predecessors, (10), 7 states have return successors, (15), 9 states have call predecessors, (15), 10 states have call successors, (15) [2024-10-13 14:03:29,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 143 transitions. [2024-10-13 14:03:29,926 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 143 transitions. Word has length 20 [2024-10-13 14:03:29,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:03:29,926 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 143 transitions. [2024-10-13 14:03:29,926 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-13 14:03:29,926 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 143 transitions. [2024-10-13 14:03:29,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-13 14:03:29,927 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:03:29,930 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 14:03:29,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 14:03:29,930 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_31_to_42_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_31_to_42_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_31_to_42_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-13 14:03:29,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:03:29,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1720067016, now seen corresponding path program 1 times [2024-10-13 14:03:29,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:03:29,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762754645] [2024-10-13 14:03:29,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:29,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:03:29,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat