./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd-ll.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 494d69f416dd1b0b56dc0371ee72744b83dbc298da37778d271d6f779b4cdcdc --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 02:34:59,208 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 02:34:59,263 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-01-10 02:34:59,267 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 02:34:59,267 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 02:34:59,289 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 02:34:59,289 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 02:34:59,289 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 02:34:59,290 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 02:34:59,290 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 02:34:59,290 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 02:34:59,290 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 02:34:59,290 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 02:34:59,290 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 02:34:59,290 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 02:34:59,290 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 02:34:59,290 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-10 02:34:59,290 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 02:34:59,290 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 02:34:59,290 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 02:34:59,291 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 02:34:59,291 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-10 02:34:59,291 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 02:34:59,291 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-10 02:34:59,292 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-01-10 02:34:59,293 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 02:34:59,293 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 02:34:59,293 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-10 02:34:59,293 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 02:34:59,293 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 02:34:59,293 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 02:34:59,293 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 02:34:59,293 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 02:34:59,293 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 02:34:59,293 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 02:34:59,294 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 02:34:59,294 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 02:34:59,297 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 02:34:59,297 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 02:34:59,297 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 02:34:59,298 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 02:34:59,298 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 02:34:59,298 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-10 02:34:59,298 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-10 02:34:59,298 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 02:34:59,298 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 02:34:59,298 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 02:34:59,298 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 02:34:59,298 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 02:34:59,298 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 02:34:59,298 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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-jdk21/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 -> 494d69f416dd1b0b56dc0371ee72744b83dbc298da37778d271d6f779b4cdcdc [2025-01-10 02:34:59,501 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 02:34:59,506 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 02:34:59,508 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 02:34:59,509 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 02:34:59,509 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 02:34:59,510 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd-ll.c [2025-01-10 02:35:00,603 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/fb161afcc/c842e1a1dc844bd39a4513b33dd06a66/FLAG68eadcbd2 [2025-01-10 02:35:00,833 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 02:35:00,833 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd-ll.c [2025-01-10 02:35:00,844 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/fb161afcc/c842e1a1dc844bd39a4513b33dd06a66/FLAG68eadcbd2 [2025-01-10 02:35:01,184 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/fb161afcc/c842e1a1dc844bd39a4513b33dd06a66 [2025-01-10 02:35:01,187 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 02:35:01,188 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 02:35:01,189 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 02:35:01,189 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 02:35:01,192 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 02:35:01,192 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:35:01" (1/1) ... [2025-01-10 02:35:01,193 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a256ce1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:01, skipping insertion in model container [2025-01-10 02:35:01,193 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:35:01" (1/1) ... [2025-01-10 02:35:01,205 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 02:35:01,312 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 02:35:01,319 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 02:35:01,340 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 02:35:01,349 INFO L204 MainTranslator]: Completed translation [2025-01-10 02:35:01,350 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:01 WrapperNode [2025-01-10 02:35:01,350 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 02:35:01,350 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 02:35:01,351 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 02:35:01,351 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 02:35:01,355 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:01" (1/1) ... [2025-01-10 02:35:01,360 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:01" (1/1) ... [2025-01-10 02:35:01,378 INFO L138 Inliner]: procedures = 16, calls = 107, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 144 [2025-01-10 02:35:01,382 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 02:35:01,382 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 02:35:01,383 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 02:35:01,383 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 02:35:01,390 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:01" (1/1) ... [2025-01-10 02:35:01,391 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:01" (1/1) ... [2025-01-10 02:35:01,398 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:01" (1/1) ... [2025-01-10 02:35:01,423 INFO L175 MemorySlicer]: Split 66 memory accesses to 9 slices as follows [2, 7, 7, 8, 10, 8, 8, 8, 8]. 15 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0, 0, 0]. The 14 writes are split as follows [0, 1, 1, 2, 2, 2, 2, 2, 2]. [2025-01-10 02:35:01,424 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:01" (1/1) ... [2025-01-10 02:35:01,424 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:01" (1/1) ... [2025-01-10 02:35:01,429 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:01" (1/1) ... [2025-01-10 02:35:01,430 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:01" (1/1) ... [2025-01-10 02:35:01,431 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:01" (1/1) ... [2025-01-10 02:35:01,433 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:01" (1/1) ... [2025-01-10 02:35:01,433 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:01" (1/1) ... [2025-01-10 02:35:01,440 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 02:35:01,441 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 02:35:01,441 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 02:35:01,441 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 02:35:01,442 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:01" (1/1) ... [2025-01-10 02:35:01,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 02:35:01,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:35:01,467 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-10 02:35:01,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-10 02:35:01,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 02:35:01,488 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_33_to_48_0 [2025-01-10 02:35:01,488 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_33_to_48_0 [2025-01-10 02:35:01,488 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-01-10 02:35:01,488 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-01-10 02:35:01,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 02:35:01,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-10 02:35:01,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-01-10 02:35:01,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-01-10 02:35:01,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-01-10 02:35:01,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-01-10 02:35:01,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-01-10 02:35:01,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-01-10 02:35:01,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-01-10 02:35:01,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-10 02:35:01,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-10 02:35:01,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-10 02:35:01,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-01-10 02:35:01,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-01-10 02:35:01,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-01-10 02:35:01,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-01-10 02:35:01,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-01-10 02:35:01,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2025-01-10 02:35:01,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2025-01-10 02:35:01,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 02:35:01,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 02:35:01,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-10 02:35:01,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-10 02:35:01,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-01-10 02:35:01,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-01-10 02:35:01,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-01-10 02:35:01,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-01-10 02:35:01,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-01-10 02:35:01,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2025-01-10 02:35:01,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2025-01-10 02:35:01,492 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-01-10 02:35:01,492 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-01-10 02:35:01,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-10 02:35:01,588 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 02:35:01,589 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 02:35:02,042 INFO L? ?]: Removed 165 outVars from TransFormulas that were not future-live. [2025-01-10 02:35:02,042 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 02:35:02,050 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 02:35:02,050 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-01-10 02:35:02,051 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:35:02 BoogieIcfgContainer [2025-01-10 02:35:02,051 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 02:35:02,052 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 02:35:02,053 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 02:35:02,056 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 02:35:02,056 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 02:35:01" (1/3) ... [2025-01-10 02:35:02,056 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b3bb38d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:35:02, skipping insertion in model container [2025-01-10 02:35:02,056 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:01" (2/3) ... [2025-01-10 02:35:02,056 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b3bb38d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:35:02, skipping insertion in model container [2025-01-10 02:35:02,056 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:35:02" (3/3) ... [2025-01-10 02:35:02,057 INFO L128 eAbstractionObserver]: Analyzing ICFG recursified_egcd-ll.c [2025-01-10 02:35:02,068 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 02:35:02,069 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG recursified_egcd-ll.c that has 4 procedures, 154 locations, 1 initial locations, 0 loop locations, and 56 error locations. [2025-01-10 02:35:02,118 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 02:35:02,128 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;@2fcaaeb9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 02:35:02,129 INFO L334 AbstractCegarLoop]: Starting to check reachability of 56 error locations. [2025-01-10 02:35:02,132 INFO L276 IsEmpty]: Start isEmpty. Operand has 154 states, 83 states have (on average 1.7349397590361446) internal successors, (144), 140 states have internal predecessors, (144), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2025-01-10 02:35:02,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-01-10 02:35:02,137 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:35:02,138 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:35:02,138 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-01-10 02:35:02,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:35:02,143 INFO L85 PathProgramCache]: Analyzing trace with hash 102717811, now seen corresponding path program 1 times [2025-01-10 02:35:02,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:35:02,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804362899] [2025-01-10 02:35:02,149 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:02,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:35:02,215 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-10 02:35:02,242 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-10 02:35:02,244 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:02,244 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:35:02,319 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-10 02:35:02,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:35:02,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804362899] [2025-01-10 02:35:02,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804362899] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:35:02,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282879918] [2025-01-10 02:35:02,320 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:02,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:02,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:35:02,324 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:35:02,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-10 02:35:02,417 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-10 02:35:02,451 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-10 02:35:02,451 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:02,451 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:35:02,453 INFO L256 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-01-10 02:35:02,455 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:35:02,461 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-10 02:35:02,462 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 02:35:02,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282879918] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:35:02,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 02:35:02,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-01-10 02:35:02,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847025629] [2025-01-10 02:35:02,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:35:02,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-10 02:35:02,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:35:02,479 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-10 02:35:02,479 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-10 02:35:02,481 INFO L87 Difference]: Start difference. First operand has 154 states, 83 states have (on average 1.7349397590361446) internal successors, (144), 140 states have internal predecessors, (144), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 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), 2 states have call successors, (2) [2025-01-10 02:35:02,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:35:02,507 INFO L93 Difference]: Finished difference Result 304 states and 338 transitions. [2025-01-10 02:35:02,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-10 02:35:02,508 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 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), 2 states have call successors, (2) Word has length 18 [2025-01-10 02:35:02,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:35:02,512 INFO L225 Difference]: With dead ends: 304 [2025-01-10 02:35:02,513 INFO L226 Difference]: Without dead ends: 147 [2025-01-10 02:35:02,516 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-10 02:35:02,517 INFO L435 NwaCegarLoop]: 162 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-10 02:35:02,517 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-10 02:35:02,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2025-01-10 02:35:02,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2025-01-10 02:35:02,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 78 states have (on average 1.7307692307692308) internal successors, (135), 134 states have internal predecessors, (135), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2025-01-10 02:35:02,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 155 transitions. [2025-01-10 02:35:02,554 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 155 transitions. Word has length 18 [2025-01-10 02:35:02,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:35:02,555 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 155 transitions. [2025-01-10 02:35:02,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 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), 2 states have call successors, (2) [2025-01-10 02:35:02,555 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 155 transitions. [2025-01-10 02:35:02,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-01-10 02:35:02,556 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:35:02,556 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:35:02,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-01-10 02:35:02,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-01-10 02:35:02,761 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-01-10 02:35:02,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:35:02,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1717746065, now seen corresponding path program 1 times [2025-01-10 02:35:02,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:35:02,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087385606] [2025-01-10 02:35:02,762 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:02,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:35:02,777 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-10 02:35:02,809 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-10 02:35:02,810 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:02,810 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-10 02:35:02,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2012545095] [2025-01-10 02:35:02,813 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:02,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:02,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:35:02,815 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:35:02,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-10 02:35:02,881 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-10 02:35:02,914 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-10 02:35:02,915 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:02,915 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:35:02,921 INFO L256 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-01-10 02:35:02,925 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:35:02,967 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 [2025-01-10 02:35:02,980 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 [2025-01-10 02:35:03,034 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 [2025-01-10 02:35:03,045 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-10 02:35:03,045 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 02:35:03,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:35:03,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087385606] [2025-01-10 02:35:03,046 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-10 02:35:03,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012545095] [2025-01-10 02:35:03,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012545095] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:35:03,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:35:03,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-10 02:35:03,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108557377] [2025-01-10 02:35:03,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:35:03,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 02:35:03,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:35:03,048 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 02:35:03,048 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-10 02:35:03,048 INFO L87 Difference]: Start difference. First operand 147 states and 155 transitions. Second operand has 6 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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) [2025-01-10 02:35:03,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:35:03,262 INFO L93 Difference]: Finished difference Result 244 states and 259 transitions. [2025-01-10 02:35:03,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 02:35:03,262 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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 18 [2025-01-10 02:35:03,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:35:03,265 INFO L225 Difference]: With dead ends: 244 [2025-01-10 02:35:03,265 INFO L226 Difference]: Without dead ends: 243 [2025-01-10 02:35:03,265 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-01-10 02:35:03,266 INFO L435 NwaCegarLoop]: 136 mSDtfsCounter, 159 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-10 02:35:03,266 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 659 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-10 02:35:03,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2025-01-10 02:35:03,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 176. [2025-01-10 02:35:03,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 103 states have (on average 1.7281553398058251) internal successors, (178), 159 states have internal predecessors, (178), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2025-01-10 02:35:03,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 205 transitions. [2025-01-10 02:35:03,287 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 205 transitions. Word has length 18 [2025-01-10 02:35:03,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:35:03,288 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 205 transitions. [2025-01-10 02:35:03,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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) [2025-01-10 02:35:03,288 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 205 transitions. [2025-01-10 02:35:03,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-01-10 02:35:03,288 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:35:03,288 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:35:03,295 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-10 02:35:03,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:03,489 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-01-10 02:35:03,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:35:03,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1710520426, now seen corresponding path program 1 times [2025-01-10 02:35:03,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:35:03,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002016815] [2025-01-10 02:35:03,490 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:03,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:35:03,503 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-10 02:35:03,529 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 02:35:03,529 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:03,530 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-10 02:35:03,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1845154686] [2025-01-10 02:35:03,532 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:03,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:03,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:35:03,533 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:35:03,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-10 02:35:03,604 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-10 02:35:03,632 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 02:35:03,632 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:03,632 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:35:03,633 INFO L256 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-01-10 02:35:03,635 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:35:03,641 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 [2025-01-10 02:35:03,645 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 [2025-01-10 02:35:03,690 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-10 02:35:03,691 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 02:35:03,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:35:03,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002016815] [2025-01-10 02:35:03,691 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-10 02:35:03,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845154686] [2025-01-10 02:35:03,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845154686] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:35:03,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:35:03,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-10 02:35:03,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560596264] [2025-01-10 02:35:03,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:35:03,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 02:35:03,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:35:03,692 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 02:35:03,692 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-10 02:35:03,692 INFO L87 Difference]: Start difference. First operand 176 states and 205 transitions. Second operand has 6 states, 4 states have (on average 2.75) internal successors, (11), 5 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) [2025-01-10 02:35:03,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:35:03,861 INFO L93 Difference]: Finished difference Result 243 states and 258 transitions. [2025-01-10 02:35:03,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 02:35:03,861 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.75) internal successors, (11), 5 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 [2025-01-10 02:35:03,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:35:03,862 INFO L225 Difference]: With dead ends: 243 [2025-01-10 02:35:03,862 INFO L226 Difference]: Without dead ends: 242 [2025-01-10 02:35:03,862 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-01-10 02:35:03,863 INFO L435 NwaCegarLoop]: 137 mSDtfsCounter, 156 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-10 02:35:03,863 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 661 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-10 02:35:03,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2025-01-10 02:35:03,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 176. [2025-01-10 02:35:03,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 103 states have (on average 1.7184466019417475) internal successors, (177), 159 states have internal predecessors, (177), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2025-01-10 02:35:03,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 204 transitions. [2025-01-10 02:35:03,881 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 204 transitions. Word has length 19 [2025-01-10 02:35:03,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:35:03,881 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 204 transitions. [2025-01-10 02:35:03,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.75) internal successors, (11), 5 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) [2025-01-10 02:35:03,882 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 204 transitions. [2025-01-10 02:35:03,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-01-10 02:35:03,882 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:35:03,882 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:35:03,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-01-10 02:35:04,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:04,083 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_33_to_48_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-01-10 02:35:04,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:35:04,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1486525615, now seen corresponding path program 1 times [2025-01-10 02:35:04,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:35:04,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425889345] [2025-01-10 02:35:04,084 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:04,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:35:04,097 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-10 02:35:04,119 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-10 02:35:04,119 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:04,119 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-10 02:35:04,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2083613977] [2025-01-10 02:35:04,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:04,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:04,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:35:04,123 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:35:04,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-10 02:35:04,184 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-10 02:35:04,210 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-10 02:35:04,211 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:04,211 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:35:04,215 INFO L256 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-01-10 02:35:04,218 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:35:04,227 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 [2025-01-10 02:35:04,249 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-10 02:35:04,249 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 02:35:04,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:35:04,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425889345] [2025-01-10 02:35:04,250 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-10 02:35:04,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083613977] [2025-01-10 02:35:04,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083613977] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:35:04,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:35:04,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-10 02:35:04,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287429814] [2025-01-10 02:35:04,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:35:04,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 02:35:04,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:35:04,251 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 02:35:04,251 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-10 02:35:04,251 INFO L87 Difference]: Start difference. First operand 176 states and 204 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) [2025-01-10 02:35:04,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:35:04,387 INFO L93 Difference]: Finished difference Result 290 states and 328 transitions. [2025-01-10 02:35:04,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-10 02:35:04,388 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 [2025-01-10 02:35:04,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:35:04,390 INFO L225 Difference]: With dead ends: 290 [2025-01-10 02:35:04,390 INFO L226 Difference]: Without dead ends: 288 [2025-01-10 02:35:04,390 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-01-10 02:35:04,392 INFO L435 NwaCegarLoop]: 142 mSDtfsCounter, 167 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-10 02:35:04,393 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 678 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-10 02:35:04,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2025-01-10 02:35:04,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 215. [2025-01-10 02:35:04,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 136 states have (on average 1.7058823529411764) internal successors, (232), 193 states have internal predecessors, (232), 17 states have call successors, (17), 5 states have call predecessors, (17), 6 states have return successors, (21), 17 states have call predecessors, (21), 17 states have call successors, (21) [2025-01-10 02:35:04,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 270 transitions. [2025-01-10 02:35:04,425 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 270 transitions. Word has length 20 [2025-01-10 02:35:04,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:35:04,425 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 270 transitions. [2025-01-10 02:35:04,425 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) [2025-01-10 02:35:04,426 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 270 transitions. [2025-01-10 02:35:04,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-01-10 02:35:04,426 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:35:04,426 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:35:04,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-01-10 02:35:04,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:04,630 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_33_to_48_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-01-10 02:35:04,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:35:04,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1672994867, now seen corresponding path program 1 times [2025-01-10 02:35:04,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:35:04,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181433897] [2025-01-10 02:35:04,631 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:04,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:35:04,642 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-01-10 02:35:04,658 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-01-10 02:35:04,658 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:04,658 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-10 02:35:04,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [780480461] [2025-01-10 02:35:04,660 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:04,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:04,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:35:04,662 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:35:04,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-10 02:35:04,724 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-01-10 02:35:04,749 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-01-10 02:35:04,749 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:04,749 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:35:04,750 INFO L256 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 47 conjuncts are in the unsatisfiable core [2025-01-10 02:35:04,752 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:35:04,759 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 [2025-01-10 02:35:04,762 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 [2025-01-10 02:35:04,772 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 [2025-01-10 02:35:04,864 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-10 02:35:04,864 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 02:35:04,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:35:04,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181433897] [2025-01-10 02:35:04,865 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-10 02:35:04,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780480461] [2025-01-10 02:35:04,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780480461] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:35:04,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:35:04,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-10 02:35:04,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874191379] [2025-01-10 02:35:04,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:35:04,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-10 02:35:04,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:35:04,865 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-10 02:35:04,865 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-01-10 02:35:04,866 INFO L87 Difference]: Start difference. First operand 215 states and 270 transitions. Second operand has 7 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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) [2025-01-10 02:35:05,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:35:05,064 INFO L93 Difference]: Finished difference Result 275 states and 319 transitions. [2025-01-10 02:35:05,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-10 02:35:05,065 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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 22 [2025-01-10 02:35:05,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:35:05,066 INFO L225 Difference]: With dead ends: 275 [2025-01-10 02:35:05,066 INFO L226 Difference]: Without dead ends: 273 [2025-01-10 02:35:05,066 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2025-01-10 02:35:05,067 INFO L435 NwaCegarLoop]: 136 mSDtfsCounter, 140 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-10 02:35:05,067 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 765 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-10 02:35:05,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2025-01-10 02:35:05,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 215. [2025-01-10 02:35:05,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 136 states have (on average 1.6911764705882353) internal successors, (230), 193 states have internal predecessors, (230), 17 states have call successors, (17), 5 states have call predecessors, (17), 6 states have return successors, (21), 17 states have call predecessors, (21), 17 states have call successors, (21) [2025-01-10 02:35:05,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 268 transitions. [2025-01-10 02:35:05,076 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 268 transitions. Word has length 22 [2025-01-10 02:35:05,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:35:05,077 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 268 transitions. [2025-01-10 02:35:05,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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) [2025-01-10 02:35:05,077 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 268 transitions. [2025-01-10 02:35:05,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-01-10 02:35:05,077 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:35:05,077 INFO L218 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, 1, 1] [2025-01-10 02:35:05,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-01-10 02:35:05,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:05,278 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_33_to_48_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-01-10 02:35:05,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:35:05,278 INFO L85 PathProgramCache]: Analyzing trace with hash -2003485438, now seen corresponding path program 1 times [2025-01-10 02:35:05,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:35:05,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547632204] [2025-01-10 02:35:05,278 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:05,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:35:05,291 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-01-10 02:35:05,309 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-01-10 02:35:05,309 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:05,309 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-10 02:35:05,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1092903114] [2025-01-10 02:35:05,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:05,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:05,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:35:05,317 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:35:05,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-01-10 02:35:05,382 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-01-10 02:35:05,412 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-01-10 02:35:05,412 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:05,413 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:35:05,414 INFO L256 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-01-10 02:35:05,416 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:35:05,419 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 [2025-01-10 02:35:05,443 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 [2025-01-10 02:35:05,577 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 [2025-01-10 02:35:05,592 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 02:35:05,592 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 02:35:05,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:35:05,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547632204] [2025-01-10 02:35:05,592 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-10 02:35:05,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092903114] [2025-01-10 02:35:05,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092903114] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:35:05,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:35:05,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-01-10 02:35:05,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419980891] [2025-01-10 02:35:05,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:35:05,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-10 02:35:05,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:35:05,593 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-10 02:35:05,593 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-01-10 02:35:05,593 INFO L87 Difference]: Start difference. First operand 215 states and 268 transitions. Second operand has 11 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-10 02:35:05,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:35:05,895 INFO L93 Difference]: Finished difference Result 387 states and 458 transitions. [2025-01-10 02:35:05,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-01-10 02:35:05,896 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 30 [2025-01-10 02:35:05,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:35:05,898 INFO L225 Difference]: With dead ends: 387 [2025-01-10 02:35:05,898 INFO L226 Difference]: Without dead ends: 386 [2025-01-10 02:35:05,898 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2025-01-10 02:35:05,898 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 307 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 1064 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-10 02:35:05,899 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 1064 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-10 02:35:05,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2025-01-10 02:35:05,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 283. [2025-01-10 02:35:05,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 194 states have (on average 1.7061855670103092) internal successors, (331), 252 states have internal predecessors, (331), 24 states have call successors, (24), 7 states have call predecessors, (24), 9 states have return successors, (31), 24 states have call predecessors, (31), 24 states have call successors, (31) [2025-01-10 02:35:05,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 386 transitions. [2025-01-10 02:35:05,916 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 386 transitions. Word has length 30 [2025-01-10 02:35:05,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:35:05,916 INFO L471 AbstractCegarLoop]: Abstraction has 283 states and 386 transitions. [2025-01-10 02:35:05,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-10 02:35:05,916 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 386 transitions. [2025-01-10 02:35:05,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-01-10 02:35:05,917 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:35:05,917 INFO L218 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, 1, 1, 1] [2025-01-10 02:35:05,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-01-10 02:35:06,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-01-10 02:35:06,118 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_33_to_48_0Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-01-10 02:35:06,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:35:06,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1978506383, now seen corresponding path program 1 times [2025-01-10 02:35:06,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:35:06,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40732712] [2025-01-10 02:35:06,118 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:06,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:35:06,131 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-01-10 02:35:06,151 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-01-10 02:35:06,152 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:06,152 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-10 02:35:06,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1679035918] [2025-01-10 02:35:06,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:06,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:06,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:35:06,158 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:35:06,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-01-10 02:35:06,229 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-01-10 02:35:06,258 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-01-10 02:35:06,258 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:06,258 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:35:06,264 INFO L256 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-01-10 02:35:06,267 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:35:06,272 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 [2025-01-10 02:35:06,306 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 [2025-01-10 02:35:06,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-01-10 02:35:06,421 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 02:35:06,421 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 02:35:06,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:35:06,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40732712] [2025-01-10 02:35:06,421 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-10 02:35:06,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679035918] [2025-01-10 02:35:06,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679035918] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:35:06,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:35:06,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-01-10 02:35:06,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213547169] [2025-01-10 02:35:06,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:35:06,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-10 02:35:06,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:35:06,422 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-10 02:35:06,423 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-01-10 02:35:06,423 INFO L87 Difference]: Start difference. First operand 283 states and 386 transitions. Second operand has 11 states, 8 states have (on average 3.0) internal successors, (24), 9 states have internal predecessors, (24), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-10 02:35:06,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:35:06,711 INFO L93 Difference]: Finished difference Result 386 states and 456 transitions. [2025-01-10 02:35:06,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-01-10 02:35:06,712 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 3.0) internal successors, (24), 9 states have internal predecessors, (24), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 31 [2025-01-10 02:35:06,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:35:06,714 INFO L225 Difference]: With dead ends: 386 [2025-01-10 02:35:06,714 INFO L226 Difference]: Without dead ends: 385 [2025-01-10 02:35:06,714 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2025-01-10 02:35:06,714 INFO L435 NwaCegarLoop]: 128 mSDtfsCounter, 390 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 977 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-10 02:35:06,715 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 977 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-10 02:35:06,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2025-01-10 02:35:06,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 283. [2025-01-10 02:35:06,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 194 states have (on average 1.6958762886597938) internal successors, (329), 252 states have internal predecessors, (329), 24 states have call successors, (24), 7 states have call predecessors, (24), 9 states have return successors, (31), 24 states have call predecessors, (31), 24 states have call successors, (31) [2025-01-10 02:35:06,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 384 transitions. [2025-01-10 02:35:06,725 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 384 transitions. Word has length 31 [2025-01-10 02:35:06,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:35:06,725 INFO L471 AbstractCegarLoop]: Abstraction has 283 states and 384 transitions. [2025-01-10 02:35:06,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 3.0) internal successors, (24), 9 states have internal predecessors, (24), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-10 02:35:06,726 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 384 transitions. [2025-01-10 02:35:06,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-01-10 02:35:06,726 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:35:06,726 INFO L218 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, 1, 1, 1, 1] [2025-01-10 02:35:06,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-01-10 02:35:06,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:06,930 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_33_to_48_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-01-10 02:35:06,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:35:06,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1204155676, now seen corresponding path program 1 times [2025-01-10 02:35:06,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:35:06,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901977450] [2025-01-10 02:35:06,931 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:06,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:35:06,946 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-01-10 02:35:06,962 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-01-10 02:35:06,963 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:06,963 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-10 02:35:06,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [605514479] [2025-01-10 02:35:06,964 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:06,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:06,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:35:06,967 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:35:06,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-01-10 02:35:07,053 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-01-10 02:35:07,095 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-01-10 02:35:07,096 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:07,096 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:35:07,097 INFO L256 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-01-10 02:35:07,100 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:35:07,108 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 [2025-01-10 02:35:07,159 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 [2025-01-10 02:35:07,270 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 [2025-01-10 02:35:07,273 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 [2025-01-10 02:35:07,282 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 02:35:07,282 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:35:07,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:35:07,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901977450] [2025-01-10 02:35:07,382 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-10 02:35:07,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605514479] [2025-01-10 02:35:07,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605514479] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:35:07,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-01-10 02:35:07,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2025-01-10 02:35:07,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085828065] [2025-01-10 02:35:07,382 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-01-10 02:35:07,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-10 02:35:07,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:35:07,383 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-10 02:35:07,383 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2025-01-10 02:35:07,383 INFO L87 Difference]: Start difference. First operand 283 states and 384 transitions. Second operand has 12 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-10 02:35:11,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 02:35:15,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 02:35:19,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 02:35:23,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 02:35:27,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 02:35:31,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 02:35:31,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:35:31,814 INFO L93 Difference]: Finished difference Result 387 states and 453 transitions. [2025-01-10 02:35:31,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-01-10 02:35:31,814 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 32 [2025-01-10 02:35:31,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:35:31,816 INFO L225 Difference]: With dead ends: 387 [2025-01-10 02:35:31,816 INFO L226 Difference]: Without dead ends: 386 [2025-01-10 02:35:31,817 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2025-01-10 02:35:31,817 INFO L435 NwaCegarLoop]: 129 mSDtfsCounter, 357 mSDsluCounter, 1020 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 24 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 1149 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.3s IncrementalHoareTripleChecker+Time [2025-01-10 02:35:31,817 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 1149 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 330 Invalid, 6 Unknown, 0 Unchecked, 24.3s Time] [2025-01-10 02:35:31,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2025-01-10 02:35:31,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 287. [2025-01-10 02:35:31,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 197 states have (on average 1.6751269035532994) internal successors, (330), 255 states have internal predecessors, (330), 24 states have call successors, (24), 8 states have call predecessors, (24), 10 states have return successors, (31), 24 states have call predecessors, (31), 24 states have call successors, (31) [2025-01-10 02:35:31,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 385 transitions. [2025-01-10 02:35:31,832 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 385 transitions. Word has length 32 [2025-01-10 02:35:31,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:35:31,832 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 385 transitions. [2025-01-10 02:35:31,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-10 02:35:31,832 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 385 transitions. [2025-01-10 02:35:31,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-01-10 02:35:31,832 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:35:31,832 INFO L218 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, 1, 1, 1, 1, 1] [2025-01-10 02:35:31,840 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-01-10 02:35:32,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:32,035 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_33_to_48_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-01-10 02:35:32,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:35:32,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1325879763, now seen corresponding path program 1 times [2025-01-10 02:35:32,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:35:32,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638901283] [2025-01-10 02:35:32,035 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:32,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:35:32,045 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-01-10 02:35:32,063 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-01-10 02:35:32,063 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:32,063 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-10 02:35:32,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1932177484] [2025-01-10 02:35:32,066 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:32,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:32,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:35:32,067 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:35:32,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-01-10 02:35:32,130 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-01-10 02:35:32,160 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-01-10 02:35:32,160 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:32,160 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:35:32,168 INFO L256 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 35 conjuncts are in the unsatisfiable core [2025-01-10 02:35:32,170 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:35:32,175 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 [2025-01-10 02:35:32,298 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 [2025-01-10 02:35:32,554 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-10 02:35:32,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 25 [2025-01-10 02:35:32,580 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 02:35:32,580 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:35:32,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:35:32,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638901283] [2025-01-10 02:35:32,739 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-10 02:35:32,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932177484] [2025-01-10 02:35:32,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932177484] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:35:32,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-01-10 02:35:32,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2025-01-10 02:35:32,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68700140] [2025-01-10 02:35:32,739 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-01-10 02:35:32,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-01-10 02:35:32,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:35:32,740 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-01-10 02:35:32,740 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2025-01-10 02:35:32,740 INFO L87 Difference]: Start difference. First operand 287 states and 385 transitions. Second operand has 13 states, 10 states have (on average 2.6) internal successors, (26), 11 states have internal predecessors, (26), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-10 02:35:36,752 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 02:35:37,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:35:37,355 INFO L93 Difference]: Finished difference Result 386 states and 451 transitions. [2025-01-10 02:35:37,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-01-10 02:35:37,357 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 2.6) internal successors, (26), 11 states have internal predecessors, (26), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 33 [2025-01-10 02:35:37,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:35:37,359 INFO L225 Difference]: With dead ends: 386 [2025-01-10 02:35:37,359 INFO L226 Difference]: Without dead ends: 385 [2025-01-10 02:35:37,359 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2025-01-10 02:35:37,360 INFO L435 NwaCegarLoop]: 130 mSDtfsCounter, 453 mSDsluCounter, 998 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 33 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2025-01-10 02:35:37,360 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 1128 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 337 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2025-01-10 02:35:37,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2025-01-10 02:35:37,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 287. [2025-01-10 02:35:37,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 197 states have (on average 1.6649746192893402) internal successors, (328), 255 states have internal predecessors, (328), 24 states have call successors, (24), 8 states have call predecessors, (24), 10 states have return successors, (31), 24 states have call predecessors, (31), 24 states have call successors, (31) [2025-01-10 02:35:37,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 383 transitions. [2025-01-10 02:35:37,382 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 383 transitions. Word has length 33 [2025-01-10 02:35:37,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:35:37,383 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 383 transitions. [2025-01-10 02:35:37,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 2.6) internal successors, (26), 11 states have internal predecessors, (26), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-10 02:35:37,383 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 383 transitions. [2025-01-10 02:35:37,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-01-10 02:35:37,384 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:35:37,384 INFO L218 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, 1, 1, 1, 1, 1, 1] [2025-01-10 02:35:37,395 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-01-10 02:35:37,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:37,587 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_33_to_48_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-01-10 02:35:37,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:35:37,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1847400250, now seen corresponding path program 1 times [2025-01-10 02:35:37,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:35:37,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975586163] [2025-01-10 02:35:37,588 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:37,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:35:37,596 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-01-10 02:35:37,610 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-01-10 02:35:37,610 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:37,610 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-10 02:35:37,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1708599616] [2025-01-10 02:35:37,611 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:37,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:37,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:35:37,616 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:35:37,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-01-10 02:35:37,677 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-01-10 02:35:37,699 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-01-10 02:35:37,700 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:37,700 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:35:37,701 INFO L256 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-01-10 02:35:37,704 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:35:37,708 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 [2025-01-10 02:35:37,751 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 [2025-01-10 02:35:37,756 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 [2025-01-10 02:35:37,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2025-01-10 02:35:37,938 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-10 02:35:37,938 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 02:35:37,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:35:37,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975586163] [2025-01-10 02:35:37,938 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-10 02:35:37,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708599616] [2025-01-10 02:35:37,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708599616] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:35:37,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:35:37,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-01-10 02:35:37,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203559335] [2025-01-10 02:35:37,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:35:37,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-10 02:35:37,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:35:37,940 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-10 02:35:37,940 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-01-10 02:35:37,940 INFO L87 Difference]: Start difference. First operand 287 states and 383 transitions. Second operand has 10 states, 8 states have (on average 3.0) internal successors, (24), 9 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-10 02:35:38,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:35:38,275 INFO L93 Difference]: Finished difference Result 381 states and 445 transitions. [2025-01-10 02:35:38,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-10 02:35:38,275 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.0) internal successors, (24), 9 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 34 [2025-01-10 02:35:38,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:35:38,277 INFO L225 Difference]: With dead ends: 381 [2025-01-10 02:35:38,277 INFO L226 Difference]: Without dead ends: 380 [2025-01-10 02:35:38,277 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2025-01-10 02:35:38,277 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 506 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-10 02:35:38,278 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [511 Valid, 847 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-10 02:35:38,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2025-01-10 02:35:38,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 287. [2025-01-10 02:35:38,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 197 states have (on average 1.6548223350253808) internal successors, (326), 255 states have internal predecessors, (326), 24 states have call successors, (24), 8 states have call predecessors, (24), 10 states have return successors, (31), 24 states have call predecessors, (31), 24 states have call successors, (31) [2025-01-10 02:35:38,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 381 transitions. [2025-01-10 02:35:38,291 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 381 transitions. Word has length 34 [2025-01-10 02:35:38,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:35:38,293 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 381 transitions. [2025-01-10 02:35:38,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.0) internal successors, (24), 9 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-10 02:35:38,293 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 381 transitions. [2025-01-10 02:35:38,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-01-10 02:35:38,294 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:35:38,294 INFO L218 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, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:35:38,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-01-10 02:35:38,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-01-10 02:35:38,495 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_33_to_48_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-01-10 02:35:38,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:35:38,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1434832843, now seen corresponding path program 1 times [2025-01-10 02:35:38,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:35:38,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501287172] [2025-01-10 02:35:38,495 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:38,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:35:38,514 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-01-10 02:35:38,525 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-01-10 02:35:38,525 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:38,525 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-10 02:35:38,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2078025065] [2025-01-10 02:35:38,526 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:38,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:38,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:35:38,528 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:35:38,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-01-10 02:35:38,595 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-01-10 02:35:38,618 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-01-10 02:35:38,618 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:38,618 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:35:38,620 INFO L256 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-01-10 02:35:38,622 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:35:38,628 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 [2025-01-10 02:35:38,662 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 [2025-01-10 02:35:38,666 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 [2025-01-10 02:35:38,807 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 [2025-01-10 02:35:38,830 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-10 02:35:38,830 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 02:35:38,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:35:38,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501287172] [2025-01-10 02:35:38,830 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-10 02:35:38,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078025065] [2025-01-10 02:35:38,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078025065] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:35:38,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:35:38,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-01-10 02:35:38,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340619056] [2025-01-10 02:35:38,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:35:38,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-10 02:35:38,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:35:38,831 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-10 02:35:38,831 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-01-10 02:35:38,831 INFO L87 Difference]: Start difference. First operand 287 states and 381 transitions. Second operand has 10 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-10 02:35:39,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:35:39,194 INFO L93 Difference]: Finished difference Result 380 states and 443 transitions. [2025-01-10 02:35:39,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-10 02:35:39,194 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2025-01-10 02:35:39,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:35:39,197 INFO L225 Difference]: With dead ends: 380 [2025-01-10 02:35:39,197 INFO L226 Difference]: Without dead ends: 379 [2025-01-10 02:35:39,197 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2025-01-10 02:35:39,197 INFO L435 NwaCegarLoop]: 125 mSDtfsCounter, 431 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 917 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-10 02:35:39,197 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 917 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-10 02:35:39,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2025-01-10 02:35:39,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 287. [2025-01-10 02:35:39,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 197 states have (on average 1.6446700507614214) internal successors, (324), 255 states have internal predecessors, (324), 24 states have call successors, (24), 8 states have call predecessors, (24), 10 states have return successors, (31), 24 states have call predecessors, (31), 24 states have call successors, (31) [2025-01-10 02:35:39,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 379 transitions. [2025-01-10 02:35:39,216 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 379 transitions. Word has length 35 [2025-01-10 02:35:39,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:35:39,216 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 379 transitions. [2025-01-10 02:35:39,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-10 02:35:39,216 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 379 transitions. [2025-01-10 02:35:39,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-01-10 02:35:39,218 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:35:39,218 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:35:39,224 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-01-10 02:35:39,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-01-10 02:35:39,419 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_33_to_48_0Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-01-10 02:35:39,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:35:39,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1163856245, now seen corresponding path program 1 times [2025-01-10 02:35:39,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:35:39,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348991350] [2025-01-10 02:35:39,419 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:39,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:35:39,428 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-01-10 02:35:39,447 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-01-10 02:35:39,447 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:39,447 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-10 02:35:39,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [440973635] [2025-01-10 02:35:39,451 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:39,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:39,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:35:39,453 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:35:39,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-01-10 02:35:39,525 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-01-10 02:35:39,555 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-01-10 02:35:39,556 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:39,556 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:35:39,559 INFO L256 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-01-10 02:35:39,561 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:35:39,571 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 [2025-01-10 02:35:39,614 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 [2025-01-10 02:35:39,784 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 [2025-01-10 02:35:39,795 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-10 02:35:39,795 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:35:39,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:35:39,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348991350] [2025-01-10 02:35:39,844 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-10 02:35:39,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440973635] [2025-01-10 02:35:39,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440973635] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:35:39,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-01-10 02:35:39,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2025-01-10 02:35:39,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234477063] [2025-01-10 02:35:39,844 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-01-10 02:35:39,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-10 02:35:39,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:35:39,844 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-10 02:35:39,844 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2025-01-10 02:35:39,845 INFO L87 Difference]: Start difference. First operand 287 states and 379 transitions. Second operand has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 11 states have internal predecessors, (30), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2025-01-10 02:35:43,856 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 02:35:44,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:35:44,184 INFO L93 Difference]: Finished difference Result 433 states and 511 transitions. [2025-01-10 02:35:44,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-01-10 02:35:44,185 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 11 states have internal predecessors, (30), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 42 [2025-01-10 02:35:44,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:35:44,186 INFO L225 Difference]: With dead ends: 433 [2025-01-10 02:35:44,186 INFO L226 Difference]: Without dead ends: 432 [2025-01-10 02:35:44,187 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 28 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2025-01-10 02:35:44,187 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 395 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 1109 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2025-01-10 02:35:44,187 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 1109 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 303 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2025-01-10 02:35:44,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2025-01-10 02:35:44,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 343. [2025-01-10 02:35:44,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 245 states have (on average 1.6571428571428573) internal successors, (406), 303 states have internal predecessors, (406), 30 states have call successors, (30), 10 states have call predecessors, (30), 12 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2025-01-10 02:35:44,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 473 transitions. [2025-01-10 02:35:44,221 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 473 transitions. Word has length 42 [2025-01-10 02:35:44,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:35:44,223 INFO L471 AbstractCegarLoop]: Abstraction has 343 states and 473 transitions. [2025-01-10 02:35:44,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 11 states have internal predecessors, (30), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2025-01-10 02:35:44,223 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 473 transitions. [2025-01-10 02:35:44,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-01-10 02:35:44,225 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:35:44,225 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:35:44,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-01-10 02:35:44,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:44,426 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting func_to_recursive_line_33_to_48_0Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-01-10 02:35:44,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:35:44,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1719805162, now seen corresponding path program 1 times [2025-01-10 02:35:44,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:35:44,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184547983] [2025-01-10 02:35:44,426 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:44,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:35:44,435 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-01-10 02:35:44,460 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-01-10 02:35:44,460 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:44,460 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-10 02:35:44,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [109668371] [2025-01-10 02:35:44,462 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:44,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:44,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:35:44,465 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:35:44,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-01-10 02:35:44,533 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-01-10 02:35:44,558 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-01-10 02:35:44,558 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:44,558 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:35:44,559 INFO L256 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-01-10 02:35:44,561 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:35:44,563 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 [2025-01-10 02:35:44,622 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-01-10 02:35:44,622 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 02:35:44,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:35:44,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184547983] [2025-01-10 02:35:44,623 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-10 02:35:44,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109668371] [2025-01-10 02:35:44,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109668371] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:35:44,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:35:44,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-10 02:35:44,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377692757] [2025-01-10 02:35:44,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:35:44,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-10 02:35:44,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:35:44,623 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-10 02:35:44,624 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-01-10 02:35:44,624 INFO L87 Difference]: Start difference. First operand 343 states and 473 transitions. Second operand has 7 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-01-10 02:35:44,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:35:44,758 INFO L93 Difference]: Finished difference Result 432 states and 509 transitions. [2025-01-10 02:35:44,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-10 02:35:44,759 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 43 [2025-01-10 02:35:44,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:35:44,761 INFO L225 Difference]: With dead ends: 432 [2025-01-10 02:35:44,761 INFO L226 Difference]: Without dead ends: 431 [2025-01-10 02:35:44,761 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2025-01-10 02:35:44,761 INFO L435 NwaCegarLoop]: 139 mSDtfsCounter, 267 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-10 02:35:44,762 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 706 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-10 02:35:44,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2025-01-10 02:35:44,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 343. [2025-01-10 02:35:44,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 245 states have (on average 1.6489795918367347) internal successors, (404), 303 states have internal predecessors, (404), 30 states have call successors, (30), 10 states have call predecessors, (30), 12 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2025-01-10 02:35:44,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 471 transitions. [2025-01-10 02:35:44,778 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 471 transitions. Word has length 43 [2025-01-10 02:35:44,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:35:44,778 INFO L471 AbstractCegarLoop]: Abstraction has 343 states and 471 transitions. [2025-01-10 02:35:44,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-01-10 02:35:44,778 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 471 transitions. [2025-01-10 02:35:44,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2025-01-10 02:35:44,779 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:35:44,779 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:35:44,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-01-10 02:35:44,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:44,980 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting func_to_recursive_line_33_to_48_0Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-01-10 02:35:44,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:35:44,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1774352403, now seen corresponding path program 1 times [2025-01-10 02:35:44,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:35:44,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431056429] [2025-01-10 02:35:44,980 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:44,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:35:44,988 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-01-10 02:35:45,014 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-01-10 02:35:45,014 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:45,014 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-10 02:35:45,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1217895862] [2025-01-10 02:35:45,016 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:45,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:45,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:35:45,019 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:35:45,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-01-10 02:35:45,090 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-01-10 02:35:45,121 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-01-10 02:35:45,121 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:45,121 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:35:45,123 INFO L256 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-01-10 02:35:45,125 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:35:45,137 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 [2025-01-10 02:35:45,161 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 [2025-01-10 02:35:45,298 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 [2025-01-10 02:35:45,309 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-10 02:35:45,309 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 02:35:45,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:35:45,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431056429] [2025-01-10 02:35:45,309 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-10 02:35:45,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217895862] [2025-01-10 02:35:45,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217895862] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:35:45,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:35:45,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-01-10 02:35:45,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553295017] [2025-01-10 02:35:45,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:35:45,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-10 02:35:45,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:35:45,310 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-10 02:35:45,310 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-01-10 02:35:45,310 INFO L87 Difference]: Start difference. First operand 343 states and 471 transitions. Second operand has 11 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-01-10 02:35:45,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:35:45,608 INFO L93 Difference]: Finished difference Result 441 states and 519 transitions. [2025-01-10 02:35:45,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-01-10 02:35:45,609 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 44 [2025-01-10 02:35:45,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:35:45,610 INFO L225 Difference]: With dead ends: 441 [2025-01-10 02:35:45,610 INFO L226 Difference]: Without dead ends: 440 [2025-01-10 02:35:45,611 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2025-01-10 02:35:45,611 INFO L435 NwaCegarLoop]: 132 mSDtfsCounter, 402 mSDsluCounter, 870 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 1002 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-10 02:35:45,611 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 1002 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-10 02:35:45,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2025-01-10 02:35:45,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 343. [2025-01-10 02:35:45,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 245 states have (on average 1.6408163265306122) internal successors, (402), 303 states have internal predecessors, (402), 30 states have call successors, (30), 10 states have call predecessors, (30), 12 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2025-01-10 02:35:45,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 469 transitions. [2025-01-10 02:35:45,626 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 469 transitions. Word has length 44 [2025-01-10 02:35:45,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:35:45,626 INFO L471 AbstractCegarLoop]: Abstraction has 343 states and 469 transitions. [2025-01-10 02:35:45,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-01-10 02:35:45,626 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 469 transitions. [2025-01-10 02:35:45,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-01-10 02:35:45,627 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:35:45,627 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:35:45,634 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-01-10 02:35:45,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-01-10 02:35:45,831 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting func_to_recursive_line_33_to_48_0Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-01-10 02:35:45,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:35:45,831 INFO L85 PathProgramCache]: Analyzing trace with hash 829650424, now seen corresponding path program 1 times [2025-01-10 02:35:45,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:35:45,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10697417] [2025-01-10 02:35:45,832 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:45,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:35:45,839 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-01-10 02:35:45,849 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-01-10 02:35:45,849 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:45,849 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-10 02:35:45,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [227292586] [2025-01-10 02:35:45,851 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:45,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:45,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:35:45,853 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:35:45,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-01-10 02:35:45,924 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-01-10 02:35:45,952 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-01-10 02:35:45,952 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:45,952 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:35:45,954 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-01-10 02:35:45,955 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:35:45,963 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 [2025-01-10 02:35:46,053 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 [2025-01-10 02:35:46,330 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-10 02:35:46,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 25 [2025-01-10 02:35:46,344 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-10 02:35:46,344 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 02:35:46,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:35:46,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10697417] [2025-01-10 02:35:46,345 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-10 02:35:46,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227292586] [2025-01-10 02:35:46,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227292586] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:35:46,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:35:46,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-01-10 02:35:46,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141568462] [2025-01-10 02:35:46,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:35:46,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-01-10 02:35:46,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:35:46,345 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-01-10 02:35:46,346 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2025-01-10 02:35:46,346 INFO L87 Difference]: Start difference. First operand 343 states and 469 transitions. Second operand has 13 states, 10 states have (on average 3.3) internal successors, (33), 11 states have internal predecessors, (33), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-01-10 02:35:46,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:35:46,735 INFO L93 Difference]: Finished difference Result 440 states and 517 transitions. [2025-01-10 02:35:46,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-10 02:35:46,736 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 3.3) internal successors, (33), 11 states have internal predecessors, (33), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 45 [2025-01-10 02:35:46,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:35:46,737 INFO L225 Difference]: With dead ends: 440 [2025-01-10 02:35:46,737 INFO L226 Difference]: Without dead ends: 439 [2025-01-10 02:35:46,738 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2025-01-10 02:35:46,738 INFO L435 NwaCegarLoop]: 132 mSDtfsCounter, 530 mSDsluCounter, 902 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 1034 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-10 02:35:46,738 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [537 Valid, 1034 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-10 02:35:46,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2025-01-10 02:35:46,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 343. [2025-01-10 02:35:46,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 245 states have (on average 1.6326530612244898) internal successors, (400), 303 states have internal predecessors, (400), 30 states have call successors, (30), 10 states have call predecessors, (30), 12 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2025-01-10 02:35:46,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 467 transitions. [2025-01-10 02:35:46,753 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 467 transitions. Word has length 45 [2025-01-10 02:35:46,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:35:46,753 INFO L471 AbstractCegarLoop]: Abstraction has 343 states and 467 transitions. [2025-01-10 02:35:46,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 3.3) internal successors, (33), 11 states have internal predecessors, (33), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-01-10 02:35:46,754 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 467 transitions. [2025-01-10 02:35:46,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2025-01-10 02:35:46,754 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:35:46,754 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:35:46,761 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-01-10 02:35:46,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-01-10 02:35:46,955 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting func_to_recursive_line_33_to_48_0Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-01-10 02:35:46,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:35:46,955 INFO L85 PathProgramCache]: Analyzing trace with hash -50640561, now seen corresponding path program 1 times [2025-01-10 02:35:46,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:35:46,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459208795] [2025-01-10 02:35:46,955 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:46,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:35:46,963 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-01-10 02:35:46,979 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-01-10 02:35:46,979 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:46,979 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-10 02:35:46,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1601994910] [2025-01-10 02:35:46,982 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:46,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:46,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:35:46,984 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:35:46,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-01-10 02:35:47,057 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-01-10 02:35:47,085 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-01-10 02:35:47,085 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:47,085 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:35:47,087 INFO L256 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-01-10 02:35:47,091 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:35:47,095 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 [2025-01-10 02:35:47,130 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 [2025-01-10 02:35:47,134 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 [2025-01-10 02:35:47,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2025-01-10 02:35:47,370 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-01-10 02:35:47,370 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 02:35:47,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:35:47,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459208795] [2025-01-10 02:35:47,370 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-10 02:35:47,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601994910] [2025-01-10 02:35:47,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601994910] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:35:47,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:35:47,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-01-10 02:35:47,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889810616] [2025-01-10 02:35:47,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:35:47,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-10 02:35:47,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:35:47,371 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-10 02:35:47,371 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-01-10 02:35:47,371 INFO L87 Difference]: Start difference. First operand 343 states and 467 transitions. Second operand has 10 states, 8 states have (on average 3.875) internal successors, (31), 9 states have internal predecessors, (31), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-01-10 02:35:47,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:35:47,750 INFO L93 Difference]: Finished difference Result 429 states and 503 transitions. [2025-01-10 02:35:47,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-10 02:35:47,750 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.875) internal successors, (31), 9 states have internal predecessors, (31), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 46 [2025-01-10 02:35:47,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:35:47,752 INFO L225 Difference]: With dead ends: 429 [2025-01-10 02:35:47,752 INFO L226 Difference]: Without dead ends: 428 [2025-01-10 02:35:47,752 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 6 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2025-01-10 02:35:47,752 INFO L435 NwaCegarLoop]: 128 mSDtfsCounter, 351 mSDsluCounter, 749 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-10 02:35:47,753 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 877 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-10 02:35:47,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2025-01-10 02:35:47,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 343. [2025-01-10 02:35:47,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 245 states have (on average 1.6244897959183673) internal successors, (398), 303 states have internal predecessors, (398), 30 states have call successors, (30), 10 states have call predecessors, (30), 12 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2025-01-10 02:35:47,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 465 transitions. [2025-01-10 02:35:47,771 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 465 transitions. Word has length 46 [2025-01-10 02:35:47,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:35:47,772 INFO L471 AbstractCegarLoop]: Abstraction has 343 states and 465 transitions. [2025-01-10 02:35:47,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.875) internal successors, (31), 9 states have internal predecessors, (31), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-01-10 02:35:47,772 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 465 transitions. [2025-01-10 02:35:47,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2025-01-10 02:35:47,772 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:35:47,772 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:35:47,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-01-10 02:35:47,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:47,977 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting func_to_recursive_line_33_to_48_0Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-01-10 02:35:47,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:35:47,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1569857318, now seen corresponding path program 1 times [2025-01-10 02:35:47,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:35:47,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493634261] [2025-01-10 02:35:47,978 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:47,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:35:47,986 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 47 statements into 1 equivalence classes. [2025-01-10 02:35:48,004 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-01-10 02:35:48,005 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:48,005 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-10 02:35:48,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1397130551] [2025-01-10 02:35:48,006 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:48,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:48,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:35:48,010 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:35:48,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-01-10 02:35:48,082 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 47 statements into 1 equivalence classes. [2025-01-10 02:35:48,107 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-01-10 02:35:48,107 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:48,107 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:35:48,109 INFO L256 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 58 conjuncts are in the unsatisfiable core [2025-01-10 02:35:48,111 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:35:48,115 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 [2025-01-10 02:35:48,155 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 [2025-01-10 02:35:48,160 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 [2025-01-10 02:35:48,166 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 11 [2025-01-10 02:35:48,444 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 11 treesize of output 7 [2025-01-10 02:35:48,469 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 [2025-01-10 02:35:48,485 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-01-10 02:35:48,485 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 02:35:48,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:35:48,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493634261] [2025-01-10 02:35:48,485 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-10 02:35:48,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397130551] [2025-01-10 02:35:48,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1397130551] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:35:48,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:35:48,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-01-10 02:35:48,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808882740] [2025-01-10 02:35:48,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:35:48,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-10 02:35:48,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:35:48,486 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-10 02:35:48,486 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-01-10 02:35:48,486 INFO L87 Difference]: Start difference. First operand 343 states and 465 transitions. Second operand has 10 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-01-10 02:35:48,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:35:48,888 INFO L93 Difference]: Finished difference Result 422 states and 493 transitions. [2025-01-10 02:35:48,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-10 02:35:48,889 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 47 [2025-01-10 02:35:48,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:35:48,890 INFO L225 Difference]: With dead ends: 422 [2025-01-10 02:35:48,890 INFO L226 Difference]: Without dead ends: 421 [2025-01-10 02:35:48,890 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 32 SyntacticMatches, 6 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2025-01-10 02:35:48,891 INFO L435 NwaCegarLoop]: 123 mSDtfsCounter, 513 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-10 02:35:48,891 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 816 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-10 02:35:48,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2025-01-10 02:35:48,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 343. [2025-01-10 02:35:48,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 245 states have (on average 1.616326530612245) internal successors, (396), 303 states have internal predecessors, (396), 30 states have call successors, (30), 10 states have call predecessors, (30), 12 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2025-01-10 02:35:48,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 463 transitions. [2025-01-10 02:35:48,910 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 463 transitions. Word has length 47 [2025-01-10 02:35:48,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:35:48,910 INFO L471 AbstractCegarLoop]: Abstraction has 343 states and 463 transitions. [2025-01-10 02:35:48,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-01-10 02:35:48,910 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 463 transitions. [2025-01-10 02:35:48,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-01-10 02:35:48,911 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:35:48,911 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:35:48,917 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-01-10 02:35:49,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-01-10 02:35:49,112 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting func_to_recursive_line_33_to_48_0Err24ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-01-10 02:35:49,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:35:49,112 INFO L85 PathProgramCache]: Analyzing trace with hash -110007538, now seen corresponding path program 1 times [2025-01-10 02:35:49,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:35:49,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749701585] [2025-01-10 02:35:49,112 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:49,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:35:49,120 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-01-10 02:35:49,127 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-01-10 02:35:49,127 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:49,127 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:35:49,730 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-01-10 02:35:49,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:35:49,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749701585] [2025-01-10 02:35:49,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749701585] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:35:49,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:35:49,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 02:35:49,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701690033] [2025-01-10 02:35:49,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:35:49,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 02:35:49,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:35:49,731 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 02:35:49,731 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 02:35:49,731 INFO L87 Difference]: Start difference. First operand 343 states and 463 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-01-10 02:35:49,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:35:49,765 INFO L93 Difference]: Finished difference Result 343 states and 463 transitions. [2025-01-10 02:35:49,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 02:35:49,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 56 [2025-01-10 02:35:49,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:35:49,767 INFO L225 Difference]: With dead ends: 343 [2025-01-10 02:35:49,767 INFO L226 Difference]: Without dead ends: 342 [2025-01-10 02:35:49,768 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 02:35:49,768 INFO L435 NwaCegarLoop]: 149 mSDtfsCounter, 1 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-10 02:35:49,768 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 437 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-10 02:35:49,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2025-01-10 02:35:49,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 342. [2025-01-10 02:35:49,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 245 states have (on average 1.6081632653061224) internal successors, (394), 302 states have internal predecessors, (394), 30 states have call successors, (30), 10 states have call predecessors, (30), 12 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2025-01-10 02:35:49,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 461 transitions. [2025-01-10 02:35:49,786 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 461 transitions. Word has length 56 [2025-01-10 02:35:49,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:35:49,786 INFO L471 AbstractCegarLoop]: Abstraction has 342 states and 461 transitions. [2025-01-10 02:35:49,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-01-10 02:35:49,786 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 461 transitions. [2025-01-10 02:35:49,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-01-10 02:35:49,787 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:35:49,787 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:35:49,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-01-10 02:35:49,787 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting func_to_recursive_line_33_to_48_0Err18ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-01-10 02:35:49,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:35:49,787 INFO L85 PathProgramCache]: Analyzing trace with hash -110007986, now seen corresponding path program 1 times [2025-01-10 02:35:49,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:35:49,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434801019] [2025-01-10 02:35:49,788 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:49,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:35:49,796 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-01-10 02:35:49,804 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-01-10 02:35:49,805 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:49,805 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:35:50,153 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-01-10 02:35:50,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:35:50,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434801019] [2025-01-10 02:35:50,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434801019] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:35:50,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:35:50,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 02:35:50,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88148270] [2025-01-10 02:35:50,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:35:50,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 02:35:50,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:35:50,154 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 02:35:50,154 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 02:35:50,154 INFO L87 Difference]: Start difference. First operand 342 states and 461 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-01-10 02:35:50,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:35:50,199 INFO L93 Difference]: Finished difference Result 342 states and 461 transitions. [2025-01-10 02:35:50,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 02:35:50,200 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 56 [2025-01-10 02:35:50,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:35:50,201 INFO L225 Difference]: With dead ends: 342 [2025-01-10 02:35:50,201 INFO L226 Difference]: Without dead ends: 341 [2025-01-10 02:35:50,202 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 02:35:50,202 INFO L435 NwaCegarLoop]: 148 mSDtfsCounter, 1 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-10 02:35:50,202 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 434 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-10 02:35:50,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2025-01-10 02:35:50,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2025-01-10 02:35:50,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 245 states have (on average 1.6) internal successors, (392), 301 states have internal predecessors, (392), 30 states have call successors, (30), 10 states have call predecessors, (30), 12 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2025-01-10 02:35:50,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 459 transitions. [2025-01-10 02:35:50,230 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 459 transitions. Word has length 56 [2025-01-10 02:35:50,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:35:50,230 INFO L471 AbstractCegarLoop]: Abstraction has 341 states and 459 transitions. [2025-01-10 02:35:50,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-01-10 02:35:50,230 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 459 transitions. [2025-01-10 02:35:50,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2025-01-10 02:35:50,231 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:35:50,231 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:35:50,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-01-10 02:35:50,231 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting func_to_recursive_line_33_to_48_0Err25ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-01-10 02:35:50,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:35:50,233 INFO L85 PathProgramCache]: Analyzing trace with hash 884733718, now seen corresponding path program 1 times [2025-01-10 02:35:50,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:35:50,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257487183] [2025-01-10 02:35:50,233 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:50,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:35:50,245 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 57 statements into 1 equivalence classes. [2025-01-10 02:35:50,251 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 57 of 57 statements. [2025-01-10 02:35:50,251 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:50,252 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:35:50,564 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-01-10 02:35:50,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:35:50,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257487183] [2025-01-10 02:35:50,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257487183] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:35:50,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:35:50,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-10 02:35:50,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133052009] [2025-01-10 02:35:50,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:35:50,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-10 02:35:50,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:35:50,565 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-10 02:35:50,565 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-01-10 02:35:50,565 INFO L87 Difference]: Start difference. First operand 341 states and 459 transitions. Second operand has 7 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-10 02:35:50,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:35:50,711 INFO L93 Difference]: Finished difference Result 347 states and 465 transitions. [2025-01-10 02:35:50,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-10 02:35:50,711 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 57 [2025-01-10 02:35:50,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:35:50,713 INFO L225 Difference]: With dead ends: 347 [2025-01-10 02:35:50,713 INFO L226 Difference]: Without dead ends: 346 [2025-01-10 02:35:50,713 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2025-01-10 02:35:50,713 INFO L435 NwaCegarLoop]: 136 mSDtfsCounter, 79 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-10 02:35:50,713 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 743 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-10 02:35:50,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2025-01-10 02:35:50,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 343. [2025-01-10 02:35:50,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 247 states have (on average 1.5951417004048583) internal successors, (394), 303 states have internal predecessors, (394), 30 states have call successors, (30), 10 states have call predecessors, (30), 12 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2025-01-10 02:35:50,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 461 transitions. [2025-01-10 02:35:50,743 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 461 transitions. Word has length 57 [2025-01-10 02:35:50,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:35:50,744 INFO L471 AbstractCegarLoop]: Abstraction has 343 states and 461 transitions. [2025-01-10 02:35:50,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-10 02:35:50,744 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 461 transitions. [2025-01-10 02:35:50,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2025-01-10 02:35:50,744 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:35:50,744 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:35:50,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-01-10 02:35:50,745 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting func_to_recursive_line_33_to_48_0Err19ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-01-10 02:35:50,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:35:50,745 INFO L85 PathProgramCache]: Analyzing trace with hash 884719816, now seen corresponding path program 1 times [2025-01-10 02:35:50,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:35:50,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942909163] [2025-01-10 02:35:50,745 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:50,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:35:50,755 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 57 statements into 1 equivalence classes. [2025-01-10 02:35:50,761 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 57 of 57 statements. [2025-01-10 02:35:50,761 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:50,761 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:35:51,040 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-01-10 02:35:51,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:35:51,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942909163] [2025-01-10 02:35:51,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942909163] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:35:51,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:35:51,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-10 02:35:51,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961362326] [2025-01-10 02:35:51,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:35:51,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-10 02:35:51,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:35:51,042 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-10 02:35:51,042 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-01-10 02:35:51,042 INFO L87 Difference]: Start difference. First operand 343 states and 461 transitions. Second operand has 7 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-10 02:35:51,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:35:51,175 INFO L93 Difference]: Finished difference Result 346 states and 464 transitions. [2025-01-10 02:35:51,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-10 02:35:51,175 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 57 [2025-01-10 02:35:51,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:35:51,177 INFO L225 Difference]: With dead ends: 346 [2025-01-10 02:35:51,177 INFO L226 Difference]: Without dead ends: 345 [2025-01-10 02:35:51,177 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2025-01-10 02:35:51,177 INFO L435 NwaCegarLoop]: 136 mSDtfsCounter, 77 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-10 02:35:51,177 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 743 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-10 02:35:51,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2025-01-10 02:35:51,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2025-01-10 02:35:51,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 249 states have (on average 1.5903614457831325) internal successors, (396), 305 states have internal predecessors, (396), 30 states have call successors, (30), 10 states have call predecessors, (30), 12 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2025-01-10 02:35:51,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 463 transitions. [2025-01-10 02:35:51,195 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 463 transitions. Word has length 57 [2025-01-10 02:35:51,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:35:51,195 INFO L471 AbstractCegarLoop]: Abstraction has 345 states and 463 transitions. [2025-01-10 02:35:51,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-10 02:35:51,195 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 463 transitions. [2025-01-10 02:35:51,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-01-10 02:35:51,197 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:35:51,197 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:35:51,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-01-10 02:35:51,197 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-01-10 02:35:51,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:35:51,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1656672535, now seen corresponding path program 1 times [2025-01-10 02:35:51,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:35:51,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012075327] [2025-01-10 02:35:51,198 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:51,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:35:51,206 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-01-10 02:35:51,210 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-01-10 02:35:51,210 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:51,210 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:35:51,466 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-01-10 02:35:51,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:35:51,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012075327] [2025-01-10 02:35:51,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012075327] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:35:51,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:35:51,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-01-10 02:35:51,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870439453] [2025-01-10 02:35:51,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:35:51,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-10 02:35:51,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:35:51,468 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-10 02:35:51,468 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-01-10 02:35:51,468 INFO L87 Difference]: Start difference. First operand 345 states and 463 transitions. Second operand has 8 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2025-01-10 02:35:51,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:35:51,669 INFO L93 Difference]: Finished difference Result 349 states and 469 transitions. [2025-01-10 02:35:51,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-10 02:35:51,670 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 58 [2025-01-10 02:35:51,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:35:51,671 INFO L225 Difference]: With dead ends: 349 [2025-01-10 02:35:51,671 INFO L226 Difference]: Without dead ends: 348 [2025-01-10 02:35:51,671 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-01-10 02:35:51,672 INFO L435 NwaCegarLoop]: 130 mSDtfsCounter, 45 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-10 02:35:51,672 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 650 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-10 02:35:51,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2025-01-10 02:35:51,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 348. [2025-01-10 02:35:51,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 250 states have (on average 1.58) internal successors, (395), 307 states have internal predecessors, (395), 31 states have call successors, (31), 10 states have call predecessors, (31), 13 states have return successors, (41), 31 states have call predecessors, (41), 31 states have call successors, (41) [2025-01-10 02:35:51,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 467 transitions. [2025-01-10 02:35:51,690 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 467 transitions. Word has length 58 [2025-01-10 02:35:51,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:35:51,690 INFO L471 AbstractCegarLoop]: Abstraction has 348 states and 467 transitions. [2025-01-10 02:35:51,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2025-01-10 02:35:51,691 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 467 transitions. [2025-01-10 02:35:51,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-01-10 02:35:51,691 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:35:51,691 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:35:51,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-01-10 02:35:51,691 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting func_to_recursive_line_33_to_48_0Err26ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-01-10 02:35:51,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:35:51,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1656941584, now seen corresponding path program 1 times [2025-01-10 02:35:51,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:35:51,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940887961] [2025-01-10 02:35:51,692 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:51,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:35:51,700 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-01-10 02:35:51,705 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-01-10 02:35:51,705 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:51,705 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:35:51,905 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-01-10 02:35:51,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:35:51,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940887961] [2025-01-10 02:35:51,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940887961] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:35:51,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:35:51,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-10 02:35:51,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76521459] [2025-01-10 02:35:51,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:35:51,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 02:35:51,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:35:51,907 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 02:35:51,907 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-10 02:35:51,907 INFO L87 Difference]: Start difference. First operand 348 states and 467 transitions. Second operand has 6 states, 4 states have (on average 9.5) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-10 02:35:52,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:35:52,022 INFO L93 Difference]: Finished difference Result 367 states and 475 transitions. [2025-01-10 02:35:52,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 02:35:52,022 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 9.5) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 58 [2025-01-10 02:35:52,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:35:52,023 INFO L225 Difference]: With dead ends: 367 [2025-01-10 02:35:52,023 INFO L226 Difference]: Without dead ends: 365 [2025-01-10 02:35:52,024 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-01-10 02:35:52,024 INFO L435 NwaCegarLoop]: 139 mSDtfsCounter, 72 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-10 02:35:52,024 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 662 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-10 02:35:52,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2025-01-10 02:35:52,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 350. [2025-01-10 02:35:52,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 252 states have (on average 1.5753968253968254) internal successors, (397), 309 states have internal predecessors, (397), 31 states have call successors, (31), 10 states have call predecessors, (31), 13 states have return successors, (41), 31 states have call predecessors, (41), 31 states have call successors, (41) [2025-01-10 02:35:52,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 469 transitions. [2025-01-10 02:35:52,042 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 469 transitions. Word has length 58 [2025-01-10 02:35:52,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:35:52,042 INFO L471 AbstractCegarLoop]: Abstraction has 350 states and 469 transitions. [2025-01-10 02:35:52,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 9.5) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-10 02:35:52,042 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 469 transitions. [2025-01-10 02:35:52,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-01-10 02:35:52,043 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:35:52,043 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:35:52,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-01-10 02:35:52,043 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting func_to_recursive_line_33_to_48_0Err20ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-01-10 02:35:52,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:35:52,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1656510608, now seen corresponding path program 1 times [2025-01-10 02:35:52,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:35:52,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498732760] [2025-01-10 02:35:52,044 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:52,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:35:52,051 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-01-10 02:35:52,055 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-01-10 02:35:52,055 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:52,056 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:35:52,251 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-01-10 02:35:52,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:35:52,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498732760] [2025-01-10 02:35:52,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498732760] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:35:52,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:35:52,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-10 02:35:52,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30791463] [2025-01-10 02:35:52,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:35:52,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 02:35:52,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:35:52,252 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 02:35:52,252 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-10 02:35:52,253 INFO L87 Difference]: Start difference. First operand 350 states and 469 transitions. Second operand has 6 states, 4 states have (on average 9.5) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-10 02:35:52,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:35:52,396 INFO L93 Difference]: Finished difference Result 385 states and 479 transitions. [2025-01-10 02:35:52,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-10 02:35:52,396 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 9.5) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 58 [2025-01-10 02:35:52,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:35:52,398 INFO L225 Difference]: With dead ends: 385 [2025-01-10 02:35:52,398 INFO L226 Difference]: Without dead ends: 383 [2025-01-10 02:35:52,398 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-01-10 02:35:52,398 INFO L435 NwaCegarLoop]: 148 mSDtfsCounter, 105 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-10 02:35:52,399 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 688 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-10 02:35:52,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2025-01-10 02:35:52,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 350. [2025-01-10 02:35:52,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 252 states have (on average 1.5674603174603174) internal successors, (395), 309 states have internal predecessors, (395), 31 states have call successors, (31), 10 states have call predecessors, (31), 13 states have return successors, (41), 31 states have call predecessors, (41), 31 states have call successors, (41) [2025-01-10 02:35:52,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 467 transitions. [2025-01-10 02:35:52,419 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 467 transitions. Word has length 58 [2025-01-10 02:35:52,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:35:52,419 INFO L471 AbstractCegarLoop]: Abstraction has 350 states and 467 transitions. [2025-01-10 02:35:52,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 9.5) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-10 02:35:52,420 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 467 transitions. [2025-01-10 02:35:52,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-01-10 02:35:52,420 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:35:52,420 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:35:52,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-01-10 02:35:52,420 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-01-10 02:35:52,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:35:52,421 INFO L85 PathProgramCache]: Analyzing trace with hash -182758832, now seen corresponding path program 1 times [2025-01-10 02:35:52,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:35:52,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764135072] [2025-01-10 02:35:52,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:52,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:35:52,430 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-01-10 02:35:52,435 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-01-10 02:35:52,435 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:52,435 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:35:52,736 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-01-10 02:35:52,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:35:52,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764135072] [2025-01-10 02:35:52,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764135072] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:35:52,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:35:52,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-01-10 02:35:52,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917565364] [2025-01-10 02:35:52,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:35:52,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-10 02:35:52,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:35:52,737 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-10 02:35:52,737 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-01-10 02:35:52,737 INFO L87 Difference]: Start difference. First operand 350 states and 467 transitions. Second operand has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2025-01-10 02:35:52,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:35:52,939 INFO L93 Difference]: Finished difference Result 351 states and 467 transitions. [2025-01-10 02:35:52,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-10 02:35:52,939 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 59 [2025-01-10 02:35:52,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:35:52,941 INFO L225 Difference]: With dead ends: 351 [2025-01-10 02:35:52,941 INFO L226 Difference]: Without dead ends: 350 [2025-01-10 02:35:52,941 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-01-10 02:35:52,942 INFO L435 NwaCegarLoop]: 131 mSDtfsCounter, 44 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-10 02:35:52,942 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 717 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-10 02:35:52,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2025-01-10 02:35:52,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 350. [2025-01-10 02:35:52,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 252 states have (on average 1.5595238095238095) internal successors, (393), 309 states have internal predecessors, (393), 31 states have call successors, (31), 10 states have call predecessors, (31), 13 states have return successors, (41), 31 states have call predecessors, (41), 31 states have call successors, (41) [2025-01-10 02:35:52,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 465 transitions. [2025-01-10 02:35:52,960 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 465 transitions. Word has length 59 [2025-01-10 02:35:52,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:35:52,960 INFO L471 AbstractCegarLoop]: Abstraction has 350 states and 465 transitions. [2025-01-10 02:35:52,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2025-01-10 02:35:52,960 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 465 transitions. [2025-01-10 02:35:52,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-01-10 02:35:52,960 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:35:52,960 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:35:52,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2025-01-10 02:35:52,961 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting func_to_recursive_line_33_to_48_0Err28ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-01-10 02:35:52,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:35:52,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1112001262, now seen corresponding path program 1 times [2025-01-10 02:35:52,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:35:52,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411061873] [2025-01-10 02:35:52,961 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:52,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:35:52,973 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-01-10 02:35:52,977 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-01-10 02:35:52,977 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:52,977 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:35:53,171 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-01-10 02:35:53,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:35:53,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411061873] [2025-01-10 02:35:53,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411061873] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:35:53,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:35:53,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-10 02:35:53,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742606960] [2025-01-10 02:35:53,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:35:53,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 02:35:53,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:35:53,173 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 02:35:53,173 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-10 02:35:53,173 INFO L87 Difference]: Start difference. First operand 350 states and 465 transitions. Second operand has 6 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-10 02:35:53,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:35:53,310 INFO L93 Difference]: Finished difference Result 392 states and 485 transitions. [2025-01-10 02:35:53,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-10 02:35:53,310 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 60 [2025-01-10 02:35:53,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:35:53,312 INFO L225 Difference]: With dead ends: 392 [2025-01-10 02:35:53,312 INFO L226 Difference]: Without dead ends: 390 [2025-01-10 02:35:53,312 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-01-10 02:35:53,312 INFO L435 NwaCegarLoop]: 139 mSDtfsCounter, 110 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-10 02:35:53,312 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 657 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-10 02:35:53,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2025-01-10 02:35:53,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 350. [2025-01-10 02:35:53,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 252 states have (on average 1.5515873015873016) internal successors, (391), 309 states have internal predecessors, (391), 31 states have call successors, (31), 10 states have call predecessors, (31), 13 states have return successors, (41), 31 states have call predecessors, (41), 31 states have call successors, (41) [2025-01-10 02:35:53,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 463 transitions. [2025-01-10 02:35:53,334 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 463 transitions. Word has length 60 [2025-01-10 02:35:53,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:35:53,334 INFO L471 AbstractCegarLoop]: Abstraction has 350 states and 463 transitions. [2025-01-10 02:35:53,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-10 02:35:53,334 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 463 transitions. [2025-01-10 02:35:53,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-01-10 02:35:53,334 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:35:53,334 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:35:53,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-01-10 02:35:53,335 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting func_to_recursive_line_33_to_48_0Err22ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-01-10 02:35:53,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:35:53,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1526169646, now seen corresponding path program 1 times [2025-01-10 02:35:53,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:35:53,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806121137] [2025-01-10 02:35:53,336 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:53,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:35:53,347 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-01-10 02:35:53,351 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-01-10 02:35:53,351 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:53,351 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:35:53,515 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-01-10 02:35:53,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:35:53,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806121137] [2025-01-10 02:35:53,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806121137] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:35:53,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:35:53,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-10 02:35:53,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121153047] [2025-01-10 02:35:53,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:35:53,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 02:35:53,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:35:53,516 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 02:35:53,516 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-10 02:35:53,516 INFO L87 Difference]: Start difference. First operand 350 states and 463 transitions. Second operand has 6 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-10 02:35:53,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:35:53,636 INFO L93 Difference]: Finished difference Result 366 states and 471 transitions. [2025-01-10 02:35:53,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 02:35:53,636 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 60 [2025-01-10 02:35:53,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:35:53,638 INFO L225 Difference]: With dead ends: 366 [2025-01-10 02:35:53,638 INFO L226 Difference]: Without dead ends: 364 [2025-01-10 02:35:53,638 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-01-10 02:35:53,639 INFO L435 NwaCegarLoop]: 140 mSDtfsCounter, 69 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-10 02:35:53,639 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 664 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-10 02:35:53,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2025-01-10 02:35:53,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 354. [2025-01-10 02:35:53,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 256 states have (on average 1.54296875) internal successors, (395), 313 states have internal predecessors, (395), 31 states have call successors, (31), 10 states have call predecessors, (31), 13 states have return successors, (41), 31 states have call predecessors, (41), 31 states have call successors, (41) [2025-01-10 02:35:53,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 467 transitions. [2025-01-10 02:35:53,659 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 467 transitions. Word has length 60 [2025-01-10 02:35:53,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:35:53,659 INFO L471 AbstractCegarLoop]: Abstraction has 354 states and 467 transitions. [2025-01-10 02:35:53,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-10 02:35:53,659 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 467 transitions. [2025-01-10 02:35:53,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-01-10 02:35:53,660 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:35:53,660 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:35:53,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2025-01-10 02:35:53,660 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-01-10 02:35:53,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:35:53,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1423222683, now seen corresponding path program 1 times [2025-01-10 02:35:53,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:35:53,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270195612] [2025-01-10 02:35:53,661 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:53,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:35:53,670 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-01-10 02:35:53,698 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-01-10 02:35:53,699 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:53,699 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-10 02:35:53,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1199853872] [2025-01-10 02:35:53,700 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:53,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:53,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:35:53,702 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:35:53,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-01-10 02:35:53,804 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-01-10 02:35:53,846 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-01-10 02:35:53,846 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:53,846 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:35:53,848 INFO L256 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 65 conjuncts are in the unsatisfiable core [2025-01-10 02:35:53,851 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:35:53,856 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 [2025-01-10 02:35:53,859 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 [2025-01-10 02:35:53,863 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 [2025-01-10 02:35:54,154 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 [2025-01-10 02:35:54,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2025-01-10 02:35:54,205 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 [2025-01-10 02:35:54,207 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 [2025-01-10 02:35:54,217 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-01-10 02:35:54,217 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:35:54,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:35:54,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270195612] [2025-01-10 02:35:54,451 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-10 02:35:54,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199853872] [2025-01-10 02:35:54,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199853872] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:35:54,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-01-10 02:35:54,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2025-01-10 02:35:54,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917372318] [2025-01-10 02:35:54,451 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-01-10 02:35:54,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-10 02:35:54,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:35:54,451 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-10 02:35:54,451 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2025-01-10 02:35:54,452 INFO L87 Difference]: Start difference. First operand 354 states and 467 transitions. Second operand has 10 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-10 02:35:58,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 02:35:58,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:35:58,734 INFO L93 Difference]: Finished difference Result 450 states and 554 transitions. [2025-01-10 02:35:58,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-10 02:35:58,735 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 65 [2025-01-10 02:35:58,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:35:58,736 INFO L225 Difference]: With dead ends: 450 [2025-01-10 02:35:58,736 INFO L226 Difference]: Without dead ends: 449 [2025-01-10 02:35:58,736 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 60 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=284, Unknown=0, NotChecked=0, Total=380 [2025-01-10 02:35:58,736 INFO L435 NwaCegarLoop]: 123 mSDtfsCounter, 291 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 20 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2025-01-10 02:35:58,737 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 708 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 197 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2025-01-10 02:35:58,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2025-01-10 02:35:58,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 388. [2025-01-10 02:35:58,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 284 states have (on average 1.5316901408450705) internal successors, (435), 342 states have internal predecessors, (435), 35 states have call successors, (35), 11 states have call predecessors, (35), 15 states have return successors, (49), 35 states have call predecessors, (49), 35 states have call successors, (49) [2025-01-10 02:35:58,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 519 transitions. [2025-01-10 02:35:58,761 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 519 transitions. Word has length 65 [2025-01-10 02:35:58,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:35:58,761 INFO L471 AbstractCegarLoop]: Abstraction has 388 states and 519 transitions. [2025-01-10 02:35:58,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-10 02:35:58,761 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 519 transitions. [2025-01-10 02:35:58,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-01-10 02:35:58,762 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:35:58,762 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:35:58,769 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-01-10 02:35:58,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-01-10 02:35:58,966 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-01-10 02:35:58,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:35:58,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1666612375, now seen corresponding path program 1 times [2025-01-10 02:35:58,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:35:58,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205307286] [2025-01-10 02:35:58,966 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:58,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:35:58,975 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-01-10 02:35:58,992 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-01-10 02:35:58,993 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:58,993 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-10 02:35:58,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1702934342] [2025-01-10 02:35:58,994 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:58,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:58,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:35:58,996 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:35:58,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-01-10 02:35:59,093 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-01-10 02:35:59,136 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-01-10 02:35:59,136 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:59,136 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:35:59,143 INFO L256 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 66 conjuncts are in the unsatisfiable core [2025-01-10 02:35:59,145 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:35:59,151 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 [2025-01-10 02:35:59,154 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 [2025-01-10 02:35:59,156 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 [2025-01-10 02:35:59,411 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 [2025-01-10 02:35:59,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 11 [2025-01-10 02:35:59,461 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 [2025-01-10 02:35:59,470 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-01-10 02:35:59,470 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:35:59,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:35:59,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205307286] [2025-01-10 02:35:59,698 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-10 02:35:59,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702934342] [2025-01-10 02:35:59,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702934342] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:35:59,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-01-10 02:35:59,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2025-01-10 02:35:59,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838886399] [2025-01-10 02:35:59,698 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-01-10 02:35:59,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-10 02:35:59,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:35:59,698 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-10 02:35:59,699 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2025-01-10 02:35:59,699 INFO L87 Difference]: Start difference. First operand 388 states and 519 transitions. Second operand has 10 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-10 02:35:59,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:35:59,961 INFO L93 Difference]: Finished difference Result 457 states and 549 transitions. [2025-01-10 02:35:59,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-10 02:35:59,962 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 65 [2025-01-10 02:35:59,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:35:59,963 INFO L225 Difference]: With dead ends: 457 [2025-01-10 02:35:59,963 INFO L226 Difference]: Without dead ends: 456 [2025-01-10 02:35:59,964 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 59 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2025-01-10 02:35:59,964 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 281 mSDsluCounter, 782 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-10 02:35:59,964 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 916 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-10 02:35:59,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2025-01-10 02:35:59,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 388. [2025-01-10 02:35:59,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 284 states have (on average 1.528169014084507) internal successors, (434), 342 states have internal predecessors, (434), 35 states have call successors, (35), 11 states have call predecessors, (35), 15 states have return successors, (49), 35 states have call predecessors, (49), 35 states have call successors, (49) [2025-01-10 02:35:59,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 518 transitions. [2025-01-10 02:35:59,994 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 518 transitions. Word has length 65 [2025-01-10 02:35:59,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:35:59,994 INFO L471 AbstractCegarLoop]: Abstraction has 388 states and 518 transitions. [2025-01-10 02:35:59,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-10 02:35:59,994 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 518 transitions. [2025-01-10 02:35:59,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-01-10 02:35:59,995 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:35:59,995 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:36:00,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2025-01-10 02:36:00,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:36:00,195 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-01-10 02:36:00,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:36:00,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1067430488, now seen corresponding path program 1 times [2025-01-10 02:36:00,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:36:00,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294413889] [2025-01-10 02:36:00,196 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:36:00,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:36:00,203 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-01-10 02:36:00,213 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-01-10 02:36:00,213 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:36:00,213 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-10 02:36:00,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [681048456] [2025-01-10 02:36:00,214 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:36:00,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:36:00,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:36:00,216 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:36:00,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-01-10 02:36:00,310 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-01-10 02:36:00,342 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-01-10 02:36:00,342 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:36:00,342 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:36:00,343 INFO L256 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-10 02:36:00,345 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:36:00,379 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 [2025-01-10 02:36:00,550 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 [2025-01-10 02:36:00,553 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 [2025-01-10 02:36:00,561 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-10 02:36:00,562 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:36:00,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:36:00,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294413889] [2025-01-10 02:36:00,607 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-10 02:36:00,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681048456] [2025-01-10 02:36:00,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681048456] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:36:00,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-01-10 02:36:00,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2025-01-10 02:36:00,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684039594] [2025-01-10 02:36:00,607 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-01-10 02:36:00,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-10 02:36:00,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:36:00,608 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-10 02:36:00,608 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2025-01-10 02:36:00,608 INFO L87 Difference]: Start difference. First operand 388 states and 518 transitions. Second operand has 11 states, 9 states have (on average 5.111111111111111) internal successors, (46), 11 states have internal predecessors, (46), 4 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2025-01-10 02:36:04,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 02:36:08,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 02:36:12,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 02:36:16,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 02:36:20,922 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 02:36:24,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 02:36:24,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:36:24,994 INFO L93 Difference]: Finished difference Result 449 states and 548 transitions. [2025-01-10 02:36:24,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-10 02:36:24,994 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 5.111111111111111) internal successors, (46), 11 states have internal predecessors, (46), 4 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 66 [2025-01-10 02:36:24,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:36:24,996 INFO L225 Difference]: With dead ends: 449 [2025-01-10 02:36:24,996 INFO L226 Difference]: Without dead ends: 448 [2025-01-10 02:36:24,996 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 48 SyntacticMatches, 9 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2025-01-10 02:36:24,997 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 473 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 47 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.3s IncrementalHoareTripleChecker+Time [2025-01-10 02:36:24,997 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 822 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 293 Invalid, 6 Unknown, 0 Unchecked, 24.3s Time] [2025-01-10 02:36:24,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2025-01-10 02:36:25,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 392. [2025-01-10 02:36:25,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 286 states have (on average 1.5174825174825175) internal successors, (434), 344 states have internal predecessors, (434), 35 states have call successors, (35), 11 states have call predecessors, (35), 17 states have return successors, (54), 36 states have call predecessors, (54), 35 states have call successors, (54) [2025-01-10 02:36:25,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 523 transitions. [2025-01-10 02:36:25,021 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 523 transitions. Word has length 66 [2025-01-10 02:36:25,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:36:25,022 INFO L471 AbstractCegarLoop]: Abstraction has 392 states and 523 transitions. [2025-01-10 02:36:25,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 5.111111111111111) internal successors, (46), 11 states have internal predecessors, (46), 4 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2025-01-10 02:36:25,023 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 523 transitions. [2025-01-10 02:36:25,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-01-10 02:36:25,023 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:36:25,023 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:36:25,030 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-01-10 02:36:25,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:36:25,228 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-01-10 02:36:25,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:36:25,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1170230176, now seen corresponding path program 1 times [2025-01-10 02:36:25,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:36:25,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179231477] [2025-01-10 02:36:25,228 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:36:25,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:36:25,238 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-01-10 02:36:25,249 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-01-10 02:36:25,249 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:36:25,249 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-10 02:36:25,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [794243785] [2025-01-10 02:36:25,251 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:36:25,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:36:25,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:36:25,253 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:36:25,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-01-10 02:36:25,361 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-01-10 02:36:25,416 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-01-10 02:36:25,416 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:36:25,416 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:36:25,419 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 71 conjuncts are in the unsatisfiable core [2025-01-10 02:36:25,421 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:36:25,425 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-10 02:36:25,428 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 [2025-01-10 02:36:25,432 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 [2025-01-10 02:36:25,690 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 [2025-01-10 02:36:25,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2025-01-10 02:36:25,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2025-01-10 02:36:25,758 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-01-10 02:36:25,758 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:36:26,467 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-01-10 02:36:26,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:36:26,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179231477] [2025-01-10 02:36:26,467 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-10 02:36:26,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794243785] [2025-01-10 02:36:26,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794243785] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:36:26,467 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-10 02:36:26,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2025-01-10 02:36:26,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905858591] [2025-01-10 02:36:26,468 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-10 02:36:26,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-10 02:36:26,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:36:26,468 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-10 02:36:26,468 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2025-01-10 02:36:26,468 INFO L87 Difference]: Start difference. First operand 392 states and 523 transitions. Second operand has 17 states, 14 states have (on average 6.0) internal successors, (84), 13 states have internal predecessors, (84), 7 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-01-10 02:36:29,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:36:29,470 INFO L93 Difference]: Finished difference Result 623 states and 761 transitions. [2025-01-10 02:36:29,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-01-10 02:36:29,471 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 6.0) internal successors, (84), 13 states have internal predecessors, (84), 7 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 66 [2025-01-10 02:36:29,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:36:29,473 INFO L225 Difference]: With dead ends: 623 [2025-01-10 02:36:29,473 INFO L226 Difference]: Without dead ends: 622 [2025-01-10 02:36:29,473 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 110 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=207, Invalid=663, Unknown=0, NotChecked=0, Total=870 [2025-01-10 02:36:29,473 INFO L435 NwaCegarLoop]: 123 mSDtfsCounter, 718 mSDsluCounter, 1271 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 1394 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2025-01-10 02:36:29,474 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [721 Valid, 1394 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2025-01-10 02:36:29,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2025-01-10 02:36:29,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 502. [2025-01-10 02:36:29,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 378 states have (on average 1.4973544973544974) internal successors, (566), 439 states have internal predecessors, (566), 47 states have call successors, (47), 14 states have call predecessors, (47), 23 states have return successors, (78), 48 states have call predecessors, (78), 47 states have call successors, (78) [2025-01-10 02:36:29,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 691 transitions. [2025-01-10 02:36:29,507 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 691 transitions. Word has length 66 [2025-01-10 02:36:29,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:36:29,508 INFO L471 AbstractCegarLoop]: Abstraction has 502 states and 691 transitions. [2025-01-10 02:36:29,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 6.0) internal successors, (84), 13 states have internal predecessors, (84), 7 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-01-10 02:36:29,508 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 691 transitions. [2025-01-10 02:36:29,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-01-10 02:36:29,512 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:36:29,512 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:36:29,519 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-01-10 02:36:29,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2025-01-10 02:36:29,716 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-01-10 02:36:29,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:36:29,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1269393381, now seen corresponding path program 1 times [2025-01-10 02:36:29,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:36:29,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101381633] [2025-01-10 02:36:29,716 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:36:29,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:36:29,725 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-01-10 02:36:29,738 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-01-10 02:36:29,738 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:36:29,738 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-10 02:36:29,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [499542354] [2025-01-10 02:36:29,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:36:29,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:36:29,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:36:29,741 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:36:29,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-01-10 02:36:29,843 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-01-10 02:36:29,879 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-01-10 02:36:29,879 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:36:29,879 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:36:29,881 INFO L256 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 68 conjuncts are in the unsatisfiable core [2025-01-10 02:36:29,883 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:36:29,931 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 11 [2025-01-10 02:36:29,933 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 [2025-01-10 02:36:29,935 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 11 [2025-01-10 02:36:29,939 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 [2025-01-10 02:36:29,945 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 [2025-01-10 02:36:29,966 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 11 treesize of output 7