./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_ps4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 48c9605d 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_ps4.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 e26acfe1cf31c22927dddbe8bb86ce97c7f4fab4905c983e00ec89f406b53a47 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 10:05:07,708 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 10:05:07,755 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 10:05:07,763 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 10:05:07,763 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 10:05:07,790 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 10:05:07,791 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 10:05:07,791 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 10:05:07,791 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 10:05:07,791 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 10:05:07,792 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 10:05:07,792 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 10:05:07,792 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 10:05:07,793 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 10:05:07,793 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 10:05:07,793 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 10:05:07,793 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 10:05:07,793 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 10:05:07,793 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 10:05:07,794 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 10:05:07,794 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 10:05:07,794 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 10:05:07,794 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 10:05:07,794 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 10:05:07,794 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 10:05:07,794 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 10:05:07,794 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 10:05:07,794 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 10:05:07,794 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 10:05:07,794 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 10:05:07,794 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 10:05:07,794 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 10:05:07,794 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 10:05:07,794 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 10:05:07,795 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 10:05:07,795 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 10:05:07,795 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 10:05:07,795 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 10:05:07,795 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 10:05:07,795 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 10:05:07,795 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 10:05:07,795 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 10:05:07,795 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 10:05:07,795 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 10:05:07,795 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 10:05:07,795 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 -> e26acfe1cf31c22927dddbe8bb86ce97c7f4fab4905c983e00ec89f406b53a47 [2025-02-08 10:05:08,030 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 10:05:08,035 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 10:05:08,036 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 10:05:08,037 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 10:05:08,037 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 10:05:08,037 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_nla-digbench/recursified_ps4.c [2025-02-08 10:05:09,179 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4d44a7323/b678aef77e5a47dcabbdc85b22e513cb/FLAG6bbc85c34 [2025-02-08 10:05:09,438 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 10:05:09,441 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_ps4.c [2025-02-08 10:05:09,448 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4d44a7323/b678aef77e5a47dcabbdc85b22e513cb/FLAG6bbc85c34 [2025-02-08 10:05:09,755 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4d44a7323/b678aef77e5a47dcabbdc85b22e513cb [2025-02-08 10:05:09,756 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 10:05:09,757 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 10:05:09,758 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 10:05:09,758 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 10:05:09,766 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 10:05:09,767 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 10:05:09" (1/1) ... [2025-02-08 10:05:09,768 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@913ff31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:05:09, skipping insertion in model container [2025-02-08 10:05:09,768 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 10:05:09" (1/1) ... [2025-02-08 10:05:09,781 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 10:05:09,876 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 10:05:09,883 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 10:05:09,900 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 10:05:09,910 INFO L204 MainTranslator]: Completed translation [2025-02-08 10:05:09,911 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:05:09 WrapperNode [2025-02-08 10:05:09,911 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 10:05:09,912 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 10:05:09,912 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 10:05:09,912 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 10:05:09,916 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:05:09" (1/1) ... [2025-02-08 10:05:09,922 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:05:09" (1/1) ... [2025-02-08 10:05:09,938 INFO L138 Inliner]: procedures = 16, calls = 70, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 109 [2025-02-08 10:05:09,939 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 10:05:09,939 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 10:05:09,942 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 10:05:09,942 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 10:05:09,947 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:05:09" (1/1) ... [2025-02-08 10:05:09,947 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:05:09" (1/1) ... [2025-02-08 10:05:09,949 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:05:09" (1/1) ... [2025-02-08 10:05:09,965 INFO L175 MemorySlicer]: Split 47 memory accesses to 6 slices as follows [2, 6, 4, 3, 27, 5]. 57 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 6, 0, 0, 0, 0]. The 7 writes are split as follows [0, 0, 2, 1, 2, 2]. [2025-02-08 10:05:09,966 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:05:09" (1/1) ... [2025-02-08 10:05:09,966 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:05:09" (1/1) ... [2025-02-08 10:05:09,972 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:05:09" (1/1) ... [2025-02-08 10:05:09,973 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:05:09" (1/1) ... [2025-02-08 10:05:09,977 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:05:09" (1/1) ... [2025-02-08 10:05:09,978 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:05:09" (1/1) ... [2025-02-08 10:05:09,979 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 10:05:09,980 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 10:05:09,980 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 10:05:09,980 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 10:05:09,980 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:05:09" (1/1) ... [2025-02-08 10:05:09,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 10:05:09,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:05:10,013 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) [2025-02-08 10:05:10,016 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 [2025-02-08 10:05:10,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 10:05:10,033 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_25_to_33_0 [2025-02-08 10:05:10,033 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_25_to_33_0 [2025-02-08 10:05:10,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 10:05:10,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 10:05:10,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-08 10:05:10,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-08 10:05:10,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-02-08 10:05:10,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-02-08 10:05:10,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-08 10:05:10,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 10:05:10,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 10:05:10,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-08 10:05:10,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-02-08 10:05:10,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-02-08 10:05:10,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-02-08 10:05:10,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 10:05:10,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 10:05:10,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 10:05:10,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 10:05:10,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-08 10:05:10,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-02-08 10:05:10,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-02-08 10:05:10,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-02-08 10:05:10,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-08 10:05:10,034 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-08 10:05:10,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 10:05:10,092 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 10:05:10,094 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 10:05:10,490 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L73: call ULTIMATE.dealloc(main_~#k~0#1.base, main_~#k~0#1.offset);havoc main_~#k~0#1.base, main_~#k~0#1.offset;call ULTIMATE.dealloc(main_~#y~0#1.base, main_~#y~0#1.offset);havoc main_~#y~0#1.base, main_~#y~0#1.offset;call ULTIMATE.dealloc(main_~#x~0#1.base, main_~#x~0#1.offset);havoc main_~#x~0#1.base, main_~#x~0#1.offset;call ULTIMATE.dealloc(main_~#c~0#1.base, main_~#c~0#1.offset);havoc main_~#c~0#1.base, main_~#c~0#1.offset; [2025-02-08 10:05:10,510 INFO L? ?]: Removed 208 outVars from TransFormulas that were not future-live. [2025-02-08 10:05:10,511 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 10:05:10,519 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 10:05:10,519 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 10:05:10,519 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 10:05:10 BoogieIcfgContainer [2025-02-08 10:05:10,519 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 10:05:10,521 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 10:05:10,521 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 10:05:10,524 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 10:05:10,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 10:05:09" (1/3) ... [2025-02-08 10:05:10,525 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76a19c70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 10:05:10, skipping insertion in model container [2025-02-08 10:05:10,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:05:09" (2/3) ... [2025-02-08 10:05:10,525 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76a19c70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 10:05:10, skipping insertion in model container [2025-02-08 10:05:10,526 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 10:05:10" (3/3) ... [2025-02-08 10:05:10,526 INFO L128 eAbstractionObserver]: Analyzing ICFG recursified_ps4.c [2025-02-08 10:05:10,536 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 10:05:10,537 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG recursified_ps4.c that has 3 procedures, 142 locations, 1 initial locations, 0 loop locations, and 60 error locations. [2025-02-08 10:05:10,579 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 10:05:10,588 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;@3bd5b639, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 10:05:10,589 INFO L334 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2025-02-08 10:05:10,592 INFO L276 IsEmpty]: Start isEmpty. Operand has 142 states, 74 states have (on average 1.8513513513513513) internal successors, (137), 135 states have internal predecessors, (137), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-08 10:05:10,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-02-08 10:05:10,595 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:05:10,596 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-02-08 10:05:10,597 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_25_to_33_0Err31ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-02-08 10:05:10,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:05:10,602 INFO L85 PathProgramCache]: Analyzing trace with hash 162582329, now seen corresponding path program 1 times [2025-02-08 10:05:10,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:05:10,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245656831] [2025-02-08 10:05:10,610 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:10,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:05:10,675 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-08 10:05:10,698 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-08 10:05:10,699 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:10,699 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:05:10,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:05:10,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:05:10,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245656831] [2025-02-08 10:05:10,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245656831] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:05:10,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:05:10,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 10:05:10,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110830403] [2025-02-08 10:05:10,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:05:10,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 10:05:10,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:05:10,967 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 10:05:10,967 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 10:05:10,970 INFO L87 Difference]: Start difference. First operand has 142 states, 74 states have (on average 1.8513513513513513) internal successors, (137), 135 states have internal predecessors, (137), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 6 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 10:05:11,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:05:11,157 INFO L93 Difference]: Finished difference Result 366 states and 388 transitions. [2025-02-08 10:05:11,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 10:05:11,159 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2025-02-08 10:05:11,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:05:11,163 INFO L225 Difference]: With dead ends: 366 [2025-02-08 10:05:11,163 INFO L226 Difference]: Without dead ends: 221 [2025-02-08 10:05:11,166 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-02-08 10:05:11,167 INFO L435 NwaCegarLoop]: 125 mSDtfsCounter, 182 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 10:05:11,168 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 632 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 10:05:11,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2025-02-08 10:05:11,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 166. [2025-02-08 10:05:11,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 98 states have (on average 1.8265306122448979) internal successors, (179), 158 states have internal predecessors, (179), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2025-02-08 10:05:11,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 190 transitions. [2025-02-08 10:05:11,198 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 190 transitions. Word has length 5 [2025-02-08 10:05:11,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:05:11,198 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 190 transitions. [2025-02-08 10:05:11,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 10:05:11,198 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 190 transitions. [2025-02-08 10:05:11,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-08 10:05:11,201 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:05:11,202 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:05:11,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 10:05:11,202 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_25_to_33_0Err29ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-02-08 10:05:11,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:05:11,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1622796695, now seen corresponding path program 1 times [2025-02-08 10:05:11,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:05:11,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593526024] [2025-02-08 10:05:11,203 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:11,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:05:11,212 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 10:05:11,223 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 10:05:11,223 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:11,223 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:05:11,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1593374264] [2025-02-08 10:05:11,225 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:11,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:05:11,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:05:11,227 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) [2025-02-08 10:05:11,229 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 [2025-02-08 10:05:11,278 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 10:05:11,302 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 10:05:11,302 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:11,302 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:05:11,307 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-02-08 10:05:11,311 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:05:11,339 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 [2025-02-08 10:05:11,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:05:11,377 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:05:11,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:05:11,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593526024] [2025-02-08 10:05:11,378 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:05:11,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593374264] [2025-02-08 10:05:11,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593374264] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:05:11,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:05:11,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 10:05:11,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64522573] [2025-02-08 10:05:11,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:05:11,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 10:05:11,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:05:11,380 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 10:05:11,380 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 10:05:11,380 INFO L87 Difference]: Start difference. First operand 166 states and 190 transitions. Second operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 10:05:11,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:05:11,533 INFO L93 Difference]: Finished difference Result 245 states and 250 transitions. [2025-02-08 10:05:11,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 10:05:11,534 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-02-08 10:05:11,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:05:11,535 INFO L225 Difference]: With dead ends: 245 [2025-02-08 10:05:11,535 INFO L226 Difference]: Without dead ends: 239 [2025-02-08 10:05:11,535 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-02-08 10:05:11,536 INFO L435 NwaCegarLoop]: 105 mSDtfsCounter, 172 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 10:05:11,536 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 529 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 10:05:11,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2025-02-08 10:05:11,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 166. [2025-02-08 10:05:11,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 98 states have (on average 1.7653061224489797) internal successors, (173), 158 states have internal predecessors, (173), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2025-02-08 10:05:11,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 184 transitions. [2025-02-08 10:05:11,544 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 184 transitions. Word has length 7 [2025-02-08 10:05:11,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:05:11,544 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 184 transitions. [2025-02-08 10:05:11,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 10:05:11,544 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 184 transitions. [2025-02-08 10:05:11,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-02-08 10:05:11,545 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:05:11,545 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:05:11,551 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 10:05:11,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:05:11,749 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_25_to_33_0Err23ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-02-08 10:05:11,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:05:11,749 INFO L85 PathProgramCache]: Analyzing trace with hash 734427313, now seen corresponding path program 1 times [2025-02-08 10:05:11,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:05:11,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434106769] [2025-02-08 10:05:11,750 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:11,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:05:11,762 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 10:05:11,769 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 10:05:11,770 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:11,770 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:05:11,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:05:11,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:05:11,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434106769] [2025-02-08 10:05:11,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434106769] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:05:11,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:05:11,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 10:05:11,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177825042] [2025-02-08 10:05:11,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:05:11,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 10:05:11,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:05:11,925 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 10:05:11,925 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-08 10:05:11,925 INFO L87 Difference]: Start difference. First operand 166 states and 184 transitions. Second operand has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 10:05:12,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:05:12,145 INFO L93 Difference]: Finished difference Result 215 states and 220 transitions. [2025-02-08 10:05:12,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 10:05:12,146 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-02-08 10:05:12,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:05:12,147 INFO L225 Difference]: With dead ends: 215 [2025-02-08 10:05:12,147 INFO L226 Difference]: Without dead ends: 214 [2025-02-08 10:05:12,147 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-02-08 10:05:12,148 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 154 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 10:05:12,148 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 710 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 10:05:12,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2025-02-08 10:05:12,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 166. [2025-02-08 10:05:12,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 98 states have (on average 1.7551020408163265) internal successors, (172), 158 states have internal predecessors, (172), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2025-02-08 10:05:12,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 183 transitions. [2025-02-08 10:05:12,155 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 183 transitions. Word has length 13 [2025-02-08 10:05:12,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:05:12,155 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 183 transitions. [2025-02-08 10:05:12,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 10:05:12,156 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 183 transitions. [2025-02-08 10:05:12,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-02-08 10:05:12,156 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:05:12,156 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:05:12,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 10:05:12,156 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_25_to_33_0Err22ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-02-08 10:05:12,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:05:12,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1292410244, now seen corresponding path program 1 times [2025-02-08 10:05:12,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:05:12,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492786582] [2025-02-08 10:05:12,157 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:12,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:05:12,164 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 10:05:12,171 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 10:05:12,171 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:12,171 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:05:12,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1979813058] [2025-02-08 10:05:12,172 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:12,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:05:12,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:05:12,173 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) [2025-02-08 10:05:12,180 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 [2025-02-08 10:05:12,220 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 10:05:12,239 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 10:05:12,239 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:12,239 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:05:12,241 INFO L256 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 39 conjuncts are in the unsatisfiable core [2025-02-08 10:05:12,243 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:05:12,251 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 [2025-02-08 10:05:12,255 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 [2025-02-08 10:05:12,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:05:12,432 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:05:12,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:05:12,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492786582] [2025-02-08 10:05:12,433 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:05:12,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979813058] [2025-02-08 10:05:12,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979813058] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:05:12,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:05:12,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-08 10:05:12,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936902112] [2025-02-08 10:05:12,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:05:12,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-08 10:05:12,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:05:12,434 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-08 10:05:12,434 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-02-08 10:05:12,434 INFO L87 Difference]: Start difference. First operand 166 states and 183 transitions. Second operand has 9 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 10:05:12,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:05:12,783 INFO L93 Difference]: Finished difference Result 202 states and 207 transitions. [2025-02-08 10:05:12,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 10:05:12,784 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-02-08 10:05:12,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:05:12,784 INFO L225 Difference]: With dead ends: 202 [2025-02-08 10:05:12,784 INFO L226 Difference]: Without dead ends: 201 [2025-02-08 10:05:12,785 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2025-02-08 10:05:12,785 INFO L435 NwaCegarLoop]: 111 mSDtfsCounter, 152 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 10:05:12,785 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 797 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 10:05:12,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2025-02-08 10:05:12,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 166. [2025-02-08 10:05:12,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 98 states have (on average 1.7448979591836735) internal successors, (171), 158 states have internal predecessors, (171), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2025-02-08 10:05:12,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 182 transitions. [2025-02-08 10:05:12,798 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 182 transitions. Word has length 14 [2025-02-08 10:05:12,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:05:12,798 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 182 transitions. [2025-02-08 10:05:12,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 10:05:12,798 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 182 transitions. [2025-02-08 10:05:12,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-02-08 10:05:12,798 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:05:12,798 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:05:12,806 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-08 10:05:12,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:05:12,999 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_25_to_33_0Err21ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-02-08 10:05:13,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:05:13,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1410011919, now seen corresponding path program 1 times [2025-02-08 10:05:13,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:05:13,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162225781] [2025-02-08 10:05:13,000 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:13,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:05:13,006 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 10:05:13,010 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 10:05:13,010 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:13,010 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:05:13,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:05:13,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:05:13,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162225781] [2025-02-08 10:05:13,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162225781] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:05:13,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:05:13,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 10:05:13,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848744151] [2025-02-08 10:05:13,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:05:13,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 10:05:13,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:05:13,179 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 10:05:13,179 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 10:05:13,179 INFO L87 Difference]: Start difference. First operand 166 states and 182 transitions. Second operand has 6 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 10:05:13,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:05:13,306 INFO L93 Difference]: Finished difference Result 237 states and 242 transitions. [2025-02-08 10:05:13,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 10:05:13,306 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2025-02-08 10:05:13,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:05:13,307 INFO L225 Difference]: With dead ends: 237 [2025-02-08 10:05:13,307 INFO L226 Difference]: Without dead ends: 231 [2025-02-08 10:05:13,307 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-02-08 10:05:13,308 INFO L435 NwaCegarLoop]: 108 mSDtfsCounter, 134 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 10:05:13,308 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 536 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 10:05:13,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2025-02-08 10:05:13,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 166. [2025-02-08 10:05:13,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 98 states have (on average 1.683673469387755) internal successors, (165), 158 states have internal predecessors, (165), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2025-02-08 10:05:13,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 176 transitions. [2025-02-08 10:05:13,321 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 176 transitions. Word has length 15 [2025-02-08 10:05:13,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:05:13,321 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 176 transitions. [2025-02-08 10:05:13,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 10:05:13,321 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 176 transitions. [2025-02-08 10:05:13,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-02-08 10:05:13,322 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:05:13,322 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:05:13,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 10:05:13,322 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_25_to_33_0Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-02-08 10:05:13,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:05:13,322 INFO L85 PathProgramCache]: Analyzing trace with hash 764027433, now seen corresponding path program 1 times [2025-02-08 10:05:13,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:05:13,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353832246] [2025-02-08 10:05:13,322 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:13,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:05:13,332 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-08 10:05:13,343 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-08 10:05:13,343 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:13,343 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:05:13,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1653962064] [2025-02-08 10:05:13,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:13,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:05:13,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:05:13,346 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) [2025-02-08 10:05:13,348 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 [2025-02-08 10:05:13,386 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-08 10:05:13,402 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-08 10:05:13,402 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:13,402 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:05:13,403 INFO L256 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-02-08 10:05:13,405 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:05:13,416 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 [2025-02-08 10:05:13,418 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 [2025-02-08 10:05:13,456 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 [2025-02-08 10:05:13,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:05:13,549 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:05:13,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:05:13,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353832246] [2025-02-08 10:05:13,549 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:05:13,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653962064] [2025-02-08 10:05:13,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653962064] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:05:13,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:05:13,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 10:05:13,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585247454] [2025-02-08 10:05:13,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:05:13,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 10:05:13,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:05:13,550 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 10:05:13,550 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-02-08 10:05:13,550 INFO L87 Difference]: Start difference. First operand 166 states and 176 transitions. Second operand has 8 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 10:05:13,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:05:13,794 INFO L93 Difference]: Finished difference Result 195 states and 200 transitions. [2025-02-08 10:05:13,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 10:05:13,795 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2025-02-08 10:05:13,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:05:13,795 INFO L225 Difference]: With dead ends: 195 [2025-02-08 10:05:13,795 INFO L226 Difference]: Without dead ends: 194 [2025-02-08 10:05:13,796 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2025-02-08 10:05:13,796 INFO L435 NwaCegarLoop]: 109 mSDtfsCounter, 113 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 10:05:13,796 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 697 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 10:05:13,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2025-02-08 10:05:13,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 166. [2025-02-08 10:05:13,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 98 states have (on average 1.6734693877551021) internal successors, (164), 158 states have internal predecessors, (164), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2025-02-08 10:05:13,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 175 transitions. [2025-02-08 10:05:13,801 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 175 transitions. Word has length 21 [2025-02-08 10:05:13,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:05:13,801 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 175 transitions. [2025-02-08 10:05:13,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 10:05:13,802 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 175 transitions. [2025-02-08 10:05:13,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-02-08 10:05:13,802 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:05:13,802 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:05:13,808 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-08 10:05:14,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:05:14,003 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_25_to_33_0Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-02-08 10:05:14,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:05:14,003 INFO L85 PathProgramCache]: Analyzing trace with hash -2084953348, now seen corresponding path program 1 times [2025-02-08 10:05:14,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:05:14,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279589073] [2025-02-08 10:05:14,003 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:14,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:05:14,012 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-08 10:05:14,017 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-08 10:05:14,017 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:14,017 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:05:14,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [158149460] [2025-02-08 10:05:14,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:14,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:05:14,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:05:14,020 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) [2025-02-08 10:05:14,040 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 [2025-02-08 10:05:14,081 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-08 10:05:14,096 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-08 10:05:14,096 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:14,096 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:05:14,097 INFO L256 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-02-08 10:05:14,098 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:05:14,101 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 [2025-02-08 10:05:14,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:05:14,192 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:05:14,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:05:14,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279589073] [2025-02-08 10:05:14,192 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:05:14,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158149460] [2025-02-08 10:05:14,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158149460] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:05:14,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:05:14,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 10:05:14,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778307090] [2025-02-08 10:05:14,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:05:14,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 10:05:14,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:05:14,193 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 10:05:14,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-02-08 10:05:14,194 INFO L87 Difference]: Start difference. First operand 166 states and 175 transitions. Second operand has 8 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 10:05:14,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:05:14,370 INFO L93 Difference]: Finished difference Result 230 states and 235 transitions. [2025-02-08 10:05:14,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 10:05:14,371 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2025-02-08 10:05:14,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:05:14,372 INFO L225 Difference]: With dead ends: 230 [2025-02-08 10:05:14,373 INFO L226 Difference]: Without dead ends: 229 [2025-02-08 10:05:14,373 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2025-02-08 10:05:14,374 INFO L435 NwaCegarLoop]: 106 mSDtfsCounter, 154 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 10:05:14,374 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 529 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 10:05:14,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2025-02-08 10:05:14,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 166. [2025-02-08 10:05:14,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 98 states have (on average 1.663265306122449) internal successors, (163), 158 states have internal predecessors, (163), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2025-02-08 10:05:14,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 174 transitions. [2025-02-08 10:05:14,382 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 174 transitions. Word has length 22 [2025-02-08 10:05:14,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:05:14,383 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 174 transitions. [2025-02-08 10:05:14,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 10:05:14,383 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 174 transitions. [2025-02-08 10:05:14,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-02-08 10:05:14,383 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:05:14,383 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:05:14,390 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 [2025-02-08 10:05:14,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2025-02-08 10:05:14,584 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_25_to_33_0Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-02-08 10:05:14,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:05:14,584 INFO L85 PathProgramCache]: Analyzing trace with hash -209044345, now seen corresponding path program 1 times [2025-02-08 10:05:14,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:05:14,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875192268] [2025-02-08 10:05:14,585 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:14,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:05:14,595 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-08 10:05:14,601 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-08 10:05:14,602 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:14,602 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:05:14,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [706287711] [2025-02-08 10:05:14,602 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:14,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:05:14,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:05:14,604 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) [2025-02-08 10:05:14,606 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 [2025-02-08 10:05:14,648 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-08 10:05:14,665 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-08 10:05:14,665 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:14,665 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:05:14,667 INFO L256 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-02-08 10:05:14,668 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:05:14,671 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 [2025-02-08 10:05:14,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:05:14,719 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:05:14,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:05:14,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875192268] [2025-02-08 10:05:14,719 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:05:14,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706287711] [2025-02-08 10:05:14,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706287711] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:05:14,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:05:14,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 10:05:14,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751825254] [2025-02-08 10:05:14,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:05:14,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 10:05:14,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:05:14,720 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 10:05:14,720 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 10:05:14,720 INFO L87 Difference]: Start difference. First operand 166 states and 174 transitions. Second operand has 6 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 10:05:14,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:05:14,839 INFO L93 Difference]: Finished difference Result 229 states and 234 transitions. [2025-02-08 10:05:14,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 10:05:14,839 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2025-02-08 10:05:14,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:05:14,840 INFO L225 Difference]: With dead ends: 229 [2025-02-08 10:05:14,841 INFO L226 Difference]: Without dead ends: 227 [2025-02-08 10:05:14,841 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-02-08 10:05:14,842 INFO L435 NwaCegarLoop]: 113 mSDtfsCounter, 108 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 10:05:14,842 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 555 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 10:05:14,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2025-02-08 10:05:14,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 166. [2025-02-08 10:05:14,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 98 states have (on average 1.6428571428571428) internal successors, (161), 158 states have internal predecessors, (161), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2025-02-08 10:05:14,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 172 transitions. [2025-02-08 10:05:14,848 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 172 transitions. Word has length 23 [2025-02-08 10:05:14,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:05:14,848 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 172 transitions. [2025-02-08 10:05:14,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 10:05:14,850 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 172 transitions. [2025-02-08 10:05:14,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-02-08 10:05:14,850 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:05:14,850 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:05:14,859 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-08 10:05:15,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:05:15,055 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_25_to_33_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-02-08 10:05:15,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:05:15,056 INFO L85 PathProgramCache]: Analyzing trace with hash 971847397, now seen corresponding path program 1 times [2025-02-08 10:05:15,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:05:15,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374555872] [2025-02-08 10:05:15,056 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:15,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:05:15,065 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-08 10:05:15,074 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-08 10:05:15,075 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:15,075 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:05:15,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1248313885] [2025-02-08 10:05:15,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:15,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:05:15,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:05:15,084 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) [2025-02-08 10:05:15,085 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 [2025-02-08 10:05:15,128 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-08 10:05:15,146 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-08 10:05:15,146 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:15,146 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:05:15,147 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-02-08 10:05:15,149 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:05:15,153 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 [2025-02-08 10:05:15,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:05:15,377 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:05:15,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:05:15,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374555872] [2025-02-08 10:05:15,377 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:05:15,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248313885] [2025-02-08 10:05:15,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248313885] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:05:15,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:05:15,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-08 10:05:15,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335361870] [2025-02-08 10:05:15,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:05:15,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-08 10:05:15,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:05:15,378 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-08 10:05:15,379 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2025-02-08 10:05:15,379 INFO L87 Difference]: Start difference. First operand 166 states and 172 transitions. Second operand has 11 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 10:05:15,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:05:15,698 INFO L93 Difference]: Finished difference Result 227 states and 232 transitions. [2025-02-08 10:05:15,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-08 10:05:15,698 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2025-02-08 10:05:15,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:05:15,699 INFO L225 Difference]: With dead ends: 227 [2025-02-08 10:05:15,699 INFO L226 Difference]: Without dead ends: 226 [2025-02-08 10:05:15,700 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=202, Unknown=0, NotChecked=0, Total=306 [2025-02-08 10:05:15,700 INFO L435 NwaCegarLoop]: 104 mSDtfsCounter, 104 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 10:05:15,700 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 755 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 10:05:15,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2025-02-08 10:05:15,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 166. [2025-02-08 10:05:15,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 98 states have (on average 1.6326530612244898) internal successors, (160), 158 states have internal predecessors, (160), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2025-02-08 10:05:15,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 171 transitions. [2025-02-08 10:05:15,705 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 171 transitions. Word has length 25 [2025-02-08 10:05:15,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:05:15,705 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 171 transitions. [2025-02-08 10:05:15,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 10:05:15,705 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 171 transitions. [2025-02-08 10:05:15,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-02-08 10:05:15,706 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:05:15,706 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:05:15,712 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 [2025-02-08 10:05:15,910 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,SelfDestructingSolverStorable8 [2025-02-08 10:05:15,910 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_25_to_33_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-02-08 10:05:15,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:05:15,911 INFO L85 PathProgramCache]: Analyzing trace with hash 62498232, now seen corresponding path program 1 times [2025-02-08 10:05:15,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:05:15,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314962220] [2025-02-08 10:05:15,911 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:15,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:05:15,918 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-08 10:05:15,924 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-08 10:05:15,924 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:15,924 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:05:15,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2140322089] [2025-02-08 10:05:15,925 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:15,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:05:15,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:05:15,927 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) [2025-02-08 10:05:15,929 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 [2025-02-08 10:05:15,970 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-08 10:05:15,988 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-08 10:05:15,988 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:15,988 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:05:15,989 INFO L256 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-02-08 10:05:15,990 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:05:15,993 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 [2025-02-08 10:05:16,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:05:16,087 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:05:16,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:05:16,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314962220] [2025-02-08 10:05:16,087 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:05:16,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140322089] [2025-02-08 10:05:16,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140322089] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:05:16,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:05:16,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 10:05:16,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240864650] [2025-02-08 10:05:16,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:05:16,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 10:05:16,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:05:16,088 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 10:05:16,088 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-08 10:05:16,088 INFO L87 Difference]: Start difference. First operand 166 states and 171 transitions. Second operand has 7 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 10:05:16,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:05:16,250 INFO L93 Difference]: Finished difference Result 226 states and 231 transitions. [2025-02-08 10:05:16,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 10:05:16,250 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2025-02-08 10:05:16,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:05:16,251 INFO L225 Difference]: With dead ends: 226 [2025-02-08 10:05:16,252 INFO L226 Difference]: Without dead ends: 225 [2025-02-08 10:05:16,252 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-02-08 10:05:16,252 INFO L435 NwaCegarLoop]: 109 mSDtfsCounter, 106 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 10:05:16,252 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 528 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 10:05:16,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2025-02-08 10:05:16,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 166. [2025-02-08 10:05:16,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 98 states have (on average 1.6224489795918366) internal successors, (159), 158 states have internal predecessors, (159), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2025-02-08 10:05:16,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 170 transitions. [2025-02-08 10:05:16,257 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 170 transitions. Word has length 26 [2025-02-08 10:05:16,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:05:16,257 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 170 transitions. [2025-02-08 10:05:16,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 10:05:16,258 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 170 transitions. [2025-02-08 10:05:16,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-02-08 10:05:16,258 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:05:16,258 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:05:16,267 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-08 10:05:16,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:05:16,462 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_25_to_33_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-02-08 10:05:16,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:05:16,463 INFO L85 PathProgramCache]: Analyzing trace with hash 522432821, now seen corresponding path program 1 times [2025-02-08 10:05:16,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:05:16,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712452900] [2025-02-08 10:05:16,463 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:16,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:05:16,471 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-02-08 10:05:16,477 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-02-08 10:05:16,477 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:16,477 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:05:16,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:05:16,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:05:16,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712452900] [2025-02-08 10:05:16,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712452900] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:05:16,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:05:16,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 10:05:16,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586306854] [2025-02-08 10:05:16,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:05:16,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 10:05:16,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:05:16,667 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 10:05:16,667 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-08 10:05:16,667 INFO L87 Difference]: Start difference. First operand 166 states and 170 transitions. Second operand has 7 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 10:05:16,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:05:16,735 INFO L93 Difference]: Finished difference Result 229 states and 233 transitions. [2025-02-08 10:05:16,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 10:05:16,735 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2025-02-08 10:05:16,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:05:16,736 INFO L225 Difference]: With dead ends: 229 [2025-02-08 10:05:16,736 INFO L226 Difference]: Without dead ends: 228 [2025-02-08 10:05:16,737 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2025-02-08 10:05:16,737 INFO L435 NwaCegarLoop]: 131 mSDtfsCounter, 93 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 10:05:16,737 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 769 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 10:05:16,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2025-02-08 10:05:16,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 167. [2025-02-08 10:05:16,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 99 states have (on average 1.6161616161616161) internal successors, (160), 159 states have internal predecessors, (160), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2025-02-08 10:05:16,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 171 transitions. [2025-02-08 10:05:16,741 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 171 transitions. Word has length 34 [2025-02-08 10:05:16,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:05:16,742 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 171 transitions. [2025-02-08 10:05:16,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 10:05:16,742 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 171 transitions. [2025-02-08 10:05:16,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-02-08 10:05:16,742 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:05:16,743 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:05:16,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-08 10:05:16,743 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_25_to_33_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-02-08 10:05:16,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:05:16,743 INFO L85 PathProgramCache]: Analyzing trace with hash -984451746, now seen corresponding path program 1 times [2025-02-08 10:05:16,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:05:16,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729068344] [2025-02-08 10:05:16,743 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:16,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:05:16,750 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-08 10:05:16,754 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-08 10:05:16,754 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:16,754 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:05:16,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:05:16,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:05:16,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729068344] [2025-02-08 10:05:16,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729068344] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:05:16,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:05:16,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 10:05:16,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926574733] [2025-02-08 10:05:16,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:05:16,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 10:05:16,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:05:16,947 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 10:05:16,947 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-08 10:05:16,947 INFO L87 Difference]: Start difference. First operand 167 states and 171 transitions. Second operand has 7 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 10:05:17,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:05:17,037 INFO L93 Difference]: Finished difference Result 228 states and 232 transitions. [2025-02-08 10:05:17,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 10:05:17,038 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2025-02-08 10:05:17,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:05:17,039 INFO L225 Difference]: With dead ends: 228 [2025-02-08 10:05:17,039 INFO L226 Difference]: Without dead ends: 227 [2025-02-08 10:05:17,039 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2025-02-08 10:05:17,039 INFO L435 NwaCegarLoop]: 132 mSDtfsCounter, 90 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 10:05:17,040 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 670 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 10:05:17,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2025-02-08 10:05:17,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 168. [2025-02-08 10:05:17,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 100 states have (on average 1.61) internal successors, (161), 160 states have internal predecessors, (161), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2025-02-08 10:05:17,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 172 transitions. [2025-02-08 10:05:17,044 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 172 transitions. Word has length 35 [2025-02-08 10:05:17,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:05:17,044 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 172 transitions. [2025-02-08 10:05:17,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 10:05:17,044 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 172 transitions. [2025-02-08 10:05:17,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-02-08 10:05:17,045 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:05:17,045 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:05:17,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-02-08 10:05:17,045 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting func_to_recursive_line_25_to_33_0Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-02-08 10:05:17,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:05:17,046 INFO L85 PathProgramCache]: Analyzing trace with hash -453233069, now seen corresponding path program 1 times [2025-02-08 10:05:17,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:05:17,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611404620] [2025-02-08 10:05:17,046 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:17,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:05:17,053 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-02-08 10:05:17,056 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-02-08 10:05:17,057 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:17,057 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:05:17,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:05:17,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:05:17,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611404620] [2025-02-08 10:05:17,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611404620] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:05:17,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:05:17,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 10:05:17,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121744216] [2025-02-08 10:05:17,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:05:17,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 10:05:17,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:05:17,155 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 10:05:17,155 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 10:05:17,156 INFO L87 Difference]: Start difference. First operand 168 states and 172 transitions. Second operand has 6 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 10:05:17,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:05:17,243 INFO L93 Difference]: Finished difference Result 223 states and 228 transitions. [2025-02-08 10:05:17,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 10:05:17,244 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2025-02-08 10:05:17,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:05:17,245 INFO L225 Difference]: With dead ends: 223 [2025-02-08 10:05:17,245 INFO L226 Difference]: Without dead ends: 221 [2025-02-08 10:05:17,246 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 [2025-02-08 10:05:17,246 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 85 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 10:05:17,247 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 571 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 10:05:17,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2025-02-08 10:05:17,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 170. [2025-02-08 10:05:17,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 102 states have (on average 1.5980392156862746) internal successors, (163), 162 states have internal predecessors, (163), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2025-02-08 10:05:17,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 174 transitions. [2025-02-08 10:05:17,252 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 174 transitions. Word has length 36 [2025-02-08 10:05:17,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:05:17,253 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 174 transitions. [2025-02-08 10:05:17,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 10:05:17,253 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 174 transitions. [2025-02-08 10:05:17,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-02-08 10:05:17,255 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:05:17,255 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:05:17,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-08 10:05:17,255 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-02-08 10:05:17,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:05:17,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1165395251, now seen corresponding path program 1 times [2025-02-08 10:05:17,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:05:17,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815899805] [2025-02-08 10:05:17,256 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:17,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:05:17,262 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-02-08 10:05:17,269 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-02-08 10:05:17,270 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:17,270 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:05:17,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [705803762] [2025-02-08 10:05:17,270 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:17,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:05:17,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:05:17,272 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) [2025-02-08 10:05:17,273 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 [2025-02-08 10:05:17,318 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-02-08 10:05:17,337 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-02-08 10:05:17,337 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:17,337 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:05:17,339 INFO L256 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-08 10:05:17,340 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:05:17,345 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 [2025-02-08 10:05:17,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:05:17,382 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:05:17,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:05:17,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815899805] [2025-02-08 10:05:17,383 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:05:17,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705803762] [2025-02-08 10:05:17,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705803762] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:05:17,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:05:17,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 10:05:17,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069750209] [2025-02-08 10:05:17,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:05:17,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 10:05:17,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:05:17,384 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 10:05:17,384 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 10:05:17,384 INFO L87 Difference]: Start difference. First operand 170 states and 174 transitions. Second operand has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:05:17,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:05:17,466 INFO L93 Difference]: Finished difference Result 223 states and 228 transitions. [2025-02-08 10:05:17,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 10:05:17,467 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37 [2025-02-08 10:05:17,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:05:17,468 INFO L225 Difference]: With dead ends: 223 [2025-02-08 10:05:17,469 INFO L226 Difference]: Without dead ends: 221 [2025-02-08 10:05:17,469 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-08 10:05:17,469 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 88 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 10:05:17,469 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 380 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 10:05:17,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2025-02-08 10:05:17,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 175. [2025-02-08 10:05:17,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 106 states have (on average 1.5754716981132075) internal successors, (167), 165 states have internal predecessors, (167), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2025-02-08 10:05:17,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 179 transitions. [2025-02-08 10:05:17,474 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 179 transitions. Word has length 37 [2025-02-08 10:05:17,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:05:17,474 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 179 transitions. [2025-02-08 10:05:17,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:05:17,474 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 179 transitions. [2025-02-08 10:05:17,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-02-08 10:05:17,475 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:05:17,475 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:05:17,481 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-08 10:05:17,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:05:17,675 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting func_to_recursive_line_25_to_33_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-02-08 10:05:17,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:05:17,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1765282959, now seen corresponding path program 1 times [2025-02-08 10:05:17,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:05:17,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71091225] [2025-02-08 10:05:17,676 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:17,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:05:17,682 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-02-08 10:05:17,689 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-02-08 10:05:17,689 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:17,689 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:05:17,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1062022740] [2025-02-08 10:05:17,690 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:17,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:05:17,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:05:17,692 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) [2025-02-08 10:05:17,694 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 [2025-02-08 10:05:17,740 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-02-08 10:05:17,780 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-02-08 10:05:17,780 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:17,780 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:05:17,781 INFO L256 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-02-08 10:05:17,784 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:05:17,787 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 [2025-02-08 10:05:17,951 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 26 treesize of output 14 [2025-02-08 10:05:17,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:05:17,971 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:05:17,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:05:17,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71091225] [2025-02-08 10:05:17,971 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:05:17,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062022740] [2025-02-08 10:05:17,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062022740] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:05:17,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:05:17,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 10:05:17,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372659404] [2025-02-08 10:05:17,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:05:17,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 10:05:17,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:05:17,972 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 10:05:17,972 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-08 10:05:17,972 INFO L87 Difference]: Start difference. First operand 175 states and 179 transitions. Second operand has 8 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 10:05:18,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:05:18,153 INFO L93 Difference]: Finished difference Result 223 states and 229 transitions. [2025-02-08 10:05:18,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 10:05:18,153 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2025-02-08 10:05:18,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:05:18,154 INFO L225 Difference]: With dead ends: 223 [2025-02-08 10:05:18,154 INFO L226 Difference]: Without dead ends: 221 [2025-02-08 10:05:18,154 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2025-02-08 10:05:18,154 INFO L435 NwaCegarLoop]: 101 mSDtfsCounter, 221 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 10:05:18,155 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 446 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 10:05:18,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2025-02-08 10:05:18,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 173. [2025-02-08 10:05:18,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 106 states have (on average 1.5566037735849056) internal successors, (165), 163 states have internal predecessors, (165), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2025-02-08 10:05:18,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 177 transitions. [2025-02-08 10:05:18,159 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 177 transitions. Word has length 38 [2025-02-08 10:05:18,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:05:18,159 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 177 transitions. [2025-02-08 10:05:18,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 10:05:18,159 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 177 transitions. [2025-02-08 10:05:18,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-02-08 10:05:18,160 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:05:18,160 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:05:18,169 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-08 10:05:18,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:05:18,364 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-02-08 10:05:18,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:05:18,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1041631371, now seen corresponding path program 1 times [2025-02-08 10:05:18,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:05:18,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675024208] [2025-02-08 10:05:18,364 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:18,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:05:18,370 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-08 10:05:18,375 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-08 10:05:18,375 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:18,375 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:05:18,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1123449885] [2025-02-08 10:05:18,375 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:18,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:05:18,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:05:18,377 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) [2025-02-08 10:05:18,378 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 [2025-02-08 10:05:18,425 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-08 10:05:18,443 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-08 10:05:18,444 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:18,444 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:05:18,444 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-08 10:05:18,445 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:05:18,450 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 [2025-02-08 10:05:18,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:05:18,511 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:05:18,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:05:18,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675024208] [2025-02-08 10:05:18,511 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:05:18,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123449885] [2025-02-08 10:05:18,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123449885] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:05:18,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:05:18,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 10:05:18,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821453966] [2025-02-08 10:05:18,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:05:18,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 10:05:18,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:05:18,512 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 10:05:18,512 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 10:05:18,512 INFO L87 Difference]: Start difference. First operand 173 states and 177 transitions. Second operand has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:05:18,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:05:18,607 INFO L93 Difference]: Finished difference Result 219 states and 224 transitions. [2025-02-08 10:05:18,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 10:05:18,607 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 39 [2025-02-08 10:05:18,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:05:18,608 INFO L225 Difference]: With dead ends: 219 [2025-02-08 10:05:18,608 INFO L226 Difference]: Without dead ends: 217 [2025-02-08 10:05:18,608 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-08 10:05:18,609 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 79 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 10:05:18,609 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 370 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 10:05:18,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2025-02-08 10:05:18,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 175. [2025-02-08 10:05:18,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 108 states have (on average 1.5462962962962963) internal successors, (167), 165 states have internal predecessors, (167), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2025-02-08 10:05:18,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 179 transitions. [2025-02-08 10:05:18,613 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 179 transitions. Word has length 39 [2025-02-08 10:05:18,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:05:18,614 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 179 transitions. [2025-02-08 10:05:18,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:05:18,614 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 179 transitions. [2025-02-08 10:05:18,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-02-08 10:05:18,614 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:05:18,614 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:05:18,620 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-08 10:05:18,815 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,SelfDestructingSolverStorable15 [2025-02-08 10:05:18,815 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting func_to_recursive_line_25_to_33_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-02-08 10:05:18,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:05:18,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1110803098, now seen corresponding path program 1 times [2025-02-08 10:05:18,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:05:18,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593885462] [2025-02-08 10:05:18,815 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:18,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:05:18,822 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-08 10:05:18,827 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-08 10:05:18,827 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:18,827 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:05:18,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1376793616] [2025-02-08 10:05:18,828 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:18,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:05:18,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:05:18,830 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) [2025-02-08 10:05:18,832 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 [2025-02-08 10:05:18,876 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-08 10:05:18,897 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-08 10:05:18,897 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:18,897 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:05:18,898 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-08 10:05:18,899 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:05:18,906 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 [2025-02-08 10:05:18,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:05:18,993 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:05:18,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:05:18,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593885462] [2025-02-08 10:05:18,993 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:05:18,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376793616] [2025-02-08 10:05:18,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376793616] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:05:18,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:05:18,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 10:05:18,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718413998] [2025-02-08 10:05:18,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:05:18,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 10:05:18,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:05:18,994 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 10:05:18,994 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-08 10:05:18,994 INFO L87 Difference]: Start difference. First operand 175 states and 179 transitions. Second operand has 8 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 10:05:19,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:05:19,131 INFO L93 Difference]: Finished difference Result 236 states and 243 transitions. [2025-02-08 10:05:19,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 10:05:19,131 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2025-02-08 10:05:19,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:05:19,132 INFO L225 Difference]: With dead ends: 236 [2025-02-08 10:05:19,132 INFO L226 Difference]: Without dead ends: 235 [2025-02-08 10:05:19,132 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-02-08 10:05:19,132 INFO L435 NwaCegarLoop]: 104 mSDtfsCounter, 90 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 10:05:19,132 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 639 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 10:05:19,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2025-02-08 10:05:19,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 184. [2025-02-08 10:05:19,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 115 states have (on average 1.5304347826086957) internal successors, (176), 173 states have internal predecessors, (176), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2025-02-08 10:05:19,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 190 transitions. [2025-02-08 10:05:19,137 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 190 transitions. Word has length 39 [2025-02-08 10:05:19,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:05:19,137 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 190 transitions. [2025-02-08 10:05:19,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 10:05:19,137 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 190 transitions. [2025-02-08 10:05:19,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2025-02-08 10:05:19,138 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:05:19,138 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:05:19,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-02-08 10:05:19,338 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,SelfDestructingSolverStorable16 [2025-02-08 10:05:19,339 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting func_to_recursive_line_25_to_33_0Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-02-08 10:05:19,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:05:19,339 INFO L85 PathProgramCache]: Analyzing trace with hash 75157647, now seen corresponding path program 1 times [2025-02-08 10:05:19,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:05:19,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621926463] [2025-02-08 10:05:19,339 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:19,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:05:19,345 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-02-08 10:05:19,351 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-02-08 10:05:19,351 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:19,351 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:05:19,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [854627852] [2025-02-08 10:05:19,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:19,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:05:19,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:05:19,353 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) [2025-02-08 10:05:19,355 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 [2025-02-08 10:05:19,402 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-02-08 10:05:19,421 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-02-08 10:05:19,421 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:19,422 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:05:19,423 INFO L256 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-02-08 10:05:19,424 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:05:19,427 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 [2025-02-08 10:05:19,498 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 36 treesize of output 13 [2025-02-08 10:05:19,513 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 29 treesize of output 13 [2025-02-08 10:05:19,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:05:19,528 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:05:19,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:05:19,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621926463] [2025-02-08 10:05:19,528 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:05:19,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854627852] [2025-02-08 10:05:19,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854627852] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:05:19,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:05:19,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-08 10:05:19,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213141392] [2025-02-08 10:05:19,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:05:19,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-08 10:05:19,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:05:19,529 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-08 10:05:19,529 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-02-08 10:05:19,530 INFO L87 Difference]: Start difference. First operand 184 states and 190 transitions. Second operand has 9 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 10:05:19,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:05:19,699 INFO L93 Difference]: Finished difference Result 225 states and 230 transitions. [2025-02-08 10:05:19,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 10:05:19,699 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2025-02-08 10:05:19,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:05:19,700 INFO L225 Difference]: With dead ends: 225 [2025-02-08 10:05:19,700 INFO L226 Difference]: Without dead ends: 224 [2025-02-08 10:05:19,701 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2025-02-08 10:05:19,701 INFO L435 NwaCegarLoop]: 101 mSDtfsCounter, 215 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 10:05:19,701 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 593 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 10:05:19,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2025-02-08 10:05:19,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 183. [2025-02-08 10:05:19,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 115 states have (on average 1.5217391304347827) internal successors, (175), 172 states have internal predecessors, (175), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2025-02-08 10:05:19,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 189 transitions. [2025-02-08 10:05:19,706 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 189 transitions. Word has length 40 [2025-02-08 10:05:19,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:05:19,706 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 189 transitions. [2025-02-08 10:05:19,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 10:05:19,706 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 189 transitions. [2025-02-08 10:05:19,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2025-02-08 10:05:19,706 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:05:19,706 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:05:19,713 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 [2025-02-08 10:05:19,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-02-08 10:05:19,911 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-02-08 10:05:19,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:05:19,911 INFO L85 PathProgramCache]: Analyzing trace with hash 280370761, now seen corresponding path program 1 times [2025-02-08 10:05:19,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:05:19,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694516115] [2025-02-08 10:05:19,912 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:19,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:05:19,917 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-02-08 10:05:19,926 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-02-08 10:05:19,926 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:19,926 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:05:19,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1934224374] [2025-02-08 10:05:19,927 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:19,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:05:19,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:05:19,928 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) [2025-02-08 10:05:19,930 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 [2025-02-08 10:05:19,979 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-02-08 10:05:19,996 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-02-08 10:05:19,996 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:19,997 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:05:19,997 INFO L256 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-08 10:05:19,998 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:05:20,000 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 [2025-02-08 10:05:20,038 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 7 treesize of output 3 [2025-02-08 10:05:20,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:05:20,057 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:05:20,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:05:20,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694516115] [2025-02-08 10:05:20,057 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:05:20,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934224374] [2025-02-08 10:05:20,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934224374] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:05:20,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:05:20,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 10:05:20,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759737967] [2025-02-08 10:05:20,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:05:20,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 10:05:20,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:05:20,058 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 10:05:20,058 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-08 10:05:20,058 INFO L87 Difference]: Start difference. First operand 183 states and 189 transitions. Second operand has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:05:20,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:05:20,163 INFO L93 Difference]: Finished difference Result 222 states and 226 transitions. [2025-02-08 10:05:20,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 10:05:20,163 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2025-02-08 10:05:20,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:05:20,164 INFO L225 Difference]: With dead ends: 222 [2025-02-08 10:05:20,164 INFO L226 Difference]: Without dead ends: 220 [2025-02-08 10:05:20,164 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-02-08 10:05:20,165 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 75 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 10:05:20,165 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 463 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 10:05:20,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2025-02-08 10:05:20,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 183. [2025-02-08 10:05:20,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 115 states have (on average 1.5043478260869565) internal successors, (173), 172 states have internal predecessors, (173), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2025-02-08 10:05:20,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 187 transitions. [2025-02-08 10:05:20,169 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 187 transitions. Word has length 41 [2025-02-08 10:05:20,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:05:20,170 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 187 transitions. [2025-02-08 10:05:20,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:05:20,170 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 187 transitions. [2025-02-08 10:05:20,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2025-02-08 10:05:20,170 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:05:20,170 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:05:20,177 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 [2025-02-08 10:05:20,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:05:20,371 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting func_to_recursive_line_25_to_33_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-02-08 10:05:20,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:05:20,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1965080264, now seen corresponding path program 1 times [2025-02-08 10:05:20,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:05:20,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860809661] [2025-02-08 10:05:20,372 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:20,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:05:20,378 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-02-08 10:05:20,383 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-02-08 10:05:20,383 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:20,383 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:05:20,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2076514981] [2025-02-08 10:05:20,384 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:20,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:05:20,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:05:20,386 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) [2025-02-08 10:05:20,392 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 [2025-02-08 10:05:20,444 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-02-08 10:05:20,483 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-02-08 10:05:20,483 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:20,484 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:05:20,485 INFO L256 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-02-08 10:05:20,486 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:05:20,488 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 [2025-02-08 10:05:20,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 10:05:20,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:05:20,584 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:05:20,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:05:20,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860809661] [2025-02-08 10:05:20,584 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:05:20,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076514981] [2025-02-08 10:05:20,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076514981] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:05:20,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:05:20,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-08 10:05:20,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334055403] [2025-02-08 10:05:20,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:05:20,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-08 10:05:20,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:05:20,585 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-08 10:05:20,585 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-02-08 10:05:20,585 INFO L87 Difference]: Start difference. First operand 183 states and 187 transitions. Second operand has 9 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 10:05:20,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:05:20,754 INFO L93 Difference]: Finished difference Result 233 states and 238 transitions. [2025-02-08 10:05:20,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 10:05:20,755 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2025-02-08 10:05:20,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:05:20,755 INFO L225 Difference]: With dead ends: 233 [2025-02-08 10:05:20,755 INFO L226 Difference]: Without dead ends: 232 [2025-02-08 10:05:20,757 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2025-02-08 10:05:20,758 INFO L435 NwaCegarLoop]: 105 mSDtfsCounter, 90 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 10:05:20,758 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 743 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 10:05:20,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2025-02-08 10:05:20,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 185. [2025-02-08 10:05:20,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 117 states have (on average 1.4957264957264957) internal successors, (175), 174 states have internal predecessors, (175), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2025-02-08 10:05:20,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 189 transitions. [2025-02-08 10:05:20,764 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 189 transitions. Word has length 41 [2025-02-08 10:05:20,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:05:20,764 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 189 transitions. [2025-02-08 10:05:20,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 10:05:20,764 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 189 transitions. [2025-02-08 10:05:20,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-02-08 10:05:20,765 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:05:20,765 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:05:20,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-02-08 10:05:20,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:05:20,969 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-02-08 10:05:20,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:05:20,970 INFO L85 PathProgramCache]: Analyzing trace with hash -787946067, now seen corresponding path program 1 times [2025-02-08 10:05:20,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:05:20,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528047602] [2025-02-08 10:05:20,970 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:20,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:05:20,977 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-02-08 10:05:20,982 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-02-08 10:05:20,983 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:20,983 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:05:21,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:05:21,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:05:21,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528047602] [2025-02-08 10:05:21,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528047602] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:05:21,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:05:21,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 10:05:21,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338862228] [2025-02-08 10:05:21,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:05:21,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 10:05:21,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:05:21,094 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 10:05:21,095 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-08 10:05:21,095 INFO L87 Difference]: Start difference. First operand 185 states and 189 transitions. Second operand has 7 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 10:05:21,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:05:21,209 INFO L93 Difference]: Finished difference Result 190 states and 194 transitions. [2025-02-08 10:05:21,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 10:05:21,209 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2025-02-08 10:05:21,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:05:21,210 INFO L225 Difference]: With dead ends: 190 [2025-02-08 10:05:21,210 INFO L226 Difference]: Without dead ends: 189 [2025-02-08 10:05:21,210 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-02-08 10:05:21,211 INFO L435 NwaCegarLoop]: 128 mSDtfsCounter, 51 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 10:05:21,211 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 736 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 10:05:21,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2025-02-08 10:05:21,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 186. [2025-02-08 10:05:21,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 118 states have (on average 1.4915254237288136) internal successors, (176), 175 states have internal predecessors, (176), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2025-02-08 10:05:21,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 190 transitions. [2025-02-08 10:05:21,216 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 190 transitions. Word has length 42 [2025-02-08 10:05:21,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:05:21,216 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 190 transitions. [2025-02-08 10:05:21,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 10:05:21,216 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 190 transitions. [2025-02-08 10:05:21,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-02-08 10:05:21,217 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:05:21,217 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:05:21,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-02-08 10:05:21,217 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-02-08 10:05:21,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:05:21,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1343475670, now seen corresponding path program 1 times [2025-02-08 10:05:21,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:05:21,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950427132] [2025-02-08 10:05:21,217 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:21,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:05:21,226 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-02-08 10:05:21,229 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-02-08 10:05:21,230 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:21,230 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:05:21,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:05:21,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:05:21,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950427132] [2025-02-08 10:05:21,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950427132] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:05:21,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:05:21,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 10:05:21,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139595065] [2025-02-08 10:05:21,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:05:21,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 10:05:21,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:05:21,326 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 10:05:21,326 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 10:05:21,326 INFO L87 Difference]: Start difference. First operand 186 states and 190 transitions. Second operand has 6 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 10:05:21,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:05:21,411 INFO L93 Difference]: Finished difference Result 189 states and 193 transitions. [2025-02-08 10:05:21,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 10:05:21,414 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), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2025-02-08 10:05:21,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:05:21,414 INFO L225 Difference]: With dead ends: 189 [2025-02-08 10:05:21,416 INFO L226 Difference]: Without dead ends: 188 [2025-02-08 10:05:21,416 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 [2025-02-08 10:05:21,417 INFO L435 NwaCegarLoop]: 129 mSDtfsCounter, 48 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 10:05:21,417 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 623 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 10:05:21,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2025-02-08 10:05:21,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 187. [2025-02-08 10:05:21,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 119 states have (on average 1.4873949579831933) internal successors, (177), 176 states have internal predecessors, (177), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2025-02-08 10:05:21,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 191 transitions. [2025-02-08 10:05:21,425 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 191 transitions. Word has length 43 [2025-02-08 10:05:21,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:05:21,425 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 191 transitions. [2025-02-08 10:05:21,425 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), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 10:05:21,425 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 191 transitions. [2025-02-08 10:05:21,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2025-02-08 10:05:21,425 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:05:21,425 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-02-08 10:05:21,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-02-08 10:05:21,426 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting func_to_recursive_line_25_to_33_0Err31ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-02-08 10:05:21,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:05:21,426 INFO L85 PathProgramCache]: Analyzing trace with hash 2140231275, now seen corresponding path program 1 times [2025-02-08 10:05:21,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:05:21,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636927588] [2025-02-08 10:05:21,426 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:21,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:05:21,433 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 47 statements into 1 equivalence classes. [2025-02-08 10:05:21,441 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-02-08 10:05:21,441 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:21,441 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:05:21,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [545701428] [2025-02-08 10:05:21,442 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:21,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:05:21,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:05:21,444 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) [2025-02-08 10:05:21,446 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 [2025-02-08 10:05:21,502 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 47 statements into 1 equivalence classes. [2025-02-08 10:05:21,525 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-02-08 10:05:21,525 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:21,525 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:05:21,530 INFO L256 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 57 conjuncts are in the unsatisfiable core [2025-02-08 10:05:21,532 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:05:21,541 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 [2025-02-08 10:05:21,543 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 [2025-02-08 10:05:21,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 10:05:21,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 10:05:21,814 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:05:21,814 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:05:22,084 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:05:22,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:05:22,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636927588] [2025-02-08 10:05:22,084 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:05:22,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545701428] [2025-02-08 10:05:22,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545701428] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 10:05:22,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 10:05:22,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2025-02-08 10:05:22,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557117003] [2025-02-08 10:05:22,085 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 10:05:22,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-08 10:05:22,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:05:22,085 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-08 10:05:22,085 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2025-02-08 10:05:22,086 INFO L87 Difference]: Start difference. First operand 187 states and 191 transitions. Second operand has 23 states, 20 states have (on average 4.3) internal successors, (86), 19 states have internal predecessors, (86), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:05:23,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:05:23,352 INFO L93 Difference]: Finished difference Result 373 states and 383 transitions. [2025-02-08 10:05:23,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-02-08 10:05:23,352 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 4.3) internal successors, (86), 19 states have internal predecessors, (86), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 47 [2025-02-08 10:05:23,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:05:23,353 INFO L225 Difference]: With dead ends: 373 [2025-02-08 10:05:23,353 INFO L226 Difference]: Without dead ends: 370 [2025-02-08 10:05:23,354 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=1296, Unknown=0, NotChecked=0, Total=1560 [2025-02-08 10:05:23,354 INFO L435 NwaCegarLoop]: 106 mSDtfsCounter, 638 mSDsluCounter, 1509 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 1079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-02-08 10:05:23,354 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [640 Valid, 1615 Invalid, 1079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1052 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-02-08 10:05:23,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2025-02-08 10:05:23,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 261. [2025-02-08 10:05:23,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 185 states have (on average 1.5783783783783785) internal successors, (292), 244 states have internal predecessors, (292), 10 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2025-02-08 10:05:23,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 318 transitions. [2025-02-08 10:05:23,366 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 318 transitions. Word has length 47 [2025-02-08 10:05:23,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:05:23,366 INFO L471 AbstractCegarLoop]: Abstraction has 261 states and 318 transitions. [2025-02-08 10:05:23,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 4.3) internal successors, (86), 19 states have internal predecessors, (86), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:05:23,366 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 318 transitions. [2025-02-08 10:05:23,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2025-02-08 10:05:23,367 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:05:23,367 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:05:23,376 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-02-08 10:05:23,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:05:23,571 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-02-08 10:05:23,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:05:23,571 INFO L85 PathProgramCache]: Analyzing trace with hash 979094728, now seen corresponding path program 1 times [2025-02-08 10:05:23,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:05:23,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22029279] [2025-02-08 10:05:23,571 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:23,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:05:23,582 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-02-08 10:05:23,589 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-02-08 10:05:23,589 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:23,589 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:05:23,697 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 10:05:23,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:05:23,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22029279] [2025-02-08 10:05:23,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22029279] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:05:23,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:05:23,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 10:05:23,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111236102] [2025-02-08 10:05:23,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:05:23,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 10:05:23,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:05:23,702 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 10:05:23,702 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 10:05:23,702 INFO L87 Difference]: Start difference. First operand 261 states and 318 transitions. Second operand has 5 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-08 10:05:23,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:05:23,823 INFO L93 Difference]: Finished difference Result 299 states and 362 transitions. [2025-02-08 10:05:23,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 10:05:23,825 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 49 [2025-02-08 10:05:23,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:05:23,826 INFO L225 Difference]: With dead ends: 299 [2025-02-08 10:05:23,826 INFO L226 Difference]: Without dead ends: 298 [2025-02-08 10:05:23,826 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 10:05:23,826 INFO L435 NwaCegarLoop]: 112 mSDtfsCounter, 77 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 10:05:23,827 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 372 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 10:05:23,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2025-02-08 10:05:23,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 263. [2025-02-08 10:05:23,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 187 states have (on average 1.572192513368984) internal successors, (294), 245 states have internal predecessors, (294), 10 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (16), 11 states have call predecessors, (16), 10 states have call successors, (16) [2025-02-08 10:05:23,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 320 transitions. [2025-02-08 10:05:23,846 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 320 transitions. Word has length 49 [2025-02-08 10:05:23,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:05:23,846 INFO L471 AbstractCegarLoop]: Abstraction has 263 states and 320 transitions. [2025-02-08 10:05:23,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-08 10:05:23,846 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 320 transitions. [2025-02-08 10:05:23,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2025-02-08 10:05:23,846 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:05:23,846 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-02-08 10:05:23,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-02-08 10:05:23,847 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting func_to_recursive_line_25_to_33_0Err29ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-02-08 10:05:23,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:05:23,847 INFO L85 PathProgramCache]: Analyzing trace with hash -527078327, now seen corresponding path program 1 times [2025-02-08 10:05:23,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:05:23,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739129655] [2025-02-08 10:05:23,847 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:23,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:05:23,854 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-02-08 10:05:23,863 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-02-08 10:05:23,863 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:23,863 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:05:23,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1709791324] [2025-02-08 10:05:23,864 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:23,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:05:23,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:05:23,871 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) [2025-02-08 10:05:23,872 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 [2025-02-08 10:05:23,933 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-02-08 10:05:23,958 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-02-08 10:05:23,958 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:23,958 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:05:23,960 INFO L256 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-02-08 10:05:23,961 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:05:23,965 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 [2025-02-08 10:05:24,035 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 36 treesize of output 13 [2025-02-08 10:05:24,058 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 [2025-02-08 10:05:24,067 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:05:24,067 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:05:24,241 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:05:24,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:05:24,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739129655] [2025-02-08 10:05:24,241 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:05:24,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709791324] [2025-02-08 10:05:24,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709791324] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 10:05:24,241 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 10:05:24,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2025-02-08 10:05:24,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488859146] [2025-02-08 10:05:24,241 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 10:05:24,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-08 10:05:24,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:05:24,242 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-08 10:05:24,242 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2025-02-08 10:05:24,242 INFO L87 Difference]: Start difference. First operand 263 states and 320 transitions. Second operand has 15 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:05:24,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:05:24,783 INFO L93 Difference]: Finished difference Result 299 states and 357 transitions. [2025-02-08 10:05:24,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-08 10:05:24,783 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 49 [2025-02-08 10:05:24,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:05:24,784 INFO L225 Difference]: With dead ends: 299 [2025-02-08 10:05:24,784 INFO L226 Difference]: Without dead ends: 298 [2025-02-08 10:05:24,784 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 79 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2025-02-08 10:05:24,785 INFO L435 NwaCegarLoop]: 111 mSDtfsCounter, 416 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-08 10:05:24,785 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 706 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-08 10:05:24,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2025-02-08 10:05:24,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 264. [2025-02-08 10:05:24,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 188 states have (on average 1.553191489361702) internal successors, (292), 245 states have internal predecessors, (292), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2025-02-08 10:05:24,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 320 transitions. [2025-02-08 10:05:24,794 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 320 transitions. Word has length 49 [2025-02-08 10:05:24,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:05:24,794 INFO L471 AbstractCegarLoop]: Abstraction has 264 states and 320 transitions. [2025-02-08 10:05:24,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:05:24,794 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 320 transitions. [2025-02-08 10:05:24,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-02-08 10:05:24,794 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:05:24,794 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:05:24,802 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-02-08 10:05:24,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:05:24,998 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-02-08 10:05:24,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:05:24,998 INFO L85 PathProgramCache]: Analyzing trace with hash 287165586, now seen corresponding path program 1 times [2025-02-08 10:05:24,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:05:24,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348110543] [2025-02-08 10:05:24,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:24,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:05:25,012 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-02-08 10:05:25,016 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-02-08 10:05:25,016 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:25,016 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:05:25,087 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 10:05:25,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:05:25,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348110543] [2025-02-08 10:05:25,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348110543] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:05:25,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:05:25,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 10:05:25,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771846865] [2025-02-08 10:05:25,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:05:25,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 10:05:25,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:05:25,088 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 10:05:25,088 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 10:05:25,089 INFO L87 Difference]: Start difference. First operand 264 states and 320 transitions. Second operand has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-08 10:05:25,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:05:25,213 INFO L93 Difference]: Finished difference Result 300 states and 361 transitions. [2025-02-08 10:05:25,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 10:05:25,214 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 50 [2025-02-08 10:05:25,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:05:25,215 INFO L225 Difference]: With dead ends: 300 [2025-02-08 10:05:25,215 INFO L226 Difference]: Without dead ends: 299 [2025-02-08 10:05:25,215 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 10:05:25,216 INFO L435 NwaCegarLoop]: 112 mSDtfsCounter, 75 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 10:05:25,216 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 372 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 10:05:25,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2025-02-08 10:05:25,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 265. [2025-02-08 10:05:25,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 189 states have (on average 1.5502645502645502) internal successors, (293), 246 states have internal predecessors, (293), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2025-02-08 10:05:25,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 321 transitions. [2025-02-08 10:05:25,224 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 321 transitions. Word has length 50 [2025-02-08 10:05:25,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:05:25,224 INFO L471 AbstractCegarLoop]: Abstraction has 265 states and 321 transitions. [2025-02-08 10:05:25,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-08 10:05:25,224 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 321 transitions. [2025-02-08 10:05:25,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-02-08 10:05:25,225 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:05:25,225 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-02-08 10:05:25,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-02-08 10:05:25,225 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting func_to_recursive_line_25_to_33_0Err28ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-02-08 10:05:25,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:05:25,225 INFO L85 PathProgramCache]: Analyzing trace with hash 840441080, now seen corresponding path program 1 times [2025-02-08 10:05:25,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:05:25,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141713258] [2025-02-08 10:05:25,226 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:25,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:05:25,233 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-02-08 10:05:25,239 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-02-08 10:05:25,239 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:25,239 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:05:25,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1135332934] [2025-02-08 10:05:25,240 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:25,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:05:25,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:05:25,242 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) [2025-02-08 10:05:25,244 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 [2025-02-08 10:05:25,306 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-02-08 10:05:25,331 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-02-08 10:05:25,331 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:25,331 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:05:25,332 INFO L256 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-02-08 10:05:25,333 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:05:25,337 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 [2025-02-08 10:05:25,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 10:05:25,514 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:05:25,515 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:05:26,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:05:26,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141713258] [2025-02-08 10:05:26,741 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:05:26,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135332934] [2025-02-08 10:05:26,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135332934] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:05:26,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-02-08 10:05:26,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2025-02-08 10:05:26,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188555739] [2025-02-08 10:05:26,742 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-02-08 10:05:26,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-08 10:05:26,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:05:26,742 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-08 10:05:26,743 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=167, Unknown=1, NotChecked=0, Total=210 [2025-02-08 10:05:26,743 INFO L87 Difference]: Start difference. First operand 265 states and 321 transitions. Second operand has 10 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 10:05:27,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:05:27,005 INFO L93 Difference]: Finished difference Result 327 states and 360 transitions. [2025-02-08 10:05:27,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-08 10:05:27,005 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 50 [2025-02-08 10:05:27,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:05:27,006 INFO L225 Difference]: With dead ends: 327 [2025-02-08 10:05:27,006 INFO L226 Difference]: Without dead ends: 326 [2025-02-08 10:05:27,006 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=78, Invalid=263, Unknown=1, NotChecked=0, Total=342 [2025-02-08 10:05:27,006 INFO L435 NwaCegarLoop]: 117 mSDtfsCounter, 211 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 10:05:27,007 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 825 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 10:05:27,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2025-02-08 10:05:27,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 265. [2025-02-08 10:05:27,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 189 states have (on average 1.5449735449735449) internal successors, (292), 246 states have internal predecessors, (292), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2025-02-08 10:05:27,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 320 transitions. [2025-02-08 10:05:27,015 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 320 transitions. Word has length 50 [2025-02-08 10:05:27,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:05:27,015 INFO L471 AbstractCegarLoop]: Abstraction has 265 states and 320 transitions. [2025-02-08 10:05:27,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 10:05:27,015 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 320 transitions. [2025-02-08 10:05:27,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-02-08 10:05:27,015 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:05:27,016 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:05:27,025 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-02-08 10:05:27,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:05:27,220 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-02-08 10:05:27,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:05:27,221 INFO L85 PathProgramCache]: Analyzing trace with hash 312198662, now seen corresponding path program 1 times [2025-02-08 10:05:27,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:05:27,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312288413] [2025-02-08 10:05:27,221 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:27,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:05:27,227 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-02-08 10:05:27,238 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-02-08 10:05:27,239 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:27,239 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:05:27,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [630329317] [2025-02-08 10:05:27,241 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:27,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:05:27,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:05:27,248 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) [2025-02-08 10:05:27,253 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 [2025-02-08 10:05:27,327 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-02-08 10:05:27,347 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-02-08 10:05:27,347 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:27,347 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:05:27,348 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-08 10:05:27,349 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:05:27,351 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 [2025-02-08 10:05:27,402 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:05:27,402 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:05:27,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:05:27,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312288413] [2025-02-08 10:05:27,402 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:05:27,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630329317] [2025-02-08 10:05:27,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630329317] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:05:27,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:05:27,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 10:05:27,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982296754] [2025-02-08 10:05:27,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:05:27,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 10:05:27,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:05:27,403 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 10:05:27,403 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-08 10:05:27,404 INFO L87 Difference]: Start difference. First operand 265 states and 320 transitions. Second operand has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-08 10:05:27,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:05:27,556 INFO L93 Difference]: Finished difference Result 305 states and 359 transitions. [2025-02-08 10:05:27,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 10:05:27,556 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 51 [2025-02-08 10:05:27,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:05:27,558 INFO L225 Difference]: With dead ends: 305 [2025-02-08 10:05:27,558 INFO L226 Difference]: Without dead ends: 299 [2025-02-08 10:05:27,558 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-02-08 10:05:27,559 INFO L435 NwaCegarLoop]: 98 mSDtfsCounter, 130 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 13 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 10:05:27,559 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 445 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 158 Invalid, 7 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 10:05:27,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2025-02-08 10:05:27,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 271. [2025-02-08 10:05:27,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 195 states have (on average 1.528205128205128) internal successors, (298), 252 states have internal predecessors, (298), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2025-02-08 10:05:27,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 326 transitions. [2025-02-08 10:05:27,569 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 326 transitions. Word has length 51 [2025-02-08 10:05:27,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:05:27,569 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 326 transitions. [2025-02-08 10:05:27,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-08 10:05:27,570 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 326 transitions. [2025-02-08 10:05:27,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-02-08 10:05:27,570 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:05:27,570 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, 1, 1, 1, 1] [2025-02-08 10:05:27,580 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-02-08 10:05:27,770 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 [2025-02-08 10:05:27,771 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting func_to_recursive_line_25_to_33_0Err27ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-02-08 10:05:27,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:05:27,771 INFO L85 PathProgramCache]: Analyzing trace with hash 283869735, now seen corresponding path program 1 times [2025-02-08 10:05:27,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:05:27,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465394978] [2025-02-08 10:05:27,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:27,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:05:27,779 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-02-08 10:05:27,787 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-02-08 10:05:27,787 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:27,787 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:05:27,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1347111961] [2025-02-08 10:05:27,788 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:27,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:05:27,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:05:27,797 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) [2025-02-08 10:05:27,798 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 [2025-02-08 10:05:27,862 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-02-08 10:05:27,889 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-02-08 10:05:27,889 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:27,889 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:05:27,890 INFO L256 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-02-08 10:05:27,891 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:05:27,895 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 [2025-02-08 10:05:27,962 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 36 treesize of output 13 [2025-02-08 10:05:28,006 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 29 treesize of output 13 [2025-02-08 10:05:28,019 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:05:28,019 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:05:28,183 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:05:28,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:05:28,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465394978] [2025-02-08 10:05:28,183 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:05:28,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347111961] [2025-02-08 10:05:28,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347111961] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 10:05:28,183 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 10:05:28,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2025-02-08 10:05:28,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508945376] [2025-02-08 10:05:28,183 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 10:05:28,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-08 10:05:28,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:05:28,184 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-08 10:05:28,184 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2025-02-08 10:05:28,184 INFO L87 Difference]: Start difference. First operand 271 states and 326 transitions. Second operand has 17 states, 14 states have (on average 6.5) internal successors, (91), 14 states have internal predecessors, (91), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:05:28,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:05:28,895 INFO L93 Difference]: Finished difference Result 291 states and 346 transitions. [2025-02-08 10:05:28,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-08 10:05:28,895 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 6.5) internal successors, (91), 14 states have internal predecessors, (91), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 51 [2025-02-08 10:05:28,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:05:28,896 INFO L225 Difference]: With dead ends: 291 [2025-02-08 10:05:28,896 INFO L226 Difference]: Without dead ends: 290 [2025-02-08 10:05:28,897 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 81 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=159, Invalid=491, Unknown=0, NotChecked=0, Total=650 [2025-02-08 10:05:28,897 INFO L435 NwaCegarLoop]: 111 mSDtfsCounter, 415 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-08 10:05:28,897 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 914 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-08 10:05:28,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2025-02-08 10:05:28,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 270. [2025-02-08 10:05:28,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 195 states have (on average 1.5128205128205128) internal successors, (295), 251 states have internal predecessors, (295), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2025-02-08 10:05:28,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 323 transitions. [2025-02-08 10:05:28,904 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 323 transitions. Word has length 51 [2025-02-08 10:05:28,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:05:28,905 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 323 transitions. [2025-02-08 10:05:28,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 6.5) internal successors, (91), 14 states have internal predecessors, (91), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:05:28,905 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 323 transitions. [2025-02-08 10:05:28,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2025-02-08 10:05:28,905 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:05:28,905 INFO L218 NwaCegarLoop]: trace histogram [2, 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] [2025-02-08 10:05:28,915 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 [2025-02-08 10:05:29,106 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 [2025-02-08 10:05:29,106 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting func_to_recursive_line_25_to_33_0Err26ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-02-08 10:05:29,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:05:29,107 INFO L85 PathProgramCache]: Analyzing trace with hash 210027222, now seen corresponding path program 1 times [2025-02-08 10:05:29,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:05:29,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852646469] [2025-02-08 10:05:29,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:29,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:05:29,113 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 52 statements into 1 equivalence classes. [2025-02-08 10:05:29,121 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 52 of 52 statements. [2025-02-08 10:05:29,121 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:29,122 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:05:29,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [502740808] [2025-02-08 10:05:29,124 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:29,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:05:29,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:05:29,129 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) [2025-02-08 10:05:29,132 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 [2025-02-08 10:05:29,196 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 52 statements into 1 equivalence classes. [2025-02-08 10:05:29,241 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 52 of 52 statements. [2025-02-08 10:05:29,241 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:29,241 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:05:29,245 INFO L256 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 70 conjuncts are in the unsatisfiable core [2025-02-08 10:05:29,246 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:05:29,250 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 [2025-02-08 10:05:29,253 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 [2025-02-08 10:05:29,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 10:05:29,476 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 7 treesize of output 3 [2025-02-08 10:05:29,537 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:05:29,537 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:05:29,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:05:29,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852646469] [2025-02-08 10:05:29,810 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:05:29,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502740808] [2025-02-08 10:05:29,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502740808] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:05:29,810 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-02-08 10:05:29,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2025-02-08 10:05:29,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060113715] [2025-02-08 10:05:29,810 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-02-08 10:05:29,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-08 10:05:29,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:05:29,811 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-08 10:05:29,811 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2025-02-08 10:05:29,811 INFO L87 Difference]: Start difference. First operand 270 states and 323 transitions. Second operand has 14 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 10:05:30,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:05:30,148 INFO L93 Difference]: Finished difference Result 318 states and 350 transitions. [2025-02-08 10:05:30,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-08 10:05:30,148 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2025-02-08 10:05:30,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:05:30,149 INFO L225 Difference]: With dead ends: 318 [2025-02-08 10:05:30,149 INFO L226 Difference]: Without dead ends: 317 [2025-02-08 10:05:30,149 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2025-02-08 10:05:30,150 INFO L435 NwaCegarLoop]: 111 mSDtfsCounter, 224 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 10:05:30,150 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 811 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 10:05:30,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2025-02-08 10:05:30,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 270. [2025-02-08 10:05:30,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 195 states have (on average 1.5076923076923077) internal successors, (294), 251 states have internal predecessors, (294), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2025-02-08 10:05:30,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 322 transitions. [2025-02-08 10:05:30,160 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 322 transitions. Word has length 52 [2025-02-08 10:05:30,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:05:30,160 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 322 transitions. [2025-02-08 10:05:30,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 10:05:30,160 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 322 transitions. [2025-02-08 10:05:30,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-02-08 10:05:30,160 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:05:30,161 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 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] [2025-02-08 10:05:30,170 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-02-08 10:05:30,365 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 [2025-02-08 10:05:30,365 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting func_to_recursive_line_25_to_33_0Err25ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-02-08 10:05:30,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:05:30,366 INFO L85 PathProgramCache]: Analyzing trace with hash -2079090683, now seen corresponding path program 1 times [2025-02-08 10:05:30,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:05:30,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259311735] [2025-02-08 10:05:30,366 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:30,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:05:30,374 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-02-08 10:05:30,381 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-02-08 10:05:30,382 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:30,382 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:05:30,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [45746308] [2025-02-08 10:05:30,382 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:30,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:05:30,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:05:30,387 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) [2025-02-08 10:05:30,393 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 [2025-02-08 10:05:30,461 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-02-08 10:05:30,491 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-02-08 10:05:30,491 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:30,491 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:05:30,496 INFO L256 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-02-08 10:05:30,497 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:05:30,500 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 [2025-02-08 10:05:30,571 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 36 treesize of output 13 [2025-02-08 10:05:30,634 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 36 treesize of output 16 [2025-02-08 10:05:30,650 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:05:30,650 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:05:54,994 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 3 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:05:54,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:05:54,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259311735] [2025-02-08 10:05:54,995 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:05:54,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45746308] [2025-02-08 10:05:54,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45746308] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 10:05:54,995 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 10:05:54,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2025-02-08 10:05:54,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23125175] [2025-02-08 10:05:54,995 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 10:05:54,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-08 10:05:54,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:05:54,996 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-08 10:05:54,996 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=303, Unknown=6, NotChecked=0, Total=380 [2025-02-08 10:05:54,996 INFO L87 Difference]: Start difference. First operand 270 states and 322 transitions. Second operand has 20 states, 17 states have (on average 5.764705882352941) internal successors, (98), 17 states have internal predecessors, (98), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:05:56,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:05:56,404 INFO L93 Difference]: Finished difference Result 290 states and 342 transitions. [2025-02-08 10:05:56,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-02-08 10:05:56,405 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 5.764705882352941) internal successors, (98), 17 states have internal predecessors, (98), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 53 [2025-02-08 10:05:56,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:05:56,406 INFO L225 Difference]: With dead ends: 290 [2025-02-08 10:05:56,406 INFO L226 Difference]: Without dead ends: 289 [2025-02-08 10:05:56,406 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 83 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 24.5s TimeCoverageRelationStatistics Valid=224, Invalid=700, Unknown=6, NotChecked=0, Total=930 [2025-02-08 10:05:56,406 INFO L435 NwaCegarLoop]: 111 mSDtfsCounter, 375 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 656 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-02-08 10:05:56,406 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 1134 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 656 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-02-08 10:05:56,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2025-02-08 10:05:56,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 269. [2025-02-08 10:05:56,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 195 states have (on average 1.4923076923076923) internal successors, (291), 250 states have internal predecessors, (291), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2025-02-08 10:05:56,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 319 transitions. [2025-02-08 10:05:56,414 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 319 transitions. Word has length 53 [2025-02-08 10:05:56,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:05:56,414 INFO L471 AbstractCegarLoop]: Abstraction has 269 states and 319 transitions. [2025-02-08 10:05:56,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 5.764705882352941) internal successors, (98), 17 states have internal predecessors, (98), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:05:56,414 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 319 transitions. [2025-02-08 10:05:56,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2025-02-08 10:05:56,414 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:05:56,414 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 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] [2025-02-08 10:05:56,421 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-02-08 10:05:56,619 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 [2025-02-08 10:05:56,619 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting func_to_recursive_line_25_to_33_0Err24ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-02-08 10:05:56,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:05:56,620 INFO L85 PathProgramCache]: Analyzing trace with hash -27301708, now seen corresponding path program 1 times [2025-02-08 10:05:56,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:05:56,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162308584] [2025-02-08 10:05:56,620 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:56,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:05:56,627 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 54 statements into 1 equivalence classes. [2025-02-08 10:05:56,632 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 54 of 54 statements. [2025-02-08 10:05:56,632 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:56,633 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:05:56,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1927844158] [2025-02-08 10:05:56,633 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:56,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:05:56,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:05:56,638 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) [2025-02-08 10:05:56,644 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 [2025-02-08 10:05:56,710 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 54 statements into 1 equivalence classes. [2025-02-08 10:05:56,735 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 54 of 54 statements. [2025-02-08 10:05:56,735 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:56,735 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:05:56,736 INFO L256 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-02-08 10:05:56,738 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:05:56,740 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 [2025-02-08 10:05:56,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 10:05:56,877 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:05:56,877 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:05:57,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:05:57,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162308584] [2025-02-08 10:05:57,253 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:05:57,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927844158] [2025-02-08 10:05:57,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927844158] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:05:57,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-02-08 10:05:57,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2025-02-08 10:05:57,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827741186] [2025-02-08 10:05:57,254 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-02-08 10:05:57,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 10:05:57,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:05:57,255 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 10:05:57,255 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2025-02-08 10:05:57,255 INFO L87 Difference]: Start difference. First operand 269 states and 319 transitions. Second operand has 12 states, 10 states have (on average 5.0) internal successors, (50), 9 states have internal predecessors, (50), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 10:05:57,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:05:57,521 INFO L93 Difference]: Finished difference Result 315 states and 346 transitions. [2025-02-08 10:05:57,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-08 10:05:57,521 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 5.0) internal successors, (50), 9 states have internal predecessors, (50), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2025-02-08 10:05:57,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:05:57,522 INFO L225 Difference]: With dead ends: 315 [2025-02-08 10:05:57,522 INFO L226 Difference]: Without dead ends: 314 [2025-02-08 10:05:57,522 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=471, Unknown=0, NotChecked=0, Total=600 [2025-02-08 10:05:57,523 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 250 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 10:05:57,523 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 789 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 10:05:57,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2025-02-08 10:05:57,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 269. [2025-02-08 10:05:57,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 195 states have (on average 1.4871794871794872) internal successors, (290), 250 states have internal predecessors, (290), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2025-02-08 10:05:57,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 318 transitions. [2025-02-08 10:05:57,531 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 318 transitions. Word has length 54 [2025-02-08 10:05:57,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:05:57,532 INFO L471 AbstractCegarLoop]: Abstraction has 269 states and 318 transitions. [2025-02-08 10:05:57,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 5.0) internal successors, (50), 9 states have internal predecessors, (50), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 10:05:57,532 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 318 transitions. [2025-02-08 10:05:57,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2025-02-08 10:05:57,532 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:05:57,532 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 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] [2025-02-08 10:05:57,540 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-02-08 10:05:57,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2025-02-08 10:05:57,736 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting func_to_recursive_line_25_to_33_0Err23ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-02-08 10:05:57,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:05:57,736 INFO L85 PathProgramCache]: Analyzing trace with hash -846352925, now seen corresponding path program 1 times [2025-02-08 10:05:57,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:05:57,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335533734] [2025-02-08 10:05:57,736 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:57,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:05:57,744 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-02-08 10:05:57,749 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-02-08 10:05:57,749 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:57,749 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:05:57,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [286952717] [2025-02-08 10:05:57,750 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:57,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:05:57,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:05:57,754 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:05:57,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-02-08 10:05:57,825 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-02-08 10:05:57,850 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-02-08 10:05:57,850 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:57,850 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:05:57,851 INFO L256 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 75 conjuncts are in the unsatisfiable core [2025-02-08 10:05:57,853 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:05:57,855 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 [2025-02-08 10:05:57,858 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 [2025-02-08 10:05:57,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 10:05:58,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 10:05:58,192 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:05:58,192 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:05:58,589 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:05:58,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:05:58,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335533734] [2025-02-08 10:05:58,590 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:05:58,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286952717] [2025-02-08 10:05:58,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286952717] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 10:05:58,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 10:05:58,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 28 [2025-02-08 10:05:58,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398735649] [2025-02-08 10:05:58,590 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 10:05:58,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-02-08 10:05:58,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:05:58,591 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-02-08 10:05:58,591 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=711, Unknown=0, NotChecked=0, Total=812 [2025-02-08 10:05:58,591 INFO L87 Difference]: Start difference. First operand 269 states and 318 transitions. Second operand has 29 states, 26 states have (on average 3.923076923076923) internal successors, (102), 25 states have internal predecessors, (102), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:06:04,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2025-02-08 10:06:04,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:06:04,590 INFO L93 Difference]: Finished difference Result 313 states and 345 transitions. [2025-02-08 10:06:04,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-02-08 10:06:04,590 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 3.923076923076923) internal successors, (102), 25 states have internal predecessors, (102), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 55 [2025-02-08 10:06:04,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:06:04,591 INFO L225 Difference]: With dead ends: 313 [2025-02-08 10:06:04,591 INFO L226 Difference]: Without dead ends: 308 [2025-02-08 10:06:04,592 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=387, Invalid=2163, Unknown=0, NotChecked=0, Total=2550 [2025-02-08 10:06:04,592 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 680 mSDsluCounter, 1213 mSDsCounter, 0 mSdLazyCounter, 1219 mSolverCounterSat, 35 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 1303 SdHoareTripleChecker+Invalid, 1255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1219 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2025-02-08 10:06:04,592 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [681 Valid, 1303 Invalid, 1255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1219 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2025-02-08 10:06:04,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2025-02-08 10:06:04,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 266. [2025-02-08 10:06:04,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 195 states have (on average 1.4512820512820512) internal successors, (283), 247 states have internal predecessors, (283), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2025-02-08 10:06:04,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 311 transitions. [2025-02-08 10:06:04,603 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 311 transitions. Word has length 55 [2025-02-08 10:06:04,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:06:04,603 INFO L471 AbstractCegarLoop]: Abstraction has 266 states and 311 transitions. [2025-02-08 10:06:04,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 3.923076923076923) internal successors, (102), 25 states have internal predecessors, (102), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:06:04,604 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 311 transitions. [2025-02-08 10:06:04,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2025-02-08 10:06:04,604 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:06:04,604 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:06:04,614 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-02-08 10:06:04,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,24 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:06:04,808 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-02-08 10:06:04,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:06:04,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1494983104, now seen corresponding path program 1 times [2025-02-08 10:06:04,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:06:04,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219579366] [2025-02-08 10:06:04,809 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:06:04,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:06:04,819 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 57 statements into 1 equivalence classes. [2025-02-08 10:06:04,823 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 57 of 57 statements. [2025-02-08 10:06:04,824 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:06:04,824 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:06:04,935 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 10:06:04,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:06:04,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219579366] [2025-02-08 10:06:04,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219579366] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:06:04,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:06:04,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 10:06:04,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374624194] [2025-02-08 10:06:04,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:06:04,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 10:06:04,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:06:04,936 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 10:06:04,937 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 10:06:04,937 INFO L87 Difference]: Start difference. First operand 266 states and 311 transitions. Second operand has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-08 10:06:05,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:06:05,250 INFO L93 Difference]: Finished difference Result 289 states and 338 transitions. [2025-02-08 10:06:05,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 10:06:05,250 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 57 [2025-02-08 10:06:05,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:06:05,251 INFO L225 Difference]: With dead ends: 289 [2025-02-08 10:06:05,251 INFO L226 Difference]: Without dead ends: 288 [2025-02-08 10:06:05,251 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-08 10:06:05,252 INFO L435 NwaCegarLoop]: 108 mSDtfsCounter, 79 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 10:06:05,252 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 452 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 10:06:05,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2025-02-08 10:06:05,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 267. [2025-02-08 10:06:05,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 196 states have (on average 1.4489795918367347) internal successors, (284), 248 states have internal predecessors, (284), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2025-02-08 10:06:05,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 312 transitions. [2025-02-08 10:06:05,263 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 312 transitions. Word has length 57 [2025-02-08 10:06:05,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:06:05,264 INFO L471 AbstractCegarLoop]: Abstraction has 267 states and 312 transitions. [2025-02-08 10:06:05,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-08 10:06:05,267 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 312 transitions. [2025-02-08 10:06:05,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2025-02-08 10:06:05,268 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:06:05,268 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2025-02-08 10:06:05,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2025-02-08 10:06:05,268 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting func_to_recursive_line_25_to_33_0Err21ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-02-08 10:06:05,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:06:05,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1596341311, now seen corresponding path program 1 times [2025-02-08 10:06:05,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:06:05,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971398397] [2025-02-08 10:06:05,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:06:05,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:06:05,279 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 57 statements into 1 equivalence classes. [2025-02-08 10:06:05,283 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 57 of 57 statements. [2025-02-08 10:06:05,283 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:06:05,283 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:06:05,506 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:06:05,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:06:05,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971398397] [2025-02-08 10:06:05,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971398397] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:06:05,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729686319] [2025-02-08 10:06:05,507 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:06:05,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:06:05,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:06:05,512 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:06:05,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-02-08 10:06:05,600 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 57 statements into 1 equivalence classes. [2025-02-08 10:06:05,629 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 57 of 57 statements. [2025-02-08 10:06:05,629 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:06:05,629 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:06:05,630 INFO L256 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-08 10:06:05,632 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:06:05,775 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 38 treesize of output 15 [2025-02-08 10:06:05,830 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 [2025-02-08 10:06:05,858 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:06:05,858 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:06:06,091 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:06:06,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729686319] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 10:06:06,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 10:06:06,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 20 [2025-02-08 10:06:06,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493782826] [2025-02-08 10:06:06,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 10:06:06,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-02-08 10:06:06,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:06:06,092 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-02-08 10:06:06,092 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2025-02-08 10:06:06,092 INFO L87 Difference]: Start difference. First operand 267 states and 312 transitions. Second operand has 21 states, 19 states have (on average 7.578947368421052) internal successors, (144), 17 states have internal predecessors, (144), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 10:06:06,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:06:06,751 INFO L93 Difference]: Finished difference Result 285 states and 330 transitions. [2025-02-08 10:06:06,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-08 10:06:06,751 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 7.578947368421052) internal successors, (144), 17 states have internal predecessors, (144), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 57 [2025-02-08 10:06:06,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:06:06,752 INFO L225 Difference]: With dead ends: 285 [2025-02-08 10:06:06,752 INFO L226 Difference]: Without dead ends: 284 [2025-02-08 10:06:06,753 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 101 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2025-02-08 10:06:06,753 INFO L435 NwaCegarLoop]: 109 mSDtfsCounter, 410 mSDsluCounter, 1070 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-08 10:06:06,753 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 1179 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-08 10:06:06,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2025-02-08 10:06:06,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 266. [2025-02-08 10:06:06,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 196 states have (on average 1.433673469387755) internal successors, (281), 247 states have internal predecessors, (281), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2025-02-08 10:06:06,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 309 transitions. [2025-02-08 10:06:06,765 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 309 transitions. Word has length 57 [2025-02-08 10:06:06,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:06:06,765 INFO L471 AbstractCegarLoop]: Abstraction has 266 states and 309 transitions. [2025-02-08 10:06:06,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 7.578947368421052) internal successors, (144), 17 states have internal predecessors, (144), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 10:06:06,766 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 309 transitions. [2025-02-08 10:06:06,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-02-08 10:06:06,766 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:06:06,766 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:06:06,776 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-02-08 10:06:06,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2025-02-08 10:06:06,967 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-02-08 10:06:06,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:06:06,967 INFO L85 PathProgramCache]: Analyzing trace with hash -900163958, now seen corresponding path program 1 times [2025-02-08 10:06:06,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:06:06,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913781854] [2025-02-08 10:06:06,968 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:06:06,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:06:06,974 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-02-08 10:06:06,980 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-02-08 10:06:06,980 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:06:06,980 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:06:06,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [726882946] [2025-02-08 10:06:06,981 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:06:06,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:06:06,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:06:06,983 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:06:06,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-02-08 10:06:07,057 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-02-08 10:06:07,076 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-02-08 10:06:07,076 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:06:07,076 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:06:07,077 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-02-08 10:06:07,115 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:06:07,118 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 [2025-02-08 10:06:07,121 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 [2025-02-08 10:06:07,286 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:06:07,286 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:06:07,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:06:07,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913781854] [2025-02-08 10:06:07,286 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:06:07,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726882946] [2025-02-08 10:06:07,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726882946] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:06:07,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:06:07,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 10:06:07,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652420818] [2025-02-08 10:06:07,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:06:07,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 10:06:07,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:06:07,287 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 10:06:07,287 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-08 10:06:07,287 INFO L87 Difference]: Start difference. First operand 266 states and 309 transitions. Second operand has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-08 10:06:07,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:06:07,468 INFO L93 Difference]: Finished difference Result 292 states and 334 transitions. [2025-02-08 10:06:07,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 10:06:07,468 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 58 [2025-02-08 10:06:07,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:06:07,469 INFO L225 Difference]: With dead ends: 292 [2025-02-08 10:06:07,469 INFO L226 Difference]: Without dead ends: 291 [2025-02-08 10:06:07,469 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2025-02-08 10:06:07,470 INFO L435 NwaCegarLoop]: 93 mSDtfsCounter, 136 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 10:06:07,470 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 445 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 211 Invalid, 2 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 10:06:07,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2025-02-08 10:06:07,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 267. [2025-02-08 10:06:07,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 197 states have (on average 1.4314720812182742) internal successors, (282), 248 states have internal predecessors, (282), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2025-02-08 10:06:07,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 310 transitions. [2025-02-08 10:06:07,484 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 310 transitions. Word has length 58 [2025-02-08 10:06:07,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:06:07,484 INFO L471 AbstractCegarLoop]: Abstraction has 267 states and 310 transitions. [2025-02-08 10:06:07,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-08 10:06:07,484 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 310 transitions. [2025-02-08 10:06:07,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-02-08 10:06:07,485 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:06:07,485 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2025-02-08 10:06:07,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2025-02-08 10:06:07,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2025-02-08 10:06:07,686 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting func_to_recursive_line_25_to_33_0Err20ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-02-08 10:06:07,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:06:07,686 INFO L85 PathProgramCache]: Analyzing trace with hash 2053026928, now seen corresponding path program 1 times [2025-02-08 10:06:07,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:06:07,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874821908] [2025-02-08 10:06:07,687 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:06:07,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:06:07,697 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-02-08 10:06:07,700 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-02-08 10:06:07,700 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:06:07,700 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:06:07,867 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:06:07,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:06:07,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874821908] [2025-02-08 10:06:07,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874821908] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:06:07,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596747947] [2025-02-08 10:06:07,867 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:06:07,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:06:07,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:06:07,869 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:06:07,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-02-08 10:06:07,949 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-02-08 10:06:07,972 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-02-08 10:06:07,972 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:06:07,972 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:06:07,974 INFO L256 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-02-08 10:06:07,975 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:06:07,978 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 [2025-02-08 10:06:08,083 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 36 treesize of output 13 [2025-02-08 10:06:08,106 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 [2025-02-08 10:06:08,109 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:06:08,109 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:06:08,236 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:06:08,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596747947] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 10:06:08,236 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 10:06:08,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2025-02-08 10:06:08,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726043241] [2025-02-08 10:06:08,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 10:06:08,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-02-08 10:06:08,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:06:08,236 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-02-08 10:06:08,237 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2025-02-08 10:06:08,237 INFO L87 Difference]: Start difference. First operand 267 states and 310 transitions. Second operand has 21 states, 17 states have (on average 8.176470588235293) internal successors, (139), 16 states have internal predecessors, (139), 8 states have call successors, (8), 7 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 10:06:08,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:06:08,729 INFO L93 Difference]: Finished difference Result 329 states and 340 transitions. [2025-02-08 10:06:08,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-02-08 10:06:08,730 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 8.176470588235293) internal successors, (139), 16 states have internal predecessors, (139), 8 states have call successors, (8), 7 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 58 [2025-02-08 10:06:08,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:06:08,731 INFO L225 Difference]: With dead ends: 329 [2025-02-08 10:06:08,731 INFO L226 Difference]: Without dead ends: 328 [2025-02-08 10:06:08,731 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=174, Invalid=638, Unknown=0, NotChecked=0, Total=812 [2025-02-08 10:06:08,731 INFO L435 NwaCegarLoop]: 89 mSDtfsCounter, 451 mSDsluCounter, 1076 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 1165 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-08 10:06:08,731 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 1165 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-08 10:06:08,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2025-02-08 10:06:08,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 267. [2025-02-08 10:06:08,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 197 states have (on average 1.4213197969543148) internal successors, (280), 248 states have internal predecessors, (280), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2025-02-08 10:06:08,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 308 transitions. [2025-02-08 10:06:08,739 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 308 transitions. Word has length 58 [2025-02-08 10:06:08,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:06:08,740 INFO L471 AbstractCegarLoop]: Abstraction has 267 states and 308 transitions. [2025-02-08 10:06:08,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 8.176470588235293) internal successors, (139), 16 states have internal predecessors, (139), 8 states have call successors, (8), 7 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 10:06:08,740 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 308 transitions. [2025-02-08 10:06:08,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-02-08 10:06:08,740 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:06:08,740 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:06:08,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2025-02-08 10:06:08,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2025-02-08 10:06:08,941 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-02-08 10:06:08,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:06:08,941 INFO L85 PathProgramCache]: Analyzing trace with hash -2135278850, now seen corresponding path program 1 times [2025-02-08 10:06:08,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:06:08,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312527057] [2025-02-08 10:06:08,942 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:06:08,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:06:08,950 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-02-08 10:06:08,956 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-02-08 10:06:08,957 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:06:08,957 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:06:09,020 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 10:06:09,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:06:09,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312527057] [2025-02-08 10:06:09,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312527057] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:06:09,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:06:09,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 10:06:09,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002166281] [2025-02-08 10:06:09,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:06:09,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 10:06:09,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:06:09,022 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 10:06:09,022 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 10:06:09,022 INFO L87 Difference]: Start difference. First operand 267 states and 308 transitions. Second operand has 5 states, 4 states have (on average 12.5) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-08 10:06:09,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:06:09,129 INFO L93 Difference]: Finished difference Result 289 states and 331 transitions. [2025-02-08 10:06:09,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 10:06:09,129 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 12.5) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 59 [2025-02-08 10:06:09,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:06:09,130 INFO L225 Difference]: With dead ends: 289 [2025-02-08 10:06:09,130 INFO L226 Difference]: Without dead ends: 283 [2025-02-08 10:06:09,130 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-08 10:06:09,130 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 49 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 10:06:09,130 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 326 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 10:06:09,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2025-02-08 10:06:09,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 273. [2025-02-08 10:06:09,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 203 states have (on average 1.4088669950738917) internal successors, (286), 254 states have internal predecessors, (286), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2025-02-08 10:06:09,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 314 transitions. [2025-02-08 10:06:09,140 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 314 transitions. Word has length 59 [2025-02-08 10:06:09,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:06:09,140 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 314 transitions. [2025-02-08 10:06:09,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 12.5) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-08 10:06:09,140 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 314 transitions. [2025-02-08 10:06:09,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-02-08 10:06:09,141 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:06:09,141 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2025-02-08 10:06:09,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2025-02-08 10:06:09,142 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting func_to_recursive_line_25_to_33_0Err19ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-02-08 10:06:09,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:06:09,142 INFO L85 PathProgramCache]: Analyzing trace with hash -780674657, now seen corresponding path program 1 times [2025-02-08 10:06:09,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:06:09,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928335295] [2025-02-08 10:06:09,142 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:06:09,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:06:09,150 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-02-08 10:06:09,155 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-02-08 10:06:09,155 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:06:09,155 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:06:09,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1344282673] [2025-02-08 10:06:09,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:06:09,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:06:09,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:06:09,158 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:06:09,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-02-08 10:06:09,236 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-02-08 10:06:09,261 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-02-08 10:06:09,261 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:06:09,261 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:06:09,262 INFO L256 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-02-08 10:06:09,264 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:06:09,267 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 [2025-02-08 10:06:09,341 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 36 treesize of output 13 [2025-02-08 10:06:09,387 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 [2025-02-08 10:06:09,398 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:06:09,398 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:06:09,557 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:06:09,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:06:09,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928335295] [2025-02-08 10:06:09,557 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:06:09,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344282673] [2025-02-08 10:06:09,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344282673] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 10:06:09,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 10:06:09,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2025-02-08 10:06:09,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810595049] [2025-02-08 10:06:09,557 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 10:06:09,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-08 10:06:09,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:06:09,559 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-08 10:06:09,561 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2025-02-08 10:06:09,561 INFO L87 Difference]: Start difference. First operand 273 states and 314 transitions. Second operand has 17 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 states have internal predecessors, (99), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:06:10,925 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2025-02-08 10:06:12,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:06:12,293 INFO L93 Difference]: Finished difference Result 277 states and 318 transitions. [2025-02-08 10:06:12,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-08 10:06:12,293 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 states have internal predecessors, (99), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 59 [2025-02-08 10:06:12,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:06:12,294 INFO L225 Difference]: With dead ends: 277 [2025-02-08 10:06:12,294 INFO L226 Difference]: Without dead ends: 276 [2025-02-08 10:06:12,295 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 97 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=159, Invalid=491, Unknown=0, NotChecked=0, Total=650 [2025-02-08 10:06:12,295 INFO L435 NwaCegarLoop]: 109 mSDtfsCounter, 328 mSDsluCounter, 938 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-02-08 10:06:12,295 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 1047 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 582 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2025-02-08 10:06:12,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2025-02-08 10:06:12,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 272. [2025-02-08 10:06:12,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 203 states have (on average 1.3940886699507389) internal successors, (283), 253 states have internal predecessors, (283), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2025-02-08 10:06:12,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 311 transitions. [2025-02-08 10:06:12,305 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 311 transitions. Word has length 59 [2025-02-08 10:06:12,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:06:12,305 INFO L471 AbstractCegarLoop]: Abstraction has 272 states and 311 transitions. [2025-02-08 10:06:12,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 states have internal predecessors, (99), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:06:12,305 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 311 transitions. [2025-02-08 10:06:12,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-02-08 10:06:12,306 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:06:12,306 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2025-02-08 10:06:12,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2025-02-08 10:06:12,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2025-02-08 10:06:12,510 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting func_to_recursive_line_25_to_33_0Err18ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-02-08 10:06:12,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:06:12,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1568889422, now seen corresponding path program 1 times [2025-02-08 10:06:12,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:06:12,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861617458] [2025-02-08 10:06:12,511 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:06:12,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:06:12,519 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-02-08 10:06:12,524 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-02-08 10:06:12,524 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:06:12,524 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:06:12,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1664586065] [2025-02-08 10:06:12,525 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:06:12,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:06:12,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:06:12,527 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:06:12,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-02-08 10:06:12,605 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-02-08 10:06:12,630 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-02-08 10:06:12,630 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:06:12,630 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:06:12,631 INFO L256 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-02-08 10:06:12,633 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:06:12,636 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 [2025-02-08 10:06:12,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 10:06:12,761 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:06:12,761 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:06:16,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:06:16,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861617458] [2025-02-08 10:06:16,735 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:06:16,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664586065] [2025-02-08 10:06:16,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664586065] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:06:16,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-02-08 10:06:16,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2025-02-08 10:06:16,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022076163] [2025-02-08 10:06:16,735 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-02-08 10:06:16,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-08 10:06:16,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:06:16,735 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-08 10:06:16,736 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=221, Unknown=1, NotChecked=0, Total=272 [2025-02-08 10:06:16,736 INFO L87 Difference]: Start difference. First operand 272 states and 311 transitions. Second operand has 11 states, 9 states have (on average 6.222222222222222) internal successors, (56), 8 states have internal predecessors, (56), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 10:06:17,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:06:17,033 INFO L93 Difference]: Finished difference Result 295 states and 322 transitions. [2025-02-08 10:06:17,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-08 10:06:17,034 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 6.222222222222222) internal successors, (56), 8 states have internal predecessors, (56), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 60 [2025-02-08 10:06:17,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:06:17,034 INFO L225 Difference]: With dead ends: 295 [2025-02-08 10:06:17,034 INFO L226 Difference]: Without dead ends: 294 [2025-02-08 10:06:17,035 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=99, Invalid=362, Unknown=1, NotChecked=0, Total=462 [2025-02-08 10:06:17,035 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 162 mSDsluCounter, 734 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 849 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 10:06:17,035 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 849 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 10:06:17,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2025-02-08 10:06:17,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 272. [2025-02-08 10:06:17,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 203 states have (on average 1.3891625615763548) internal successors, (282), 253 states have internal predecessors, (282), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2025-02-08 10:06:17,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 310 transitions. [2025-02-08 10:06:17,047 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 310 transitions. Word has length 60 [2025-02-08 10:06:17,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:06:17,047 INFO L471 AbstractCegarLoop]: Abstraction has 272 states and 310 transitions. [2025-02-08 10:06:17,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 6.222222222222222) internal successors, (56), 8 states have internal predecessors, (56), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 10:06:17,047 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 310 transitions. [2025-02-08 10:06:17,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-02-08 10:06:17,048 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:06:17,048 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2025-02-08 10:06:17,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2025-02-08 10:06:17,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2025-02-08 10:06:17,252 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting func_to_recursive_line_25_to_33_0Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-02-08 10:06:17,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:06:17,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1390931837, now seen corresponding path program 1 times [2025-02-08 10:06:17,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:06:17,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062353977] [2025-02-08 10:06:17,252 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:06:17,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:06:17,262 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-02-08 10:06:17,269 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-02-08 10:06:17,269 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:06:17,269 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:06:17,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [895630692] [2025-02-08 10:06:17,270 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:06:17,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:06:17,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:06:17,272 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:06:17,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2025-02-08 10:06:17,369 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-02-08 10:06:17,396 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-02-08 10:06:17,396 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:06:17,396 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:06:17,397 INFO L256 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-02-08 10:06:17,399 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:06:17,402 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 [2025-02-08 10:06:17,473 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 36 treesize of output 13 [2025-02-08 10:06:17,539 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 29 treesize of output 13 [2025-02-08 10:06:17,553 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:06:17,553 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:06:37,993 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 5 refuted. 11 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:06:37,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:06:37,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062353977] [2025-02-08 10:06:37,994 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:06:37,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895630692] [2025-02-08 10:06:37,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895630692] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 10:06:37,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 10:06:37,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2025-02-08 10:06:37,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427297851] [2025-02-08 10:06:37,994 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 10:06:37,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-08 10:06:37,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:06:37,995 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-08 10:06:37,995 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=304, Unknown=5, NotChecked=0, Total=380 [2025-02-08 10:06:37,995 INFO L87 Difference]: Start difference. First operand 272 states and 310 transitions. Second operand has 20 states, 17 states have (on average 6.705882352941177) internal successors, (114), 17 states have internal predecessors, (114), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:06:38,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:06:38,859 INFO L93 Difference]: Finished difference Result 276 states and 314 transitions. [2025-02-08 10:06:38,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-02-08 10:06:38,859 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 6.705882352941177) internal successors, (114), 17 states have internal predecessors, (114), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 61 [2025-02-08 10:06:38,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:06:38,860 INFO L225 Difference]: With dead ends: 276 [2025-02-08 10:06:38,860 INFO L226 Difference]: Without dead ends: 275 [2025-02-08 10:06:38,860 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 99 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 20.5s TimeCoverageRelationStatistics Valid=224, Invalid=701, Unknown=5, NotChecked=0, Total=930 [2025-02-08 10:06:38,863 INFO L435 NwaCegarLoop]: 109 mSDtfsCounter, 401 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-08 10:06:38,863 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 944 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-08 10:06:38,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2025-02-08 10:06:38,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 271. [2025-02-08 10:06:38,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 203 states have (on average 1.374384236453202) internal successors, (279), 252 states have internal predecessors, (279), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2025-02-08 10:06:38,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 307 transitions. [2025-02-08 10:06:38,871 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 307 transitions. Word has length 61 [2025-02-08 10:06:38,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:06:38,871 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 307 transitions. [2025-02-08 10:06:38,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 6.705882352941177) internal successors, (114), 17 states have internal predecessors, (114), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:06:38,872 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 307 transitions. [2025-02-08 10:06:38,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-02-08 10:06:38,872 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:06:38,872 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2025-02-08 10:06:38,879 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2025-02-08 10:06:39,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,30 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:06:39,073 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting func_to_recursive_line_25_to_33_0Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-02-08 10:06:39,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:06:39,073 INFO L85 PathProgramCache]: Analyzing trace with hash 169213996, now seen corresponding path program 1 times [2025-02-08 10:06:39,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:06:39,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189355454] [2025-02-08 10:06:39,073 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:06:39,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:06:39,081 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-02-08 10:06:39,092 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-02-08 10:06:39,092 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:06:39,092 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:06:39,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [979367145] [2025-02-08 10:06:39,093 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:06:39,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:06:39,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:06:39,096 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:06:39,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2025-02-08 10:06:39,185 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-02-08 10:06:39,216 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-02-08 10:06:39,216 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:06:39,216 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:06:39,217 INFO L256 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 43 conjuncts are in the unsatisfiable core [2025-02-08 10:06:39,219 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:06:39,221 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 [2025-02-08 10:06:39,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 10:06:39,493 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:06:39,493 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:06:40,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:06:40,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189355454] [2025-02-08 10:06:40,121 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:06:40,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979367145] [2025-02-08 10:06:40,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979367145] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:06:40,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-02-08 10:06:40,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2025-02-08 10:06:40,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127210168] [2025-02-08 10:06:40,121 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-02-08 10:06:40,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-08 10:06:40,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:06:40,123 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-08 10:06:40,123 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2025-02-08 10:06:40,123 INFO L87 Difference]: Start difference. First operand 271 states and 307 transitions. Second operand has 14 states, 12 states have (on average 4.833333333333333) internal successors, (58), 10 states have internal predecessors, (58), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 10:06:40,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:06:40,438 INFO L93 Difference]: Finished difference Result 292 states and 318 transitions. [2025-02-08 10:06:40,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-08 10:06:40,438 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 4.833333333333333) internal successors, (58), 10 states have internal predecessors, (58), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2025-02-08 10:06:40,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:06:40,439 INFO L225 Difference]: With dead ends: 292 [2025-02-08 10:06:40,439 INFO L226 Difference]: Without dead ends: 291 [2025-02-08 10:06:40,443 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=136, Invalid=566, Unknown=0, NotChecked=0, Total=702 [2025-02-08 10:06:40,443 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 165 mSDsluCounter, 770 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 10:06:40,443 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 885 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 10:06:40,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2025-02-08 10:06:40,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 271. [2025-02-08 10:06:40,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 203 states have (on average 1.3694581280788178) internal successors, (278), 252 states have internal predecessors, (278), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2025-02-08 10:06:40,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 306 transitions. [2025-02-08 10:06:40,464 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 306 transitions. Word has length 62 [2025-02-08 10:06:40,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:06:40,464 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 306 transitions. [2025-02-08 10:06:40,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 4.833333333333333) internal successors, (58), 10 states have internal predecessors, (58), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 10:06:40,465 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 306 transitions. [2025-02-08 10:06:40,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-02-08 10:06:40,465 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:06:40,465 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2025-02-08 10:06:40,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2025-02-08 10:06:40,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2025-02-08 10:06:40,665 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting func_to_recursive_line_25_to_33_0Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-02-08 10:06:40,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:06:40,667 INFO L85 PathProgramCache]: Analyzing trace with hash 950666587, now seen corresponding path program 1 times [2025-02-08 10:06:40,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:06:40,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359223688] [2025-02-08 10:06:40,668 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:06:40,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:06:40,681 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-02-08 10:06:40,695 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-02-08 10:06:40,695 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:06:40,695 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:06:40,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1334618526] [2025-02-08 10:06:40,696 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:06:40,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:06:40,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:06:40,700 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:06:40,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2025-02-08 10:06:40,784 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-02-08 10:06:40,811 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-02-08 10:06:40,811 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:06:40,811 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:06:40,813 INFO L256 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 80 conjuncts are in the unsatisfiable core [2025-02-08 10:06:40,815 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:06:40,817 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 [2025-02-08 10:06:40,820 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 [2025-02-08 10:06:40,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 10:06:41,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 10:06:41,374 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:06:41,374 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:06:44,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:06:44,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359223688] [2025-02-08 10:06:44,946 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:06:44,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334618526] [2025-02-08 10:06:44,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334618526] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:06:44,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-02-08 10:06:44,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2025-02-08 10:06:44,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417429548] [2025-02-08 10:06:44,946 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-02-08 10:06:44,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-08 10:06:44,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:06:44,947 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-08 10:06:44,947 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=925, Unknown=0, NotChecked=0, Total=1056 [2025-02-08 10:06:44,947 INFO L87 Difference]: Start difference. First operand 271 states and 306 transitions. Second operand has 19 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 16 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 10:06:45,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:06:45,707 INFO L93 Difference]: Finished difference Result 291 states and 317 transitions. [2025-02-08 10:06:45,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-02-08 10:06:45,708 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 16 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 63 [2025-02-08 10:06:45,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:06:45,709 INFO L225 Difference]: With dead ends: 291 [2025-02-08 10:06:45,709 INFO L226 Difference]: Without dead ends: 290 [2025-02-08 10:06:45,709 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=292, Invalid=1514, Unknown=0, NotChecked=0, Total=1806 [2025-02-08 10:06:45,710 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 174 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-08 10:06:45,710 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 948 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 666 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-08 10:06:45,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2025-02-08 10:06:45,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 271. [2025-02-08 10:06:45,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 203 states have (on average 1.3645320197044335) internal successors, (277), 252 states have internal predecessors, (277), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2025-02-08 10:06:45,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 305 transitions. [2025-02-08 10:06:45,720 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 305 transitions. Word has length 63 [2025-02-08 10:06:45,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:06:45,722 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 305 transitions. [2025-02-08 10:06:45,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 16 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 10:06:45,722 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 305 transitions. [2025-02-08 10:06:45,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-02-08 10:06:45,722 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:06:45,722 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2025-02-08 10:06:45,731 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2025-02-08 10:06:45,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,32 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:06:45,927 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting func_to_recursive_line_25_to_33_0Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-02-08 10:06:45,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:06:45,928 INFO L85 PathProgramCache]: Analyzing trace with hash -594106870, now seen corresponding path program 1 times [2025-02-08 10:06:45,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:06:45,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093819457] [2025-02-08 10:06:45,928 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:06:45,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:06:45,935 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-02-08 10:06:45,940 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-02-08 10:06:45,941 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:06:45,941 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:06:45,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [600122685] [2025-02-08 10:06:45,942 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:06:45,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:06:45,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:06:45,944 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:06:45,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2025-02-08 10:06:46,036 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-02-08 10:06:46,061 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-02-08 10:06:46,061 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:06:46,061 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:06:46,067 INFO L256 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 81 conjuncts are in the unsatisfiable core [2025-02-08 10:06:46,069 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:06:46,071 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 [2025-02-08 10:06:46,073 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 [2025-02-08 10:06:46,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 10:06:46,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 10:06:46,802 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:06:46,802 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:06:47,516 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:06:47,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:06:47,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093819457] [2025-02-08 10:06:47,516 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:06:47,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600122685] [2025-02-08 10:06:47,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600122685] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 10:06:47,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 10:06:47,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 34 [2025-02-08 10:06:47,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809290301] [2025-02-08 10:06:47,517 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 10:06:47,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2025-02-08 10:06:47,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:06:47,517 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2025-02-08 10:06:47,518 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1045, Unknown=0, NotChecked=0, Total=1190 [2025-02-08 10:06:47,518 INFO L87 Difference]: Start difference. First operand 271 states and 305 transitions. Second operand has 35 states, 32 states have (on average 3.75) internal successors, (120), 31 states have internal predecessors, (120), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)