./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_hard2.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_hard2.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 8571897e57404ad6e85df2c29745d5b56fa4d168673d3bc7c670c79b03a6c106 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 10:04:40,067 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 10:04:40,147 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 10:04:40,157 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 10:04:40,160 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 10:04:40,185 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 10:04:40,186 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 10:04:40,186 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 10:04:40,186 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 10:04:40,186 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 10:04:40,187 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 10:04:40,187 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 10:04:40,187 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 10:04:40,187 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 10:04:40,187 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 10:04:40,187 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 10:04:40,188 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 10:04:40,188 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 10:04:40,188 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 10:04:40,188 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 10:04:40,188 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 10:04:40,188 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 10:04:40,188 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 10:04:40,188 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 10:04:40,188 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 10:04:40,189 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 10:04:40,189 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 10:04:40,189 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 10:04:40,189 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 10:04:40,189 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 10:04:40,189 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 10:04:40,189 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 10:04:40,189 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 10:04:40,189 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 10:04:40,189 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 10:04:40,189 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 10:04:40,189 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 10:04:40,189 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 10:04:40,190 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 10:04:40,190 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 10:04:40,190 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 10:04:40,190 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 10:04:40,190 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 10:04:40,190 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 10:04:40,190 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 10:04:40,190 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 -> 8571897e57404ad6e85df2c29745d5b56fa4d168673d3bc7c670c79b03a6c106 [2025-02-08 10:04:40,478 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 10:04:40,487 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 10:04:40,489 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 10:04:40,491 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 10:04:40,491 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 10:04:40,493 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_nla-digbench/recursified_hard2.c [2025-02-08 10:04:41,826 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9b1c9fc4e/dd7b89154de54358aa68a9a9e3de472e/FLAG07f418b57 [2025-02-08 10:04:42,131 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 10:04:42,131 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_hard2.c [2025-02-08 10:04:42,140 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9b1c9fc4e/dd7b89154de54358aa68a9a9e3de472e/FLAG07f418b57 [2025-02-08 10:04:42,397 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9b1c9fc4e/dd7b89154de54358aa68a9a9e3de472e [2025-02-08 10:04:42,399 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 10:04:42,400 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 10:04:42,401 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 10:04:42,401 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 10:04:42,404 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 10:04:42,405 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 10:04:42" (1/1) ... [2025-02-08 10:04:42,406 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a6bd3ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:04:42, skipping insertion in model container [2025-02-08 10:04:42,406 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 10:04:42" (1/1) ... [2025-02-08 10:04:42,419 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 10:04:42,581 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 10:04:42,592 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 10:04:42,618 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 10:04:42,634 INFO L204 MainTranslator]: Completed translation [2025-02-08 10:04:42,635 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:04:42 WrapperNode [2025-02-08 10:04:42,635 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 10:04:42,636 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 10:04:42,636 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 10:04:42,636 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 10:04:42,641 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:04:42" (1/1) ... [2025-02-08 10:04:42,647 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:04:42" (1/1) ... [2025-02-08 10:04:42,664 INFO L138 Inliner]: procedures = 17, calls = 91, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 88 [2025-02-08 10:04:42,667 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 10:04:42,668 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 10:04:42,668 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 10:04:42,668 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 10:04:42,675 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:04:42" (1/1) ... [2025-02-08 10:04:42,676 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:04:42" (1/1) ... [2025-02-08 10:04:42,682 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:04:42" (1/1) ... [2025-02-08 10:04:42,708 INFO L175 MemorySlicer]: Split 56 memory accesses to 8 slices as follows [2, 8, 9, 8, 6, 5, 6, 12]. 21 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8, 0, 0, 0, 0, 0, 0]. The 12 writes are split as follows [0, 0, 3, 2, 1, 1, 2, 3]. [2025-02-08 10:04:42,711 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:04:42" (1/1) ... [2025-02-08 10:04:42,711 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:04:42" (1/1) ... [2025-02-08 10:04:42,722 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:04:42" (1/1) ... [2025-02-08 10:04:42,726 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:04:42" (1/1) ... [2025-02-08 10:04:42,728 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:04:42" (1/1) ... [2025-02-08 10:04:42,729 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:04:42" (1/1) ... [2025-02-08 10:04:42,734 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 10:04:42,735 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 10:04:42,735 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 10:04:42,735 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 10:04:42,736 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:04:42" (1/1) ... [2025-02-08 10:04:42,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 10:04:42,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:04:42,777 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 10:04:42,780 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 10:04:42,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 10:04:42,804 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_40_to_50_0 [2025-02-08 10:04:42,804 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_40_to_50_0 [2025-02-08 10:04:42,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 10:04:42,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 10:04:42,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-08 10:04:42,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-08 10:04:42,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-02-08 10:04:42,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-02-08 10:04:42,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-02-08 10:04:42,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-02-08 10:04:42,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-08 10:04:42,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 10:04:42,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 10:04:42,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-08 10:04:42,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-02-08 10:04:42,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-02-08 10:04:42,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-02-08 10:04:42,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-02-08 10:04:42,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2025-02-08 10:04:42,806 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_30_to_37_0 [2025-02-08 10:04:42,806 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_30_to_37_0 [2025-02-08 10:04:42,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 10:04:42,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 10:04:42,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 10:04:42,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 10:04:42,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-08 10:04:42,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-02-08 10:04:42,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-02-08 10:04:42,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-02-08 10:04:42,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-02-08 10:04:42,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2025-02-08 10:04:42,807 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-08 10:04:42,807 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-08 10:04:42,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 10:04:42,922 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 10:04:42,924 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 10:04:43,246 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L110: call ULTIMATE.dealloc(main_~#A~0#1.base, main_~#A~0#1.offset);havoc main_~#A~0#1.base, main_~#A~0#1.offset;call ULTIMATE.dealloc(main_~#B~0#1.base, main_~#B~0#1.offset);havoc main_~#B~0#1.base, main_~#B~0#1.offset;call ULTIMATE.dealloc(main_~#r~0#1.base, main_~#r~0#1.offset);havoc main_~#r~0#1.base, main_~#r~0#1.offset;call ULTIMATE.dealloc(main_~#d~0#1.base, main_~#d~0#1.offset);havoc main_~#d~0#1.base, main_~#d~0#1.offset;call ULTIMATE.dealloc(main_~#p~0#1.base, main_~#p~0#1.offset);havoc main_~#p~0#1.base, main_~#p~0#1.offset;call ULTIMATE.dealloc(main_~#q~0#1.base, main_~#q~0#1.offset);havoc main_~#q~0#1.base, main_~#q~0#1.offset; [2025-02-08 10:04:43,274 INFO L? ?]: Removed 52 outVars from TransFormulas that were not future-live. [2025-02-08 10:04:43,275 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 10:04:43,285 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 10:04:43,287 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 10:04:43,287 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 10:04:43 BoogieIcfgContainer [2025-02-08 10:04:43,288 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 10:04:43,290 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 10:04:43,290 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 10:04:43,294 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 10:04:43,294 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 10:04:42" (1/3) ... [2025-02-08 10:04:43,295 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50e970b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 10:04:43, skipping insertion in model container [2025-02-08 10:04:43,296 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:04:42" (2/3) ... [2025-02-08 10:04:43,296 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50e970b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 10:04:43, skipping insertion in model container [2025-02-08 10:04:43,296 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 10:04:43" (3/3) ... [2025-02-08 10:04:43,297 INFO L128 eAbstractionObserver]: Analyzing ICFG recursified_hard2.c [2025-02-08 10:04:43,311 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 10:04:43,313 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG recursified_hard2.c that has 4 procedures, 86 locations, 1 initial locations, 0 loop locations, and 24 error locations. [2025-02-08 10:04:43,359 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 10:04:43,369 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;@1af18410, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 10:04:43,369 INFO L334 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2025-02-08 10:04:43,373 INFO L276 IsEmpty]: Start isEmpty. Operand has 86 states, 47 states have (on average 1.6382978723404256) internal successors, (77), 73 states have internal predecessors, (77), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2025-02-08 10:04:43,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-02-08 10:04:43,378 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:04:43,379 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:04:43,379 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_40_to_50_0Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-08 10:04:43,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:04:43,384 INFO L85 PathProgramCache]: Analyzing trace with hash -2131432640, now seen corresponding path program 1 times [2025-02-08 10:04:43,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:04:43,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556534608] [2025-02-08 10:04:43,395 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:04:43,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:04:43,472 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 10:04:43,512 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 10:04:43,512 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:04:43,512 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:04:43,590 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 10:04:43,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:04:43,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556534608] [2025-02-08 10:04:43,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556534608] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:04:43,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:04:43,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 10:04:43,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162184561] [2025-02-08 10:04:43,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:04:43,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-08 10:04:43,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:04:43,617 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-08 10:04:43,617 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-08 10:04:43,619 INFO L87 Difference]: Start difference. First operand has 86 states, 47 states have (on average 1.6382978723404256) internal successors, (77), 73 states have internal predecessors, (77), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 10:04:43,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:04:43,643 INFO L93 Difference]: Finished difference Result 170 states and 206 transitions. [2025-02-08 10:04:43,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-08 10:04:43,644 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 10 [2025-02-08 10:04:43,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:04:43,649 INFO L225 Difference]: With dead ends: 170 [2025-02-08 10:04:43,649 INFO L226 Difference]: Without dead ends: 79 [2025-02-08 10:04:43,652 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-08 10:04:43,654 INFO L435 NwaCegarLoop]: 96 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 10:04:43,654 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 10:04:43,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2025-02-08 10:04:43,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2025-02-08 10:04:43,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 43 states have (on average 1.6046511627906976) internal successors, (69), 68 states have internal predecessors, (69), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-08 10:04:43,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 87 transitions. [2025-02-08 10:04:43,687 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 87 transitions. Word has length 10 [2025-02-08 10:04:43,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:04:43,687 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 87 transitions. [2025-02-08 10:04:43,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 10:04:43,687 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 87 transitions. [2025-02-08 10:04:43,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-02-08 10:04:43,688 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:04:43,688 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:04:43,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 10:04:43,689 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_30_to_37_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-08 10:04:43,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:04:43,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1309454960, now seen corresponding path program 1 times [2025-02-08 10:04:43,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:04:43,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065298438] [2025-02-08 10:04:43,690 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:04:43,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:04:43,713 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-08 10:04:43,759 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 10:04:43,760 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:04:43,760 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:04:43,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1647291369] [2025-02-08 10:04:43,764 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:04:43,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:04:43,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:04:43,767 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 10:04:43,768 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 10:04:43,857 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-08 10:04:43,906 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 10:04:43,907 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:04:43,907 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:04:43,919 INFO L256 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-02-08 10:04:43,926 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:04:43,982 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 10:04:43,990 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 10:04:44,250 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 10:04:44,268 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 10:04:44,268 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:04:44,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:04:44,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065298438] [2025-02-08 10:04:44,269 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:04:44,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647291369] [2025-02-08 10:04:44,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647291369] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:04:44,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:04:44,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 10:04:44,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147969349] [2025-02-08 10:04:44,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:04:44,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 10:04:44,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:04:44,272 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 10:04:44,272 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-02-08 10:04:44,273 INFO L87 Difference]: Start difference. First operand 79 states and 87 transitions. Second operand has 7 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 10:04:44,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:04:44,517 INFO L93 Difference]: Finished difference Result 145 states and 159 transitions. [2025-02-08 10:04:44,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 10:04:44,518 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2025-02-08 10:04:44,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:04:44,520 INFO L225 Difference]: With dead ends: 145 [2025-02-08 10:04:44,521 INFO L226 Difference]: Without dead ends: 144 [2025-02-08 10:04:44,521 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2025-02-08 10:04:44,522 INFO L435 NwaCegarLoop]: 70 mSDtfsCounter, 74 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 10:04:44,522 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 401 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 10:04:44,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2025-02-08 10:04:44,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 112. [2025-02-08 10:04:44,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 67 states have (on average 1.5223880597014925) internal successors, (102), 92 states have internal predecessors, (102), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (17), 15 states have call predecessors, (17), 15 states have call successors, (17) [2025-02-08 10:04:44,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 134 transitions. [2025-02-08 10:04:44,547 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 134 transitions. Word has length 17 [2025-02-08 10:04:44,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:04:44,548 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 134 transitions. [2025-02-08 10:04:44,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 10:04:44,548 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 134 transitions. [2025-02-08 10:04:44,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-02-08 10:04:44,548 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:04:44,548 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:04:44,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-08 10:04:44,749 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 10:04:44,750 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_30_to_37_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-08 10:04:44,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:04:44,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1938398124, now seen corresponding path program 1 times [2025-02-08 10:04:44,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:04:44,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049038595] [2025-02-08 10:04:44,751 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:04:44,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:04:44,767 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-08 10:04:44,786 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 10:04:44,786 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:04:44,786 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:04:44,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1066794409] [2025-02-08 10:04:44,788 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:04:44,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:04:44,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:04:44,791 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 10:04:44,794 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 10:04:44,857 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-08 10:04:44,889 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 10:04:44,890 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:04:44,890 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:04:44,896 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-02-08 10:04:44,899 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:04:44,905 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 10:04:44,913 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 10:04:45,095 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 10:04:45,095 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:04:45,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:04:45,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049038595] [2025-02-08 10:04:45,095 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:04:45,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066794409] [2025-02-08 10:04:45,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066794409] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:04:45,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:04:45,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 10:04:45,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391436170] [2025-02-08 10:04:45,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:04:45,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 10:04:45,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:04:45,096 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 10:04:45,096 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-02-08 10:04:45,097 INFO L87 Difference]: Start difference. First operand 112 states and 134 transitions. Second operand has 7 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 10:04:45,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:04:45,297 INFO L93 Difference]: Finished difference Result 144 states and 158 transitions. [2025-02-08 10:04:45,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 10:04:45,297 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2025-02-08 10:04:45,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:04:45,298 INFO L225 Difference]: With dead ends: 144 [2025-02-08 10:04:45,298 INFO L226 Difference]: Without dead ends: 143 [2025-02-08 10:04:45,299 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2025-02-08 10:04:45,299 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 71 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 10:04:45,300 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 357 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 10:04:45,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2025-02-08 10:04:45,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 112. [2025-02-08 10:04:45,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 67 states have (on average 1.507462686567164) internal successors, (101), 92 states have internal predecessors, (101), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (17), 15 states have call predecessors, (17), 15 states have call successors, (17) [2025-02-08 10:04:45,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 133 transitions. [2025-02-08 10:04:45,315 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 133 transitions. Word has length 18 [2025-02-08 10:04:45,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:04:45,315 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 133 transitions. [2025-02-08 10:04:45,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 10:04:45,316 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 133 transitions. [2025-02-08 10:04:45,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-02-08 10:04:45,317 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:04:45,317 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:04:45,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-08 10:04:45,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:04:45,521 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_30_to_37_0Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-08 10:04:45,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:04:45,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1518412432, now seen corresponding path program 1 times [2025-02-08 10:04:45,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:04:45,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143729349] [2025-02-08 10:04:45,523 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:04:45,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:04:45,539 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-08 10:04:45,570 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-08 10:04:45,571 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:04:45,571 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:04:46,004 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 10:04:46,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:04:46,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143729349] [2025-02-08 10:04:46,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143729349] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:04:46,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:04:46,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 10:04:46,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69128991] [2025-02-08 10:04:46,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:04:46,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 10:04:46,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:04:46,006 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 10:04:46,006 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 10:04:46,006 INFO L87 Difference]: Start difference. First operand 112 states and 133 transitions. Second operand has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-08 10:04:46,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:04:46,126 INFO L93 Difference]: Finished difference Result 116 states and 137 transitions. [2025-02-08 10:04:46,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 10:04:46,127 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 26 [2025-02-08 10:04:46,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:04:46,128 INFO L225 Difference]: With dead ends: 116 [2025-02-08 10:04:46,130 INFO L226 Difference]: Without dead ends: 114 [2025-02-08 10:04:46,130 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 10:04:46,131 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 16 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 10:04:46,131 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 359 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 10:04:46,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2025-02-08 10:04:46,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2025-02-08 10:04:46,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 69 states have (on average 1.4927536231884058) internal successors, (103), 94 states have internal predecessors, (103), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (17), 15 states have call predecessors, (17), 15 states have call successors, (17) [2025-02-08 10:04:46,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 135 transitions. [2025-02-08 10:04:46,145 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 135 transitions. Word has length 26 [2025-02-08 10:04:46,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:04:46,145 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 135 transitions. [2025-02-08 10:04:46,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-08 10:04:46,145 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 135 transitions. [2025-02-08 10:04:46,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-02-08 10:04:46,146 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:04:46,146 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:04:46,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 10:04:46,146 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_30_to_37_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-08 10:04:46,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:04:46,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1094532914, now seen corresponding path program 1 times [2025-02-08 10:04:46,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:04:46,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874331124] [2025-02-08 10:04:46,147 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:04:46,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:04:46,165 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-08 10:04:46,177 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-08 10:04:46,177 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:04:46,177 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:04:46,358 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 10:04:46,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:04:46,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874331124] [2025-02-08 10:04:46,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874331124] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:04:46,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:04:46,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 10:04:46,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813974158] [2025-02-08 10:04:46,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:04:46,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 10:04:46,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:04:46,360 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 10:04:46,361 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 10:04:46,361 INFO L87 Difference]: Start difference. First operand 114 states and 135 transitions. Second operand has 6 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-08 10:04:46,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:04:46,472 INFO L93 Difference]: Finished difference Result 118 states and 139 transitions. [2025-02-08 10:04:46,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 10:04:46,472 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2025-02-08 10:04:46,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:04:46,473 INFO L225 Difference]: With dead ends: 118 [2025-02-08 10:04:46,473 INFO L226 Difference]: Without dead ends: 116 [2025-02-08 10:04:46,474 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 10:04:46,474 INFO L435 NwaCegarLoop]: 81 mSDtfsCounter, 18 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 10:04:46,475 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 367 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 10:04:46,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2025-02-08 10:04:46,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2025-02-08 10:04:46,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 71 states have (on average 1.4788732394366197) internal successors, (105), 96 states have internal predecessors, (105), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (17), 15 states have call predecessors, (17), 15 states have call successors, (17) [2025-02-08 10:04:46,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 137 transitions. [2025-02-08 10:04:46,492 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 137 transitions. Word has length 28 [2025-02-08 10:04:46,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:04:46,493 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 137 transitions. [2025-02-08 10:04:46,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-08 10:04:46,493 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 137 transitions. [2025-02-08 10:04:46,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-02-08 10:04:46,494 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:04:46,495 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 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 10:04:46,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 10:04:46,495 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_40_to_50_0Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-08 10:04:46,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:04:46,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1005530265, now seen corresponding path program 1 times [2025-02-08 10:04:46,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:04:46,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231211715] [2025-02-08 10:04:46,496 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:04:46,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:04:46,511 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-02-08 10:04:46,529 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-08 10:04:46,530 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:04:46,530 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:04:46,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1966830840] [2025-02-08 10:04:46,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:04:46,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:04:46,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:04:46,534 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 10:04:46,547 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 10:04:46,624 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-02-08 10:04:46,664 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-08 10:04:46,664 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:04:46,664 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:04:46,667 INFO L256 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 35 conjuncts are in the unsatisfiable core [2025-02-08 10:04:46,669 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:04:46,685 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 10:04:46,688 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 10:04:46,905 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 10:04:46,910 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 10:04:46,921 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 10:04:46,921 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:04:46,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:04:46,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231211715] [2025-02-08 10:04:46,921 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:04:46,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966830840] [2025-02-08 10:04:46,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966830840] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:04:46,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:04:46,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 10:04:46,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505635556] [2025-02-08 10:04:46,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:04:46,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 10:04:46,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:04:46,922 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 10:04:46,922 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-02-08 10:04:46,922 INFO L87 Difference]: Start difference. First operand 116 states and 137 transitions. Second operand has 7 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-08 10:04:51,079 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-08 10:04:55,111 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-08 10:04:59,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-08 10:04:59,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:04:59,157 INFO L93 Difference]: Finished difference Result 173 states and 202 transitions. [2025-02-08 10:04:59,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 10:04:59,158 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 31 [2025-02-08 10:04:59,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:04:59,161 INFO L225 Difference]: With dead ends: 173 [2025-02-08 10:04:59,161 INFO L226 Difference]: Without dead ends: 172 [2025-02-08 10:04:59,161 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2025-02-08 10:04:59,162 INFO L435 NwaCegarLoop]: 68 mSDtfsCounter, 136 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 14 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2025-02-08 10:04:59,162 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 296 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 121 Invalid, 3 Unknown, 0 Unchecked, 12.2s Time] [2025-02-08 10:04:59,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2025-02-08 10:04:59,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 143. [2025-02-08 10:04:59,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 92 states have (on average 1.4782608695652173) internal successors, (136), 118 states have internal predecessors, (136), 18 states have call successors, (18), 8 states have call predecessors, (18), 9 states have return successors, (25), 18 states have call predecessors, (25), 18 states have call successors, (25) [2025-02-08 10:04:59,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 179 transitions. [2025-02-08 10:04:59,178 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 179 transitions. Word has length 31 [2025-02-08 10:04:59,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:04:59,178 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 179 transitions. [2025-02-08 10:04:59,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-08 10:04:59,178 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 179 transitions. [2025-02-08 10:04:59,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-02-08 10:04:59,179 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:04:59,179 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 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 10:04:59,189 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 10:04:59,384 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 10:04:59,384 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_40_to_50_0Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-08 10:04:59,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:04:59,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1106667138, now seen corresponding path program 1 times [2025-02-08 10:04:59,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:04:59,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782805880] [2025-02-08 10:04:59,386 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:04:59,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:04:59,404 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-02-08 10:04:59,431 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-02-08 10:04:59,433 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:04:59,433 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:04:59,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [315859790] [2025-02-08 10:04:59,434 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:04:59,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:04:59,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:04:59,437 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 10:04:59,440 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 10:04:59,516 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-02-08 10:04:59,558 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-02-08 10:04:59,558 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:04:59,558 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:04:59,560 INFO L256 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-08 10:04:59,562 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:04:59,566 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 10:04:59,692 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 10:04:59,692 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:04:59,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:04:59,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782805880] [2025-02-08 10:04:59,692 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:04:59,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315859790] [2025-02-08 10:04:59,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315859790] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:04:59,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:04:59,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 10:04:59,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864732048] [2025-02-08 10:04:59,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:04:59,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 10:04:59,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:04:59,694 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 10:04:59,694 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-02-08 10:04:59,694 INFO L87 Difference]: Start difference. First operand 143 states and 179 transitions. Second operand has 7 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-08 10:04:59,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:04:59,893 INFO L93 Difference]: Finished difference Result 172 states and 200 transitions. [2025-02-08 10:04:59,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 10:04:59,894 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2025-02-08 10:04:59,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:04:59,896 INFO L225 Difference]: With dead ends: 172 [2025-02-08 10:04:59,896 INFO L226 Difference]: Without dead ends: 171 [2025-02-08 10:04:59,896 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2025-02-08 10:04:59,896 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 97 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 10:04:59,897 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 344 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 10:04:59,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2025-02-08 10:04:59,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 143. [2025-02-08 10:04:59,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 92 states have (on average 1.4565217391304348) internal successors, (134), 118 states have internal predecessors, (134), 18 states have call successors, (18), 8 states have call predecessors, (18), 9 states have return successors, (25), 18 states have call predecessors, (25), 18 states have call successors, (25) [2025-02-08 10:04:59,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 177 transitions. [2025-02-08 10:04:59,919 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 177 transitions. Word has length 32 [2025-02-08 10:04:59,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:04:59,920 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 177 transitions. [2025-02-08 10:04:59,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-08 10:04:59,920 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 177 transitions. [2025-02-08 10:04:59,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-02-08 10:04:59,922 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:04:59,922 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 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 10:04:59,932 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 10:05:00,122 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 10:05:00,123 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_40_to_50_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-08 10:05:00,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:05:00,123 INFO L85 PathProgramCache]: Analyzing trace with hash 53057093, now seen corresponding path program 1 times [2025-02-08 10:05:00,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:05:00,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149010241] [2025-02-08 10:05:00,124 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:00,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:05:00,138 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-08 10:05:00,151 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-08 10:05:00,152 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:00,152 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:05:00,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [732699306] [2025-02-08 10:05:00,153 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:00,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:05:00,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:05:00,155 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 10:05:00,157 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 10:05:00,230 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-08 10:05:00,271 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-08 10:05:00,272 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:00,272 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:05:00,274 INFO L256 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 72 conjuncts are in the unsatisfiable core [2025-02-08 10:05:00,278 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:05:00,285 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 10:05:00,292 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 10:05:00,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2025-02-08 10:05:00,304 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 10:05:00,711 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 10:05:00,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 37 [2025-02-08 10:05:01,015 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 10:05:01,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 26 [2025-02-08 10:05:01,043 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 10:05:01,043 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:05:01,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:05:01,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149010241] [2025-02-08 10:05:01,044 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:05:01,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732699306] [2025-02-08 10:05:01,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732699306] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:05:01,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:05:01,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-08 10:05:01,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660653214] [2025-02-08 10:05:01,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:05:01,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-08 10:05:01,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:05:01,045 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-08 10:05:01,045 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2025-02-08 10:05:01,046 INFO L87 Difference]: Start difference. First operand 143 states and 177 transitions. Second operand has 10 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 4 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-02-08 10:05:01,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:05:01,728 INFO L93 Difference]: Finished difference Result 167 states and 194 transitions. [2025-02-08 10:05:01,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-08 10:05:01,728 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 4 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 33 [2025-02-08 10:05:01,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:05:01,731 INFO L225 Difference]: With dead ends: 167 [2025-02-08 10:05:01,731 INFO L226 Difference]: Without dead ends: 166 [2025-02-08 10:05:01,732 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2025-02-08 10:05:01,732 INFO L435 NwaCegarLoop]: 62 mSDtfsCounter, 136 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-08 10:05:01,733 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 410 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-08 10:05:01,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2025-02-08 10:05:01,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 143. [2025-02-08 10:05:01,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 92 states have (on average 1.434782608695652) internal successors, (132), 118 states have internal predecessors, (132), 18 states have call successors, (18), 8 states have call predecessors, (18), 9 states have return successors, (25), 18 states have call predecessors, (25), 18 states have call successors, (25) [2025-02-08 10:05:01,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 175 transitions. [2025-02-08 10:05:01,757 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 175 transitions. Word has length 33 [2025-02-08 10:05:01,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:05:01,757 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 175 transitions. [2025-02-08 10:05:01,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 4 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-02-08 10:05:01,757 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 175 transitions. [2025-02-08 10:05:01,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-02-08 10:05:01,759 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:05:01,759 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 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 10:05:01,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-08 10:05:01,959 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 10:05:01,960 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_40_to_50_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-08 10:05:01,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:05:01,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1644769884, now seen corresponding path program 1 times [2025-02-08 10:05:01,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:05:01,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367336325] [2025-02-08 10:05:01,960 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:01,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:05:01,986 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-02-08 10:05:01,998 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-02-08 10:05:01,998 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:01,998 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:05:02,613 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 10:05:02,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:05:02,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367336325] [2025-02-08 10:05:02,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367336325] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:05:02,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:05:02,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-08 10:05:02,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84055046] [2025-02-08 10:05:02,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:05:02,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-08 10:05:02,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:05:02,615 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-08 10:05:02,615 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2025-02-08 10:05:02,615 INFO L87 Difference]: Start difference. First operand 143 states and 175 transitions. Second operand has 11 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-08 10:05:03,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:05:03,054 INFO L93 Difference]: Finished difference Result 190 states and 228 transitions. [2025-02-08 10:05:03,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-08 10:05:03,055 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 34 [2025-02-08 10:05:03,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:05:03,056 INFO L225 Difference]: With dead ends: 190 [2025-02-08 10:05:03,056 INFO L226 Difference]: Without dead ends: 189 [2025-02-08 10:05:03,057 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2025-02-08 10:05:03,057 INFO L435 NwaCegarLoop]: 58 mSDtfsCounter, 128 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 10:05:03,057 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 457 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 10:05:03,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2025-02-08 10:05:03,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 170. [2025-02-08 10:05:03,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 112 states have (on average 1.4196428571428572) internal successors, (159), 139 states have internal predecessors, (159), 21 states have call successors, (21), 9 states have call predecessors, (21), 13 states have return successors, (34), 21 states have call predecessors, (34), 21 states have call successors, (34) [2025-02-08 10:05:03,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 214 transitions. [2025-02-08 10:05:03,077 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 214 transitions. Word has length 34 [2025-02-08 10:05:03,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:05:03,078 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 214 transitions. [2025-02-08 10:05:03,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-08 10:05:03,078 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 214 transitions. [2025-02-08 10:05:03,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2025-02-08 10:05:03,079 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:05:03,079 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 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 10:05:03,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-08 10:05:03,079 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_40_to_50_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-08 10:05:03,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:05:03,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1141628437, now seen corresponding path program 1 times [2025-02-08 10:05:03,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:05:03,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466336151] [2025-02-08 10:05:03,080 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:03,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:05:03,090 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-02-08 10:05:03,107 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-02-08 10:05:03,107 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:03,107 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:05:03,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1255410351] [2025-02-08 10:05:03,108 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:03,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:05:03,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:05:03,111 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 10:05:03,125 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 10:05:03,198 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-02-08 10:05:03,237 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-02-08 10:05:03,237 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:03,238 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:05:03,240 INFO L256 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-02-08 10:05:03,242 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:05:03,247 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 10:05:03,255 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 15 treesize of output 1 [2025-02-08 10:05:03,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-02-08 10:05:03,475 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 10:05:03,477 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:05:03,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:05:03,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466336151] [2025-02-08 10:05:03,477 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:05:03,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255410351] [2025-02-08 10:05:03,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255410351] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:05:03,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:05:03,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-08 10:05:03,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141124935] [2025-02-08 10:05:03,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:05:03,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-08 10:05:03,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:05:03,479 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-08 10:05:03,479 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2025-02-08 10:05:03,479 INFO L87 Difference]: Start difference. First operand 170 states and 214 transitions. Second operand has 9 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2025-02-08 10:05:03,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:05:03,797 INFO L93 Difference]: Finished difference Result 189 states and 230 transitions. [2025-02-08 10:05:03,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 10:05:03,797 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 41 [2025-02-08 10:05:03,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:05:03,799 INFO L225 Difference]: With dead ends: 189 [2025-02-08 10:05:03,799 INFO L226 Difference]: Without dead ends: 188 [2025-02-08 10:05:03,799 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2025-02-08 10:05:03,800 INFO L435 NwaCegarLoop]: 65 mSDtfsCounter, 163 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 30 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 10:05:03,800 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 338 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 171 Invalid, 1 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 10:05:03,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2025-02-08 10:05:03,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 170. [2025-02-08 10:05:03,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 112 states have (on average 1.4107142857142858) internal successors, (158), 139 states have internal predecessors, (158), 21 states have call successors, (21), 9 states have call predecessors, (21), 13 states have return successors, (34), 21 states have call predecessors, (34), 21 states have call successors, (34) [2025-02-08 10:05:03,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 213 transitions. [2025-02-08 10:05:03,822 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 213 transitions. Word has length 41 [2025-02-08 10:05:03,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:05:03,822 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 213 transitions. [2025-02-08 10:05:03,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2025-02-08 10:05:03,822 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 213 transitions. [2025-02-08 10:05:03,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-02-08 10:05:03,823 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:05:03,823 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 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 10:05:03,832 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 10:05:04,023 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,SelfDestructingSolverStorable9 [2025-02-08 10:05:04,024 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_40_to_50_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-08 10:05:04,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:05:04,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1030743184, now seen corresponding path program 1 times [2025-02-08 10:05:04,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:05:04,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763046554] [2025-02-08 10:05:04,024 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:04,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:05:04,037 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-02-08 10:05:04,055 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-02-08 10:05:04,055 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:04,056 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:05:04,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2034888586] [2025-02-08 10:05:04,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:04,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:05:04,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:05:04,059 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 10:05:04,062 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 10:05:04,127 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-02-08 10:05:04,171 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-02-08 10:05:04,171 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:04,171 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:05:04,173 INFO L256 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-02-08 10:05:04,175 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:05:04,182 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 10:05:04,186 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 10:05:04,413 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 10:05:04,414 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:05:04,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:05:04,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763046554] [2025-02-08 10:05:04,414 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:05:04,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034888586] [2025-02-08 10:05:04,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034888586] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:05:04,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:05:04,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-08 10:05:04,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434742115] [2025-02-08 10:05:04,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:05:04,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-08 10:05:04,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:05:04,416 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-08 10:05:04,416 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2025-02-08 10:05:04,416 INFO L87 Difference]: Start difference. First operand 170 states and 213 transitions. Second operand has 9 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 3 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2025-02-08 10:05:04,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:05:04,741 INFO L93 Difference]: Finished difference Result 188 states and 229 transitions. [2025-02-08 10:05:04,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 10:05:04,743 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 3 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 42 [2025-02-08 10:05:04,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:05:04,745 INFO L225 Difference]: With dead ends: 188 [2025-02-08 10:05:04,745 INFO L226 Difference]: Without dead ends: 187 [2025-02-08 10:05:04,745 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2025-02-08 10:05:04,745 INFO L435 NwaCegarLoop]: 66 mSDtfsCounter, 159 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 30 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 10:05:04,746 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 368 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 179 Invalid, 1 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 10:05:04,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2025-02-08 10:05:04,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 170. [2025-02-08 10:05:04,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 112 states have (on average 1.4017857142857142) internal successors, (157), 139 states have internal predecessors, (157), 21 states have call successors, (21), 9 states have call predecessors, (21), 13 states have return successors, (34), 21 states have call predecessors, (34), 21 states have call successors, (34) [2025-02-08 10:05:04,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 212 transitions. [2025-02-08 10:05:04,772 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 212 transitions. Word has length 42 [2025-02-08 10:05:04,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:05:04,772 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 212 transitions. [2025-02-08 10:05:04,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 3 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2025-02-08 10:05:04,773 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 212 transitions. [2025-02-08 10:05:04,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-02-08 10:05:04,774 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:05:04,774 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:05:04,783 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 10:05:04,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:05:04,975 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_30_to_37_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-08 10:05:04,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:05:04,975 INFO L85 PathProgramCache]: Analyzing trace with hash -2043291450, now seen corresponding path program 1 times [2025-02-08 10:05:04,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:05:04,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199255297] [2025-02-08 10:05:04,976 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:04,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:05:04,988 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-02-08 10:05:05,007 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-02-08 10:05:05,007 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:05,007 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:05:05,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1448797542] [2025-02-08 10:05:05,009 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:05,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:05:05,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:05:05,011 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 10:05:05,015 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 10:05:05,093 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-02-08 10:05:05,135 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-02-08 10:05:05,136 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:05,136 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:05:05,138 INFO L256 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-02-08 10:05:05,141 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:05:05,149 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 10:05:05,152 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 10:05:05,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2025-02-08 10:05:05,502 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 10:05:05,505 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 10:05:05,519 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-08 10:05:05,520 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:05:05,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:05:05,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199255297] [2025-02-08 10:05:05,614 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:05:05,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448797542] [2025-02-08 10:05:05,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448797542] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:05:05,614 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-02-08 10:05:05,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2025-02-08 10:05:05,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350904888] [2025-02-08 10:05:05,615 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-02-08 10:05:05,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-08 10:05:05,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:05:05,615 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-08 10:05:05,616 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2025-02-08 10:05:05,616 INFO L87 Difference]: Start difference. First operand 170 states and 212 transitions. Second operand has 11 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-08 10:05:09,633 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-08 10:05:13,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-08 10:05:17,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-08 10:05:21,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-08 10:05:25,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-08 10:05:29,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-08 10:05:33,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-08 10:05:37,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-08 10:05:42,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-08 10:05:46,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-08 10:05:50,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-08 10:05:50,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:05:50,058 INFO L93 Difference]: Finished difference Result 253 states and 302 transitions. [2025-02-08 10:05:50,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-08 10:05:50,059 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 45 [2025-02-08 10:05:50,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:05:50,060 INFO L225 Difference]: With dead ends: 253 [2025-02-08 10:05:50,060 INFO L226 Difference]: Without dead ends: 252 [2025-02-08 10:05:50,061 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 28 SyntacticMatches, 8 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2025-02-08 10:05:50,061 INFO L435 NwaCegarLoop]: 117 mSDtfsCounter, 122 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 15 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.3s IncrementalHoareTripleChecker+Time [2025-02-08 10:05:50,061 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 657 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 275 Invalid, 11 Unknown, 0 Unchecked, 44.3s Time] [2025-02-08 10:05:50,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2025-02-08 10:05:50,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 206. [2025-02-08 10:05:50,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 137 states have (on average 1.3722627737226278) internal successors, (188), 165 states have internal predecessors, (188), 28 states have call successors, (28), 12 states have call predecessors, (28), 17 states have return successors, (45), 28 states have call predecessors, (45), 28 states have call successors, (45) [2025-02-08 10:05:50,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 261 transitions. [2025-02-08 10:05:50,093 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 261 transitions. Word has length 45 [2025-02-08 10:05:50,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:05:50,093 INFO L471 AbstractCegarLoop]: Abstraction has 206 states and 261 transitions. [2025-02-08 10:05:50,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-08 10:05:50,093 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 261 transitions. [2025-02-08 10:05:50,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2025-02-08 10:05:50,094 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:05:50,094 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:05:50,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-08 10:05:50,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:05:50,299 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting func_to_recursive_line_30_to_37_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-08 10:05:50,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:05:50,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1082474518, now seen corresponding path program 1 times [2025-02-08 10:05:50,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:05:50,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781580733] [2025-02-08 10:05:50,300 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:50,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:05:50,310 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-02-08 10:05:50,328 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-02-08 10:05:50,329 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:50,329 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:05:50,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [883407861] [2025-02-08 10:05:50,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:50,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:05:50,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:05:50,332 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 10:05:50,334 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 10:05:50,413 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-02-08 10:05:50,456 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-02-08 10:05:50,456 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:50,456 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:05:50,458 INFO L256 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 52 conjuncts are in the unsatisfiable core [2025-02-08 10:05:50,461 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:05:50,468 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 10:05:50,472 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 10:05:50,716 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 10:05:50,876 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-08 10:05:50,877 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:05:51,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:05:51,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781580733] [2025-02-08 10:05:51,027 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:05:51,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883407861] [2025-02-08 10:05:51,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883407861] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:05:51,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-02-08 10:05:51,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2025-02-08 10:05:51,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546116299] [2025-02-08 10:05:51,028 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-02-08 10:05:51,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-08 10:05:51,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:05:51,029 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-08 10:05:51,029 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2025-02-08 10:05:51,029 INFO L87 Difference]: Start difference. First operand 206 states and 261 transitions. Second operand has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-08 10:05:51,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:05:51,422 INFO L93 Difference]: Finished difference Result 252 states and 301 transitions. [2025-02-08 10:05:51,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-08 10:05:51,424 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 46 [2025-02-08 10:05:51,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:05:51,425 INFO L225 Difference]: With dead ends: 252 [2025-02-08 10:05:51,425 INFO L226 Difference]: Without dead ends: 251 [2025-02-08 10:05:51,426 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 30 SyntacticMatches, 8 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2025-02-08 10:05:51,426 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 118 mSDsluCounter, 724 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 10:05:51,426 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 842 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 10:05:51,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2025-02-08 10:05:51,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 206. [2025-02-08 10:05:51,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 137 states have (on average 1.364963503649635) internal successors, (187), 165 states have internal predecessors, (187), 28 states have call successors, (28), 12 states have call predecessors, (28), 17 states have return successors, (45), 28 states have call predecessors, (45), 28 states have call successors, (45) [2025-02-08 10:05:51,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 260 transitions. [2025-02-08 10:05:51,458 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 260 transitions. Word has length 46 [2025-02-08 10:05:51,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:05:51,458 INFO L471 AbstractCegarLoop]: Abstraction has 206 states and 260 transitions. [2025-02-08 10:05:51,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-08 10:05:51,459 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 260 transitions. [2025-02-08 10:05:51,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-02-08 10:05:51,459 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:05:51,460 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:05:51,467 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 10:05:51,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:05:51,660 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting func_to_recursive_line_40_to_50_0Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-08 10:05:51,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:05:51,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1270044383, now seen corresponding path program 1 times [2025-02-08 10:05:51,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:05:51,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156136913] [2025-02-08 10:05:51,661 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:51,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:05:51,670 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-02-08 10:05:51,678 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-02-08 10:05:51,678 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:51,678 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:05:51,855 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-02-08 10:05:51,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:05:51,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156136913] [2025-02-08 10:05:51,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156136913] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:05:51,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:05:51,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-08 10:05:51,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966645920] [2025-02-08 10:05:51,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:05:51,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 10:05:51,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:05:51,857 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 10:05:51,857 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-08 10:05:51,857 INFO L87 Difference]: Start difference. First operand 206 states and 260 transitions. Second operand has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-08 10:05:52,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:05:52,045 INFO L93 Difference]: Finished difference Result 275 states and 328 transitions. [2025-02-08 10:05:52,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 10:05:52,045 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 50 [2025-02-08 10:05:52,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:05:52,048 INFO L225 Difference]: With dead ends: 275 [2025-02-08 10:05:52,048 INFO L226 Difference]: Without dead ends: 192 [2025-02-08 10:05:52,048 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2025-02-08 10:05:52,050 INFO L435 NwaCegarLoop]: 68 mSDtfsCounter, 74 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 10:05:52,050 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 326 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 10:05:52,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2025-02-08 10:05:52,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 183. [2025-02-08 10:05:52,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 119 states have (on average 1.3445378151260505) internal successors, (160), 146 states have internal predecessors, (160), 25 states have call successors, (25), 11 states have call predecessors, (25), 15 states have return successors, (36), 25 states have call predecessors, (36), 25 states have call successors, (36) [2025-02-08 10:05:52,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 221 transitions. [2025-02-08 10:05:52,076 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 221 transitions. Word has length 50 [2025-02-08 10:05:52,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:05:52,076 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 221 transitions. [2025-02-08 10:05:52,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-08 10:05:52,077 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 221 transitions. [2025-02-08 10:05:52,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-02-08 10:05:52,077 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:05:52,077 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:05:52,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-02-08 10:05:52,077 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-08 10:05:52,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:05:52,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1524282743, now seen corresponding path program 1 times [2025-02-08 10:05:52,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:05:52,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337162933] [2025-02-08 10:05:52,078 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:52,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:05:52,088 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-02-08 10:05:52,108 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-02-08 10:05:52,109 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:52,109 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:05:52,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [281579991] [2025-02-08 10:05:52,110 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:52,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:05:52,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:05:52,114 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 10:05:52,116 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 10:05:52,202 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-02-08 10:05:52,246 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-02-08 10:05:52,247 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:52,247 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:05:52,248 INFO L256 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-08 10:05:52,250 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:05:52,256 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 10:05:52,356 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-08 10:05:52,356 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:05:53,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:05:53,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337162933] [2025-02-08 10:05:53,517 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:05:53,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281579991] [2025-02-08 10:05:53,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281579991] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:05:53,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-02-08 10:05:53,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2025-02-08 10:05:53,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335450457] [2025-02-08 10:05:53,518 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-02-08 10:05:53,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 10:05:53,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:05:53,519 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 10:05:53,519 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-08 10:05:53,519 INFO L87 Difference]: Start difference. First operand 183 states and 221 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2025-02-08 10:05:53,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:05:53,787 INFO L93 Difference]: Finished difference Result 210 states and 243 transitions. [2025-02-08 10:05:53,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 10:05:53,788 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 53 [2025-02-08 10:05:53,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:05:53,791 INFO L225 Difference]: With dead ends: 210 [2025-02-08 10:05:53,792 INFO L226 Difference]: Without dead ends: 208 [2025-02-08 10:05:53,792 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-02-08 10:05:53,792 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 124 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 10:05:53,792 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 161 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 10:05:53,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2025-02-08 10:05:53,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 187. [2025-02-08 10:05:53,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 122 states have (on average 1.3360655737704918) internal successors, (163), 149 states have internal predecessors, (163), 26 states have call successors, (26), 11 states have call predecessors, (26), 15 states have return successors, (38), 27 states have call predecessors, (38), 26 states have call successors, (38) [2025-02-08 10:05:53,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 227 transitions. [2025-02-08 10:05:53,826 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 227 transitions. Word has length 53 [2025-02-08 10:05:53,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:05:53,826 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 227 transitions. [2025-02-08 10:05:53,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2025-02-08 10:05:53,826 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 227 transitions. [2025-02-08 10:05:53,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2025-02-08 10:05:53,827 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:05:53,828 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:05:53,835 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 10:05:54,028 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,SelfDestructingSolverStorable14 [2025-02-08 10:05:54,028 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting func_to_recursive_line_30_to_37_0Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-08 10:05:54,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:05:54,029 INFO L85 PathProgramCache]: Analyzing trace with hash 938392826, now seen corresponding path program 1 times [2025-02-08 10:05:54,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:05:54,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191101219] [2025-02-08 10:05:54,029 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:54,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:05:54,038 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 54 statements into 1 equivalence classes. [2025-02-08 10:05:54,044 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 54 of 54 statements. [2025-02-08 10:05:54,044 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:54,044 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:05:54,337 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2025-02-08 10:05:54,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:05:54,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191101219] [2025-02-08 10:05:54,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191101219] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:05:54,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570679337] [2025-02-08 10:05:54,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:05:54,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:05:54,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:05:54,340 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 10:05:54,342 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 10:05:54,420 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 54 statements into 1 equivalence classes. [2025-02-08 10:05:54,458 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 54 of 54 statements. [2025-02-08 10:05:54,458 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:05:54,458 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:05:54,460 INFO L256 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-02-08 10:05:54,462 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:05:54,476 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 10:05:54,669 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 28 treesize of output 16 [2025-02-08 10:05:55,067 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 30 treesize of output 18 [2025-02-08 10:05:55,073 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 47 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-02-08 10:05:55,073 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:05:55,277 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2025-02-08 10:05:55,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570679337] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 10:05:55,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 10:05:55,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 23 [2025-02-08 10:05:55,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073952047] [2025-02-08 10:05:55,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 10:05:55,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-08 10:05:55,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:05:55,281 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-08 10:05:55,281 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2025-02-08 10:05:55,281 INFO L87 Difference]: Start difference. First operand 187 states and 227 transitions. Second operand has 24 states, 20 states have (on average 3.7) internal successors, (74), 18 states have internal predecessors, (74), 9 states have call successors, (24), 9 states have call predecessors, (24), 3 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2025-02-08 10:05:59,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-08 10:06:03,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-08 10:06:07,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-08 10:06:11,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-08 10:06:11,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:06:11,860 INFO L93 Difference]: Finished difference Result 229 states and 269 transitions. [2025-02-08 10:06:11,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-08 10:06:11,861 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 20 states have (on average 3.7) internal successors, (74), 18 states have internal predecessors, (74), 9 states have call successors, (24), 9 states have call predecessors, (24), 3 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 54 [2025-02-08 10:06:11,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:06:11,863 INFO L225 Difference]: With dead ends: 229 [2025-02-08 10:06:11,863 INFO L226 Difference]: Without dead ends: 228 [2025-02-08 10:06:11,863 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 83 SyntacticMatches, 10 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=172, Invalid=640, Unknown=0, NotChecked=0, Total=812 [2025-02-08 10:06:11,864 INFO L435 NwaCegarLoop]: 108 mSDtfsCounter, 161 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 29 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 956 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.4s IncrementalHoareTripleChecker+Time [2025-02-08 10:06:11,864 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 956 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 432 Invalid, 4 Unknown, 0 Unchecked, 16.4s Time] [2025-02-08 10:06:11,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2025-02-08 10:06:11,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 207. [2025-02-08 10:06:11,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 138 states have (on average 1.318840579710145) internal successors, (182), 164 states have internal predecessors, (182), 28 states have call successors, (28), 13 states have call predecessors, (28), 18 states have return successors, (42), 30 states have call predecessors, (42), 28 states have call successors, (42) [2025-02-08 10:06:11,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 252 transitions. [2025-02-08 10:06:11,903 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 252 transitions. Word has length 54 [2025-02-08 10:06:11,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:06:11,903 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 252 transitions. [2025-02-08 10:06:11,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 20 states have (on average 3.7) internal successors, (74), 18 states have internal predecessors, (74), 9 states have call successors, (24), 9 states have call predecessors, (24), 3 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2025-02-08 10:06:11,903 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 252 transitions. [2025-02-08 10:06:11,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2025-02-08 10:06:11,904 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:06:11,904 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:06:11,913 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 10:06:12,108 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,SelfDestructingSolverStorable15 [2025-02-08 10:06:12,108 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting func_to_recursive_line_30_to_37_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-08 10:06:12,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:06:12,109 INFO L85 PathProgramCache]: Analyzing trace with hash -974593448, now seen corresponding path program 1 times [2025-02-08 10:06:12,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:06:12,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400264312] [2025-02-08 10:06:12,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:06:12,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:06:12,118 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-02-08 10:06:12,125 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-02-08 10:06:12,126 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:06:12,126 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:06:12,418 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2025-02-08 10:06:12,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:06:12,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400264312] [2025-02-08 10:06:12,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400264312] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:06:12,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827966886] [2025-02-08 10:06:12,418 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:06:12,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:06:12,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:06:12,421 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 10:06:12,423 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 10:06:12,506 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-02-08 10:06:12,543 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-02-08 10:06:12,544 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:06:12,544 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:06:12,552 INFO L256 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-02-08 10:06:12,554 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:06:12,566 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 10:06:12,756 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 28 treesize of output 16 [2025-02-08 10:06:13,080 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 10:06:13,088 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-02-08 10:06:13,088 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:06:13,258 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2025-02-08 10:06:13,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827966886] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 10:06:13,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 10:06:13,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 23 [2025-02-08 10:06:13,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873860427] [2025-02-08 10:06:13,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 10:06:13,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-08 10:06:13,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:06:13,260 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-08 10:06:13,261 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2025-02-08 10:06:13,261 INFO L87 Difference]: Start difference. First operand 207 states and 252 transitions. Second operand has 24 states, 20 states have (on average 3.8) internal successors, (76), 18 states have internal predecessors, (76), 9 states have call successors, (24), 9 states have call predecessors, (24), 3 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2025-02-08 10:06:13,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:06:13,910 INFO L93 Difference]: Finished difference Result 279 states and 331 transitions. [2025-02-08 10:06:13,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-08 10:06:13,910 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 20 states have (on average 3.8) internal successors, (76), 18 states have internal predecessors, (76), 9 states have call successors, (24), 9 states have call predecessors, (24), 3 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 55 [2025-02-08 10:06:13,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:06:13,912 INFO L225 Difference]: With dead ends: 279 [2025-02-08 10:06:13,913 INFO L226 Difference]: Without dead ends: 278 [2025-02-08 10:06:13,913 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 85 SyntacticMatches, 10 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=208, Invalid=848, Unknown=0, NotChecked=0, Total=1056 [2025-02-08 10:06:13,914 INFO L435 NwaCegarLoop]: 106 mSDtfsCounter, 195 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-08 10:06:13,914 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 844 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-08 10:06:13,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2025-02-08 10:06:13,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 249. [2025-02-08 10:06:13,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 168 states have (on average 1.3214285714285714) internal successors, (222), 196 states have internal predecessors, (222), 36 states have call successors, (36), 15 states have call predecessors, (36), 22 states have return successors, (54), 38 states have call predecessors, (54), 36 states have call successors, (54) [2025-02-08 10:06:13,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 312 transitions. [2025-02-08 10:06:13,954 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 312 transitions. Word has length 55 [2025-02-08 10:06:13,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:06:13,954 INFO L471 AbstractCegarLoop]: Abstraction has 249 states and 312 transitions. [2025-02-08 10:06:13,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 20 states have (on average 3.8) internal successors, (76), 18 states have internal predecessors, (76), 9 states have call successors, (24), 9 states have call predecessors, (24), 3 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2025-02-08 10:06:13,955 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 312 transitions. [2025-02-08 10:06:13,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2025-02-08 10:06:13,955 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:06:13,955 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:06:13,964 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-08 10:06:14,155 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,SelfDestructingSolverStorable16 [2025-02-08 10:06:14,156 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_50_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-08 10:06:14,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:06:14,156 INFO L85 PathProgramCache]: Analyzing trace with hash 251869717, now seen corresponding path program 1 times [2025-02-08 10:06:14,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:06:14,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105797947] [2025-02-08 10:06:14,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:06:14,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:06:14,168 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-02-08 10:06:14,181 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-02-08 10:06:14,181 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:06:14,181 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:06:14,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2144816515] [2025-02-08 10:06:14,182 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:06:14,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:06:14,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:06:14,185 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 10:06:14,188 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 10:06:14,277 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-02-08 10:06:14,317 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-02-08 10:06:14,317 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:06:14,318 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:06:14,319 INFO L256 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-02-08 10:06:14,323 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:06:14,335 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 10:06:14,343 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 10:06:14,556 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 10:06:14,567 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-08 10:06:14,567 INFO L312 TraceCheckSpWp]: Computing backward predicates...