./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd3-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd3-ll.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 31cf2fabf53e081c3004f39943d7e98ce7bd9dc5e02db94d5bcffe73b0927449 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 02:35:21,674 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 02:35:21,723 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-01-10 02:35:21,730 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 02:35:21,734 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 02:35:21,760 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 02:35:21,762 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 02:35:21,762 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 02:35:21,763 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 02:35:21,763 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 02:35:21,763 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 02:35:21,763 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 02:35:21,764 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 02:35:21,764 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 02:35:21,764 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 02:35:21,764 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 02:35:21,764 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-10 02:35:21,765 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 02:35:21,765 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 02:35:21,765 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 02:35:21,765 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 02:35:21,765 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-10 02:35:21,765 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 02:35:21,765 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-10 02:35:21,765 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-01-10 02:35:21,765 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 02:35:21,765 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 02:35:21,765 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-10 02:35:21,765 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 02:35:21,765 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 02:35:21,766 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 02:35:21,766 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 02:35:21,766 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 02:35:21,766 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 02:35:21,766 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 02:35:21,766 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 02:35:21,766 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 02:35:21,767 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 02:35:21,767 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 02:35:21,767 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 02:35:21,767 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 02:35:21,767 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 02:35:21,767 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-10 02:35:21,767 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-10 02:35:21,767 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 02:35:21,767 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 02:35:21,767 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 02:35:21,767 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 02:35:21,767 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 02:35:21,768 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 02:35:21,768 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 -> 31cf2fabf53e081c3004f39943d7e98ce7bd9dc5e02db94d5bcffe73b0927449 [2025-01-10 02:35:21,966 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 02:35:21,971 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 02:35:21,973 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 02:35:21,974 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 02:35:21,974 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 02:35:21,975 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd3-ll.c [2025-01-10 02:35:23,227 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8438027a9/3ef8e36965474593b0eac0ec17f759a3/FLAGb70937399 [2025-01-10 02:35:23,492 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 02:35:23,493 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd3-ll.c [2025-01-10 02:35:23,503 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8438027a9/3ef8e36965474593b0eac0ec17f759a3/FLAGb70937399 [2025-01-10 02:35:23,786 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8438027a9/3ef8e36965474593b0eac0ec17f759a3 [2025-01-10 02:35:23,788 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 02:35:23,790 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 02:35:23,791 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 02:35:23,791 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 02:35:23,798 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 02:35:23,799 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:35:23" (1/1) ... [2025-01-10 02:35:23,800 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@545ce511 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:23, skipping insertion in model container [2025-01-10 02:35:23,800 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:35:23" (1/1) ... [2025-01-10 02:35:23,813 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 02:35:23,933 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 02:35:23,944 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 02:35:23,979 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 02:35:23,990 INFO L204 MainTranslator]: Completed translation [2025-01-10 02:35:23,991 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:23 WrapperNode [2025-01-10 02:35:23,992 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 02:35:23,992 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 02:35:23,992 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 02:35:23,993 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 02:35:23,998 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:23" (1/1) ... [2025-01-10 02:35:24,006 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:23" (1/1) ... [2025-01-10 02:35:24,025 INFO L138 Inliner]: procedures = 18, calls = 128, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 115 [2025-01-10 02:35:24,026 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 02:35:24,027 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 02:35:24,027 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 02:35:24,027 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 02:35:24,035 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:23" (1/1) ... [2025-01-10 02:35:24,035 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:23" (1/1) ... [2025-01-10 02:35:24,043 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:23" (1/1) ... [2025-01-10 02:35:24,071 INFO L175 MemorySlicer]: Split 77 memory accesses to 13 slices as follows [2, 7, 5, 7, 6, 6, 5, 6, 5, 6, 6, 9, 7]. 12 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. The 22 writes are split as follows [0, 1, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2]. [2025-01-10 02:35:24,071 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:23" (1/1) ... [2025-01-10 02:35:24,071 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:23" (1/1) ... [2025-01-10 02:35:24,085 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:23" (1/1) ... [2025-01-10 02:35:24,087 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:23" (1/1) ... [2025-01-10 02:35:24,089 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:23" (1/1) ... [2025-01-10 02:35:24,090 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:23" (1/1) ... [2025-01-10 02:35:24,095 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:23" (1/1) ... [2025-01-10 02:35:24,102 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 02:35:24,103 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 02:35:24,103 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 02:35:24,103 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 02:35:24,104 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:23" (1/1) ... [2025-01-10 02:35:24,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 02:35:24,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:35:24,130 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-10 02:35:24,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-10 02:35:24,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 02:35:24,154 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-01-10 02:35:24,154 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-01-10 02:35:24,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 02:35:24,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-10 02:35:24,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-01-10 02:35:24,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-01-10 02:35:24,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-01-10 02:35:24,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-01-10 02:35:24,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-01-10 02:35:24,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-01-10 02:35:24,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-01-10 02:35:24,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-01-10 02:35:24,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-01-10 02:35:24,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-01-10 02:35:24,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-01-10 02:35:24,155 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_47_to_56_0 [2025-01-10 02:35:24,155 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_47_to_56_0 [2025-01-10 02:35:24,155 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_33_to_70_0 [2025-01-10 02:35:24,155 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_33_to_70_0 [2025-01-10 02:35:24,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-10 02:35:24,155 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_40_to_59_0 [2025-01-10 02:35:24,155 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_40_to_59_0 [2025-01-10 02:35:24,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-10 02:35:24,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-10 02:35:24,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-01-10 02:35:24,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-01-10 02:35:24,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-01-10 02:35:24,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-01-10 02:35:24,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-01-10 02:35:24,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2025-01-10 02:35:24,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2025-01-10 02:35:24,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2025-01-10 02:35:24,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2025-01-10 02:35:24,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2025-01-10 02:35:24,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2025-01-10 02:35:24,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 02:35:24,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 02:35:24,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-10 02:35:24,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-10 02:35:24,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-01-10 02:35:24,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-01-10 02:35:24,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-01-10 02:35:24,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-01-10 02:35:24,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-01-10 02:35:24,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2025-01-10 02:35:24,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2025-01-10 02:35:24,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2025-01-10 02:35:24,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2025-01-10 02:35:24,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2025-01-10 02:35:24,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2025-01-10 02:35:24,156 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-01-10 02:35:24,156 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-01-10 02:35:24,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-10 02:35:24,284 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 02:35:24,287 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 02:35:24,750 INFO L? ?]: Removed 148 outVars from TransFormulas that were not future-live. [2025-01-10 02:35:24,750 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 02:35:24,760 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 02:35:24,762 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2025-01-10 02:35:24,763 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:35:24 BoogieIcfgContainer [2025-01-10 02:35:24,763 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 02:35:24,764 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 02:35:24,764 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 02:35:24,768 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 02:35:24,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 02:35:23" (1/3) ... [2025-01-10 02:35:24,768 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30b8ea80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:35:24, skipping insertion in model container [2025-01-10 02:35:24,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:23" (2/3) ... [2025-01-10 02:35:24,769 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30b8ea80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:35:24, skipping insertion in model container [2025-01-10 02:35:24,769 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:35:24" (3/3) ... [2025-01-10 02:35:24,770 INFO L128 eAbstractionObserver]: Analyzing ICFG recursified_egcd3-ll.c [2025-01-10 02:35:24,780 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 02:35:24,782 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG recursified_egcd3-ll.c that has 6 procedures, 153 locations, 1 initial locations, 0 loop locations, and 50 error locations. [2025-01-10 02:35:24,822 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 02:35:24,831 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;@11f90fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 02:35:24,832 INFO L334 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2025-01-10 02:35:24,834 INFO L276 IsEmpty]: Start isEmpty. Operand has 153 states, 84 states have (on average 1.6904761904761905) internal successors, (142), 137 states have internal predecessors, (142), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2025-01-10 02:35:24,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-01-10 02:35:24,838 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:35:24,839 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:35:24,839 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2025-01-10 02:35:24,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:35:24,842 INFO L85 PathProgramCache]: Analyzing trace with hash -853652536, now seen corresponding path program 1 times [2025-01-10 02:35:24,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:35:24,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068021197] [2025-01-10 02:35:24,851 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:24,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:35:24,912 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-01-10 02:35:24,931 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-01-10 02:35:24,931 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:24,931 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:35:24,997 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-10 02:35:24,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:35:24,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068021197] [2025-01-10 02:35:24,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068021197] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:35:24,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270876463] [2025-01-10 02:35:24,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:24,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:24,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:35:25,001 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:35:25,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-10 02:35:25,085 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-01-10 02:35:25,138 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-01-10 02:35:25,139 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:25,139 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:35:25,141 INFO L256 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-01-10 02:35:25,145 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:35:25,152 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-10 02:35:25,152 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 02:35:25,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270876463] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:35:25,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 02:35:25,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-01-10 02:35:25,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027286502] [2025-01-10 02:35:25,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:35:25,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-10 02:35:25,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:35:25,168 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-10 02:35:25,169 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-10 02:35:25,171 INFO L87 Difference]: Start difference. First operand has 153 states, 84 states have (on average 1.6904761904761905) internal successors, (142), 137 states have internal predecessors, (142), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-10 02:35:25,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:35:25,191 INFO L93 Difference]: Finished difference Result 302 states and 344 transitions. [2025-01-10 02:35:25,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-10 02:35:25,193 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2025-01-10 02:35:25,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:35:25,202 INFO L225 Difference]: With dead ends: 302 [2025-01-10 02:35:25,203 INFO L226 Difference]: Without dead ends: 146 [2025-01-10 02:35:25,228 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-10 02:35:25,230 INFO L435 NwaCegarLoop]: 162 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-10 02:35:25,237 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-10 02:35:25,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2025-01-10 02:35:25,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2025-01-10 02:35:25,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 79 states have (on average 1.6582278481012658) internal successors, (131), 131 states have internal predecessors, (131), 12 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-01-10 02:35:25,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 155 transitions. [2025-01-10 02:35:25,281 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 155 transitions. Word has length 21 [2025-01-10 02:35:25,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:35:25,281 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 155 transitions. [2025-01-10 02:35:25,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-10 02:35:25,282 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 155 transitions. [2025-01-10 02:35:25,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-01-10 02:35:25,283 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:35:25,283 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:35:25,291 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-10 02:35:25,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-01-10 02:35:25,486 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2025-01-10 02:35:25,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:35:25,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1124489108, now seen corresponding path program 1 times [2025-01-10 02:35:25,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:35:25,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582140264] [2025-01-10 02:35:25,487 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:25,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:35:25,506 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-01-10 02:35:25,551 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-01-10 02:35:25,551 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:25,551 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:35:25,938 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 02:35:25,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:35:25,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582140264] [2025-01-10 02:35:25,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582140264] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:35:25,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:35:25,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-01-10 02:35:25,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525933353] [2025-01-10 02:35:25,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:35:25,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-10 02:35:25,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:35:25,942 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-10 02:35:25,942 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2025-01-10 02:35:25,942 INFO L87 Difference]: Start difference. First operand 146 states and 155 transitions. Second operand has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-10 02:35:26,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:35:26,678 INFO L93 Difference]: Finished difference Result 177 states and 186 transitions. [2025-01-10 02:35:26,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-10 02:35:26,682 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 22 [2025-01-10 02:35:26,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:35:26,684 INFO L225 Difference]: With dead ends: 177 [2025-01-10 02:35:26,685 INFO L226 Difference]: Without dead ends: 148 [2025-01-10 02:35:26,685 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2025-01-10 02:35:26,685 INFO L435 NwaCegarLoop]: 53 mSDtfsCounter, 109 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-01-10 02:35:26,686 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 469 Invalid, 949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 944 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-01-10 02:35:26,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2025-01-10 02:35:26,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2025-01-10 02:35:26,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 80 states have (on average 1.65) internal successors, (132), 132 states have internal predecessors, (132), 12 states have call successors, (12), 5 states have call predecessors, (12), 6 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2025-01-10 02:35:26,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 157 transitions. [2025-01-10 02:35:26,702 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 157 transitions. Word has length 22 [2025-01-10 02:35:26,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:35:26,702 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 157 transitions. [2025-01-10 02:35:26,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-10 02:35:26,702 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 157 transitions. [2025-01-10 02:35:26,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-01-10 02:35:26,703 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:35:26,703 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:35:26,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-10 02:35:26,703 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2025-01-10 02:35:26,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:35:26,703 INFO L85 PathProgramCache]: Analyzing trace with hash -803142642, now seen corresponding path program 1 times [2025-01-10 02:35:26,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:35:26,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224160480] [2025-01-10 02:35:26,704 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:26,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:35:26,726 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-01-10 02:35:26,754 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-01-10 02:35:26,754 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:26,754 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-10 02:35:26,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1291930368] [2025-01-10 02:35:26,757 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:26,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:26,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:35:26,759 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:35:26,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-10 02:35:26,830 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-01-10 02:35:26,889 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-01-10 02:35:26,889 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:26,889 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:35:26,898 INFO L256 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 63 conjuncts are in the unsatisfiable core [2025-01-10 02:35:26,903 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:35:26,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-10 02:35:26,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-10 02:35:27,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-01-10 02:35:27,135 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 02:35:27,135 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 02:35:27,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:35:27,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224160480] [2025-01-10 02:35:27,136 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-10 02:35:27,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291930368] [2025-01-10 02:35:27,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291930368] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:35:27,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:35:27,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-01-10 02:35:27,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729415290] [2025-01-10 02:35:27,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:35:27,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-10 02:35:27,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:35:27,137 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-10 02:35:27,137 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2025-01-10 02:35:27,138 INFO L87 Difference]: Start difference. First operand 148 states and 157 transitions. Second operand has 14 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-10 02:35:27,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:35:27,514 INFO L93 Difference]: Finished difference Result 241 states and 258 transitions. [2025-01-10 02:35:27,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-10 02:35:27,515 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2025-01-10 02:35:27,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:35:27,516 INFO L225 Difference]: With dead ends: 241 [2025-01-10 02:35:27,516 INFO L226 Difference]: Without dead ends: 238 [2025-01-10 02:35:27,517 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2025-01-10 02:35:27,517 INFO L435 NwaCegarLoop]: 132 mSDtfsCounter, 187 mSDsluCounter, 1330 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 1462 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-10 02:35:27,517 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 1462 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-10 02:35:27,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2025-01-10 02:35:27,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 202. [2025-01-10 02:35:27,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 124 states have (on average 1.653225806451613) internal successors, (205), 178 states have internal predecessors, (205), 20 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (21), 19 states have call predecessors, (21), 20 states have call successors, (21) [2025-01-10 02:35:27,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 246 transitions. [2025-01-10 02:35:27,529 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 246 transitions. Word has length 26 [2025-01-10 02:35:27,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:35:27,529 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 246 transitions. [2025-01-10 02:35:27,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-10 02:35:27,529 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 246 transitions. [2025-01-10 02:35:27,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-01-10 02:35:27,530 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:35:27,530 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:35:27,540 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-10 02:35:27,734 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 [2025-01-10 02:35:27,734 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_33_to_70_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2025-01-10 02:35:27,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:35:27,734 INFO L85 PathProgramCache]: Analyzing trace with hash -805930986, now seen corresponding path program 1 times [2025-01-10 02:35:27,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:35:27,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304846049] [2025-01-10 02:35:27,735 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:27,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:35:27,751 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-01-10 02:35:27,764 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-01-10 02:35:27,764 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:27,764 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-10 02:35:27,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2121921076] [2025-01-10 02:35:27,766 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:27,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:27,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:35:27,768 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:35:27,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-10 02:35:27,847 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-01-10 02:35:27,891 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-01-10 02:35:27,891 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:27,891 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:35:27,894 INFO L256 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-10 02:35:27,897 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:35:27,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-10 02:35:27,926 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-10 02:35:27,926 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 02:35:27,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:35:27,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304846049] [2025-01-10 02:35:27,927 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-10 02:35:27,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121921076] [2025-01-10 02:35:27,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121921076] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:35:27,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:35:27,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 02:35:27,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079964392] [2025-01-10 02:35:27,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:35:27,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 02:35:27,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:35:27,928 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 02:35:27,928 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 02:35:27,928 INFO L87 Difference]: Start difference. First operand 202 states and 246 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-10 02:35:28,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:35:28,203 INFO L93 Difference]: Finished difference Result 215 states and 261 transitions. [2025-01-10 02:35:28,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 02:35:28,203 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2025-01-10 02:35:28,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:35:28,204 INFO L225 Difference]: With dead ends: 215 [2025-01-10 02:35:28,204 INFO L226 Difference]: Without dead ends: 213 [2025-01-10 02:35:28,205 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-10 02:35:28,209 INFO L435 NwaCegarLoop]: 70 mSDtfsCounter, 90 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-10 02:35:28,209 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 249 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-10 02:35:28,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2025-01-10 02:35:28,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 209. [2025-01-10 02:35:28,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 129 states have (on average 1.627906976744186) internal successors, (210), 182 states have internal predecessors, (210), 20 states have call successors, (20), 8 states have call predecessors, (20), 10 states have return successors, (25), 20 states have call predecessors, (25), 20 states have call successors, (25) [2025-01-10 02:35:28,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 255 transitions. [2025-01-10 02:35:28,231 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 255 transitions. Word has length 26 [2025-01-10 02:35:28,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:35:28,231 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 255 transitions. [2025-01-10 02:35:28,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-10 02:35:28,232 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 255 transitions. [2025-01-10 02:35:28,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-01-10 02:35:28,232 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:35:28,233 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:35:28,241 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-10 02:35:28,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:28,434 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2025-01-10 02:35:28,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:35:28,434 INFO L85 PathProgramCache]: Analyzing trace with hash 872381911, now seen corresponding path program 1 times [2025-01-10 02:35:28,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:35:28,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007202746] [2025-01-10 02:35:28,434 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:28,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:35:28,451 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-01-10 02:35:28,478 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-01-10 02:35:28,479 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:28,479 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-10 02:35:28,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [757690978] [2025-01-10 02:35:28,481 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:28,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:28,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:35:28,483 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:35:28,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-10 02:35:28,582 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-01-10 02:35:28,643 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-01-10 02:35:28,643 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:28,643 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:35:28,647 INFO L256 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-01-10 02:35:28,649 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:35:28,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-10 02:35:28,716 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-10 02:35:28,716 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 02:35:28,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:35:28,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007202746] [2025-01-10 02:35:28,717 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-10 02:35:28,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757690978] [2025-01-10 02:35:28,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757690978] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:35:28,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:35:28,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-01-10 02:35:28,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721520384] [2025-01-10 02:35:28,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:35:28,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-10 02:35:28,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:35:28,718 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-10 02:35:28,718 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-01-10 02:35:28,718 INFO L87 Difference]: Start difference. First operand 209 states and 255 transitions. Second operand has 10 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-10 02:35:28,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:35:28,923 INFO L93 Difference]: Finished difference Result 248 states and 267 transitions. [2025-01-10 02:35:28,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-10 02:35:28,923 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2025-01-10 02:35:28,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:35:28,924 INFO L225 Difference]: With dead ends: 248 [2025-01-10 02:35:28,924 INFO L226 Difference]: Without dead ends: 247 [2025-01-10 02:35:28,925 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2025-01-10 02:35:28,925 INFO L435 NwaCegarLoop]: 140 mSDtfsCounter, 160 mSDsluCounter, 1035 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-10 02:35:28,925 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 1175 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-10 02:35:28,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2025-01-10 02:35:28,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 209. [2025-01-10 02:35:28,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 129 states have (on average 1.62015503875969) internal successors, (209), 182 states have internal predecessors, (209), 20 states have call successors, (20), 8 states have call predecessors, (20), 10 states have return successors, (25), 20 states have call predecessors, (25), 20 states have call successors, (25) [2025-01-10 02:35:28,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 254 transitions. [2025-01-10 02:35:28,937 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 254 transitions. Word has length 27 [2025-01-10 02:35:28,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:35:28,937 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 254 transitions. [2025-01-10 02:35:28,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-10 02:35:28,937 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 254 transitions. [2025-01-10 02:35:28,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-01-10 02:35:28,938 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:35:28,938 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:35:28,947 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-10 02:35:29,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:29,143 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_47_to_56_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2025-01-10 02:35:29,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:35:29,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1274035504, now seen corresponding path program 1 times [2025-01-10 02:35:29,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:35:29,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333507355] [2025-01-10 02:35:29,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:29,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:35:29,160 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-01-10 02:35:29,186 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-01-10 02:35:29,186 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:29,186 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-10 02:35:29,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1937740937] [2025-01-10 02:35:29,188 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:29,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:29,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:35:29,196 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:35:29,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-10 02:35:29,278 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-01-10 02:35:29,333 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-01-10 02:35:29,333 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:29,333 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:35:29,336 INFO L256 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 63 conjuncts are in the unsatisfiable core [2025-01-10 02:35:29,339 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:35:29,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-10 02:35:29,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-10 02:35:29,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-01-10 02:35:29,574 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 02:35:29,574 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:35:30,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:35:30,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333507355] [2025-01-10 02:35:30,053 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-10 02:35:30,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937740937] [2025-01-10 02:35:30,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937740937] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:35:30,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-01-10 02:35:30,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2025-01-10 02:35:30,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884728683] [2025-01-10 02:35:30,053 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-01-10 02:35:30,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-01-10 02:35:30,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:35:30,053 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-01-10 02:35:30,054 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2025-01-10 02:35:30,054 INFO L87 Difference]: Start difference. First operand 209 states and 254 transitions. Second operand has 15 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 5 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-10 02:35:34,064 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] [2025-01-10 02:35:34,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:35:34,589 INFO L93 Difference]: Finished difference Result 241 states and 259 transitions. [2025-01-10 02:35:34,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-01-10 02:35:34,589 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 5 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2025-01-10 02:35:34,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:35:34,591 INFO L225 Difference]: With dead ends: 241 [2025-01-10 02:35:34,591 INFO L226 Difference]: Without dead ends: 240 [2025-01-10 02:35:34,592 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=110, Invalid=820, Unknown=0, NotChecked=0, Total=930 [2025-01-10 02:35:34,592 INFO L435 NwaCegarLoop]: 129 mSDtfsCounter, 351 mSDsluCounter, 1286 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 30 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 1415 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2025-01-10 02:35:34,592 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 1415 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 441 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2025-01-10 02:35:34,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2025-01-10 02:35:34,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 213. [2025-01-10 02:35:34,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 132 states have (on average 1.5984848484848484) internal successors, (211), 185 states have internal predecessors, (211), 20 states have call successors, (20), 9 states have call predecessors, (20), 11 states have return successors, (25), 20 states have call predecessors, (25), 20 states have call successors, (25) [2025-01-10 02:35:34,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 256 transitions. [2025-01-10 02:35:34,605 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 256 transitions. Word has length 28 [2025-01-10 02:35:34,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:35:34,605 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 256 transitions. [2025-01-10 02:35:34,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 5 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-10 02:35:34,606 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 256 transitions. [2025-01-10 02:35:34,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-01-10 02:35:34,606 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:35:34,606 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:35:34,614 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-10 02:35:34,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:34,807 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_33_to_70_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2025-01-10 02:35:34,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:35:34,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1405560680, now seen corresponding path program 1 times [2025-01-10 02:35:34,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:35:34,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852544576] [2025-01-10 02:35:34,807 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:34,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:35:34,821 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-01-10 02:35:34,831 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-01-10 02:35:34,831 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:34,831 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:35:34,990 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-10 02:35:34,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:35:34,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852544576] [2025-01-10 02:35:34,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852544576] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:35:34,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:35:34,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-10 02:35:34,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745196050] [2025-01-10 02:35:34,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:35:34,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-10 02:35:34,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:35:34,991 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-10 02:35:34,991 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-01-10 02:35:34,991 INFO L87 Difference]: Start difference. First operand 213 states and 256 transitions. Second operand has 7 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-10 02:35:35,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:35:35,094 INFO L93 Difference]: Finished difference Result 224 states and 268 transitions. [2025-01-10 02:35:35,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-10 02:35:35,095 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2025-01-10 02:35:35,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:35:35,097 INFO L225 Difference]: With dead ends: 224 [2025-01-10 02:35:35,097 INFO L226 Difference]: Without dead ends: 223 [2025-01-10 02:35:35,097 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-01-10 02:35:35,097 INFO L435 NwaCegarLoop]: 150 mSDtfsCounter, 7 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-10 02:35:35,097 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 726 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-10 02:35:35,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2025-01-10 02:35:35,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 220. [2025-01-10 02:35:35,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 139 states have (on average 1.5827338129496402) internal successors, (220), 190 states have internal predecessors, (220), 20 states have call successors, (20), 9 states have call predecessors, (20), 11 states have return successors, (25), 22 states have call predecessors, (25), 20 states have call successors, (25) [2025-01-10 02:35:35,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 265 transitions. [2025-01-10 02:35:35,110 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 265 transitions. Word has length 28 [2025-01-10 02:35:35,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:35:35,111 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 265 transitions. [2025-01-10 02:35:35,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-10 02:35:35,111 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 265 transitions. [2025-01-10 02:35:35,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-01-10 02:35:35,112 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:35:35,112 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:35:35,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-01-10 02:35:35,112 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_47_to_56_0Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2025-01-10 02:35:35,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:35:35,112 INFO L85 PathProgramCache]: Analyzing trace with hash 840395001, now seen corresponding path program 1 times [2025-01-10 02:35:35,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:35:35,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349805704] [2025-01-10 02:35:35,113 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:35,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:35:35,124 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-01-10 02:35:35,140 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-01-10 02:35:35,141 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:35,141 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-10 02:35:35,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1305447021] [2025-01-10 02:35:35,142 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:35,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:35,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:35:35,144 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:35:35,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-01-10 02:35:35,225 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-01-10 02:35:35,281 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-01-10 02:35:35,281 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:35,281 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:35:35,287 INFO L256 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 115 conjuncts are in the unsatisfiable core [2025-01-10 02:35:35,291 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:35:35,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-10 02:35:35,384 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 23 treesize of output 15 [2025-01-10 02:35:35,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-10 02:35:35,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2025-01-10 02:35:35,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-10 02:35:35,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-10 02:35:35,518 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 23 treesize of output 15 [2025-01-10 02:35:35,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-01-10 02:35:35,625 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 19 treesize of output 11 [2025-01-10 02:35:35,785 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-10 02:35:35,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 25 [2025-01-10 02:35:35,809 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 02:35:35,810 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 02:35:35,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:35:35,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349805704] [2025-01-10 02:35:35,810 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-10 02:35:35,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305447021] [2025-01-10 02:35:35,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305447021] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:35:35,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:35:35,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2025-01-10 02:35:35,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080101513] [2025-01-10 02:35:35,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:35:35,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-01-10 02:35:35,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:35:35,811 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-01-10 02:35:35,811 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2025-01-10 02:35:35,811 INFO L87 Difference]: Start difference. First operand 220 states and 265 transitions. Second operand has 19 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 5 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-10 02:35:36,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:35:36,756 INFO L93 Difference]: Finished difference Result 297 states and 349 transitions. [2025-01-10 02:35:36,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-01-10 02:35:36,757 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 5 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2025-01-10 02:35:36,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:35:36,758 INFO L225 Difference]: With dead ends: 297 [2025-01-10 02:35:36,758 INFO L226 Difference]: Without dead ends: 296 [2025-01-10 02:35:36,759 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=108, Invalid=648, Unknown=0, NotChecked=0, Total=756 [2025-01-10 02:35:36,759 INFO L435 NwaCegarLoop]: 122 mSDtfsCounter, 297 mSDsluCounter, 1408 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 1530 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-01-10 02:35:36,759 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 1530 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 666 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-01-10 02:35:36,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2025-01-10 02:35:36,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 270. [2025-01-10 02:35:36,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 180 states have (on average 1.5944444444444446) internal successors, (287), 233 states have internal predecessors, (287), 27 states have call successors, (27), 11 states have call predecessors, (27), 13 states have return successors, (31), 29 states have call predecessors, (31), 27 states have call successors, (31) [2025-01-10 02:35:36,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 345 transitions. [2025-01-10 02:35:36,770 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 345 transitions. Word has length 29 [2025-01-10 02:35:36,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:35:36,770 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 345 transitions. [2025-01-10 02:35:36,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 5 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-10 02:35:36,771 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 345 transitions. [2025-01-10 02:35:36,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-01-10 02:35:36,771 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:35:36,771 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:35:36,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-01-10 02:35:36,971 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,SelfDestructingSolverStorable7 [2025-01-10 02:35:36,972 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_33_to_70_0Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2025-01-10 02:35:36,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:35:36,973 INFO L85 PathProgramCache]: Analyzing trace with hash -622708004, now seen corresponding path program 1 times [2025-01-10 02:35:36,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:35:36,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684794962] [2025-01-10 02:35:36,973 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:36,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:35:36,983 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-01-10 02:35:36,995 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-01-10 02:35:36,995 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:36,995 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-10 02:35:36,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1068558482] [2025-01-10 02:35:36,996 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:36,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:36,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:35:36,998 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:35:37,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-01-10 02:35:37,084 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-01-10 02:35:37,125 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-01-10 02:35:37,125 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:37,125 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:35:37,127 INFO L256 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-01-10 02:35:37,129 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:35:37,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-10 02:35:37,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-10 02:35:37,250 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-10 02:35:37,250 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 02:35:37,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:35:37,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684794962] [2025-01-10 02:35:37,251 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-10 02:35:37,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068558482] [2025-01-10 02:35:37,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068558482] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:35:37,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:35:37,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-10 02:35:37,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66022694] [2025-01-10 02:35:37,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:35:37,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-10 02:35:37,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:35:37,252 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-10 02:35:37,252 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-01-10 02:35:37,253 INFO L87 Difference]: Start difference. First operand 270 states and 345 transitions. Second operand has 7 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-10 02:35:37,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:35:37,415 INFO L93 Difference]: Finished difference Result 303 states and 350 transitions. [2025-01-10 02:35:37,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-10 02:35:37,415 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2025-01-10 02:35:37,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:35:37,417 INFO L225 Difference]: With dead ends: 303 [2025-01-10 02:35:37,417 INFO L226 Difference]: Without dead ends: 300 [2025-01-10 02:35:37,417 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-01-10 02:35:37,418 INFO L435 NwaCegarLoop]: 147 mSDtfsCounter, 84 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-10 02:35:37,418 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 754 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-10 02:35:37,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2025-01-10 02:35:37,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 270. [2025-01-10 02:35:37,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 180 states have (on average 1.5833333333333333) internal successors, (285), 234 states have internal predecessors, (285), 27 states have call successors, (27), 12 states have call predecessors, (27), 13 states have return successors, (30), 28 states have call predecessors, (30), 27 states have call successors, (30) [2025-01-10 02:35:37,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 342 transitions. [2025-01-10 02:35:37,431 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 342 transitions. Word has length 29 [2025-01-10 02:35:37,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:35:37,432 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 342 transitions. [2025-01-10 02:35:37,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-10 02:35:37,432 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 342 transitions. [2025-01-10 02:35:37,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-01-10 02:35:37,432 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:35:37,432 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:35:37,441 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-01-10 02:35:37,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:37,637 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_47_to_56_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2025-01-10 02:35:37,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:35:37,637 INFO L85 PathProgramCache]: Analyzing trace with hash 282441298, now seen corresponding path program 1 times [2025-01-10 02:35:37,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:35:37,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780541285] [2025-01-10 02:35:37,638 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:37,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:35:37,648 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-01-10 02:35:37,662 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-01-10 02:35:37,662 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:37,663 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-10 02:35:37,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1361380238] [2025-01-10 02:35:37,664 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:37,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:37,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:35:37,668 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:35:37,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-01-10 02:35:37,781 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-01-10 02:35:37,839 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-01-10 02:35:37,840 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:37,840 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:35:37,847 INFO L256 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-01-10 02:35:37,849 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:35:37,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-10 02:35:37,966 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-10 02:35:37,967 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 02:35:37,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:35:37,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780541285] [2025-01-10 02:35:37,968 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-10 02:35:37,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361380238] [2025-01-10 02:35:37,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361380238] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:35:37,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:35:37,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-01-10 02:35:37,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080593597] [2025-01-10 02:35:37,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:35:37,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-10 02:35:37,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:35:37,969 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-10 02:35:37,969 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2025-01-10 02:35:37,969 INFO L87 Difference]: Start difference. First operand 270 states and 342 transitions. Second operand has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-10 02:35:38,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:35:38,208 INFO L93 Difference]: Finished difference Result 295 states and 342 transitions. [2025-01-10 02:35:38,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-10 02:35:38,209 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2025-01-10 02:35:38,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:35:38,211 INFO L225 Difference]: With dead ends: 295 [2025-01-10 02:35:38,211 INFO L226 Difference]: Without dead ends: 294 [2025-01-10 02:35:38,212 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2025-01-10 02:35:38,212 INFO L435 NwaCegarLoop]: 140 mSDtfsCounter, 146 mSDsluCounter, 1035 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-10 02:35:38,213 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 1175 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-10 02:35:38,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2025-01-10 02:35:38,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 270. [2025-01-10 02:35:38,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 180 states have (on average 1.5722222222222222) internal successors, (283), 234 states have internal predecessors, (283), 27 states have call successors, (27), 12 states have call predecessors, (27), 13 states have return successors, (30), 28 states have call predecessors, (30), 27 states have call successors, (30) [2025-01-10 02:35:38,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 340 transitions. [2025-01-10 02:35:38,231 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 340 transitions. Word has length 30 [2025-01-10 02:35:38,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:35:38,231 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 340 transitions. [2025-01-10 02:35:38,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-10 02:35:38,231 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 340 transitions. [2025-01-10 02:35:38,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-01-10 02:35:38,232 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:35:38,232 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:35:38,240 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-01-10 02:35:38,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:38,433 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_33_to_70_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2025-01-10 02:35:38,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:35:38,434 INFO L85 PathProgramCache]: Analyzing trace with hash -2124078822, now seen corresponding path program 1 times [2025-01-10 02:35:38,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:35:38,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860305619] [2025-01-10 02:35:38,434 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:38,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:35:38,446 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-01-10 02:35:38,464 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-01-10 02:35:38,464 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:38,464 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-10 02:35:38,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1882034650] [2025-01-10 02:35:38,465 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:38,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:38,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:35:38,467 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:35:38,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-01-10 02:35:38,564 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-01-10 02:35:38,606 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-01-10 02:35:38,606 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:38,606 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:35:38,608 INFO L256 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-10 02:35:38,612 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:35:38,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-10 02:35:38,642 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-10 02:35:38,643 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 02:35:38,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:35:38,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860305619] [2025-01-10 02:35:38,643 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-10 02:35:38,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882034650] [2025-01-10 02:35:38,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882034650] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:35:38,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:35:38,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 02:35:38,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842118205] [2025-01-10 02:35:38,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:35:38,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 02:35:38,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:35:38,644 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 02:35:38,645 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 02:35:38,645 INFO L87 Difference]: Start difference. First operand 270 states and 340 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-10 02:35:38,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:35:38,947 INFO L93 Difference]: Finished difference Result 289 states and 362 transitions. [2025-01-10 02:35:38,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 02:35:38,947 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2025-01-10 02:35:38,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:35:38,949 INFO L225 Difference]: With dead ends: 289 [2025-01-10 02:35:38,950 INFO L226 Difference]: Without dead ends: 287 [2025-01-10 02:35:38,951 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 02:35:38,951 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 86 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-10 02:35:38,951 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 241 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-10 02:35:38,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2025-01-10 02:35:38,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 281. [2025-01-10 02:35:38,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 190 states have (on average 1.5526315789473684) internal successors, (295), 243 states have internal predecessors, (295), 27 states have call successors, (27), 12 states have call predecessors, (27), 14 states have return successors, (31), 29 states have call predecessors, (31), 27 states have call successors, (31) [2025-01-10 02:35:38,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 353 transitions. [2025-01-10 02:35:38,986 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 353 transitions. Word has length 30 [2025-01-10 02:35:38,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:35:38,986 INFO L471 AbstractCegarLoop]: Abstraction has 281 states and 353 transitions. [2025-01-10 02:35:38,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-10 02:35:38,986 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 353 transitions. [2025-01-10 02:35:38,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-01-10 02:35:38,988 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:35:38,988 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:35:38,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-01-10 02:35:39,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:39,189 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_47_to_56_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2025-01-10 02:35:39,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:35:39,190 INFO L85 PathProgramCache]: Analyzing trace with hash 165745691, now seen corresponding path program 1 times [2025-01-10 02:35:39,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:35:39,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359281943] [2025-01-10 02:35:39,190 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:39,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:35:39,202 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-01-10 02:35:39,216 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-01-10 02:35:39,217 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:39,217 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-10 02:35:39,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1969493365] [2025-01-10 02:35:39,218 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:39,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:39,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:35:39,220 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:35:39,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-01-10 02:35:39,323 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-01-10 02:35:39,375 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-01-10 02:35:39,375 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:39,375 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:35:39,379 INFO L256 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 172 conjuncts are in the unsatisfiable core [2025-01-10 02:35:39,383 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:35:39,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-10 02:35:39,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-10 02:35:39,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-10 02:35:39,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-10 02:35:39,468 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 15 treesize of output 11 [2025-01-10 02:35:39,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2025-01-10 02:35:39,569 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 27 treesize of output 19 [2025-01-10 02:35:39,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2025-01-10 02:35:39,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-10 02:35:39,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-10 02:35:39,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2025-01-10 02:35:39,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-01-10 02:35:39,843 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-10 02:35:39,843 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 02:35:39,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:35:39,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359281943] [2025-01-10 02:35:39,843 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-10 02:35:39,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969493365] [2025-01-10 02:35:39,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969493365] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:35:39,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:35:39,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2025-01-10 02:35:39,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477936860] [2025-01-10 02:35:39,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:35:39,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-10 02:35:39,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:35:39,844 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-10 02:35:39,844 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2025-01-10 02:35:39,844 INFO L87 Difference]: Start difference. First operand 281 states and 353 transitions. Second operand has 16 states, 12 states have (on average 1.75) internal successors, (21), 13 states have internal predecessors, (21), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-10 02:35:40,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:35:40,574 INFO L93 Difference]: Finished difference Result 304 states and 353 transitions. [2025-01-10 02:35:40,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-10 02:35:40,575 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 1.75) internal successors, (21), 13 states have internal predecessors, (21), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 31 [2025-01-10 02:35:40,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:35:40,576 INFO L225 Difference]: With dead ends: 304 [2025-01-10 02:35:40,576 INFO L226 Difference]: Without dead ends: 303 [2025-01-10 02:35:40,576 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2025-01-10 02:35:40,577 INFO L435 NwaCegarLoop]: 123 mSDtfsCounter, 282 mSDsluCounter, 1374 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 1497 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-01-10 02:35:40,577 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 1497 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-01-10 02:35:40,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2025-01-10 02:35:40,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 281. [2025-01-10 02:35:40,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 190 states have (on average 1.5473684210526315) internal successors, (294), 243 states have internal predecessors, (294), 27 states have call successors, (27), 12 states have call predecessors, (27), 14 states have return successors, (31), 29 states have call predecessors, (31), 27 states have call successors, (31) [2025-01-10 02:35:40,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 352 transitions. [2025-01-10 02:35:40,609 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 352 transitions. Word has length 31 [2025-01-10 02:35:40,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:35:40,609 INFO L471 AbstractCegarLoop]: Abstraction has 281 states and 352 transitions. [2025-01-10 02:35:40,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 1.75) internal successors, (21), 13 states have internal predecessors, (21), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-10 02:35:40,610 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 352 transitions. [2025-01-10 02:35:40,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-01-10 02:35:40,610 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:35:40,610 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:35:40,618 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-01-10 02:35:40,811 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,SelfDestructingSolverStorable11 [2025-01-10 02:35:40,811 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting func_to_recursive_line_33_to_70_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2025-01-10 02:35:40,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:35:40,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1130278500, now seen corresponding path program 1 times [2025-01-10 02:35:40,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:35:40,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526469581] [2025-01-10 02:35:40,812 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:40,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:35:40,825 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-01-10 02:35:40,833 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-01-10 02:35:40,833 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:40,833 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:35:41,002 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-10 02:35:41,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:35:41,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526469581] [2025-01-10 02:35:41,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526469581] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:35:41,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:35:41,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-10 02:35:41,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292830463] [2025-01-10 02:35:41,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:35:41,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-10 02:35:41,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:35:41,004 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-10 02:35:41,004 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-01-10 02:35:41,005 INFO L87 Difference]: Start difference. First operand 281 states and 352 transitions. Second operand has 7 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-10 02:35:41,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:35:41,134 INFO L93 Difference]: Finished difference Result 290 states and 362 transitions. [2025-01-10 02:35:41,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-10 02:35:41,135 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2025-01-10 02:35:41,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:35:41,136 INFO L225 Difference]: With dead ends: 290 [2025-01-10 02:35:41,136 INFO L226 Difference]: Without dead ends: 289 [2025-01-10 02:35:41,136 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-01-10 02:35:41,137 INFO L435 NwaCegarLoop]: 150 mSDtfsCounter, 10 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-10 02:35:41,137 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 867 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-10 02:35:41,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2025-01-10 02:35:41,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 286. [2025-01-10 02:35:41,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 195 states have (on average 1.5435897435897437) internal successors, (301), 248 states have internal predecessors, (301), 27 states have call successors, (27), 12 states have call predecessors, (27), 14 states have return successors, (31), 29 states have call predecessors, (31), 27 states have call successors, (31) [2025-01-10 02:35:41,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 359 transitions. [2025-01-10 02:35:41,150 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 359 transitions. Word has length 32 [2025-01-10 02:35:41,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:35:41,150 INFO L471 AbstractCegarLoop]: Abstraction has 286 states and 359 transitions. [2025-01-10 02:35:41,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-10 02:35:41,150 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 359 transitions. [2025-01-10 02:35:41,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-01-10 02:35:41,151 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:35:41,151 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:35:41,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-01-10 02:35:41,151 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting func_to_recursive_line_33_to_70_0Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2025-01-10 02:35:41,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:35:41,151 INFO L85 PathProgramCache]: Analyzing trace with hash -678895008, now seen corresponding path program 1 times [2025-01-10 02:35:41,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:35:41,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977982628] [2025-01-10 02:35:41,151 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:41,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:35:41,162 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-01-10 02:35:41,174 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-01-10 02:35:41,174 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:41,174 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-10 02:35:41,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1511858330] [2025-01-10 02:35:41,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:41,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:41,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:35:41,182 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:35:41,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-01-10 02:35:41,280 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-01-10 02:35:41,318 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-01-10 02:35:41,318 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:41,318 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:35:41,320 INFO L256 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-01-10 02:35:41,322 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:35:41,325 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-10 02:35:41,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-10 02:35:41,479 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-10 02:35:41,481 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 02:35:41,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:35:41,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977982628] [2025-01-10 02:35:41,482 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-10 02:35:41,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511858330] [2025-01-10 02:35:41,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511858330] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:35:41,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:35:41,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-01-10 02:35:41,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961551144] [2025-01-10 02:35:41,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:35:41,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-10 02:35:41,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:35:41,483 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-10 02:35:41,483 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-01-10 02:35:41,483 INFO L87 Difference]: Start difference. First operand 286 states and 359 transitions. Second operand has 8 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-10 02:35:42,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:35:42,012 INFO L93 Difference]: Finished difference Result 315 states and 365 transitions. [2025-01-10 02:35:42,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-10 02:35:42,013 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2025-01-10 02:35:42,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:35:42,014 INFO L225 Difference]: With dead ends: 315 [2025-01-10 02:35:42,015 INFO L226 Difference]: Without dead ends: 314 [2025-01-10 02:35:42,016 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2025-01-10 02:35:42,016 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 85 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-10 02:35:42,016 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 517 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-10 02:35:42,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2025-01-10 02:35:42,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 292. [2025-01-10 02:35:42,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 200 states have (on average 1.53) internal successors, (306), 253 states have internal predecessors, (306), 27 states have call successors, (27), 13 states have call predecessors, (27), 15 states have return successors, (31), 29 states have call predecessors, (31), 27 states have call successors, (31) [2025-01-10 02:35:42,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 364 transitions. [2025-01-10 02:35:42,029 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 364 transitions. Word has length 33 [2025-01-10 02:35:42,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:35:42,029 INFO L471 AbstractCegarLoop]: Abstraction has 292 states and 364 transitions. [2025-01-10 02:35:42,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-10 02:35:42,030 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 364 transitions. [2025-01-10 02:35:42,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-01-10 02:35:42,031 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:35:42,031 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:35:42,038 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 [2025-01-10 02:35:42,231 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,SelfDestructingSolverStorable13 [2025-01-10 02:35:42,232 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting func_to_recursive_line_47_to_56_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2025-01-10 02:35:42,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:35:42,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1491886039, now seen corresponding path program 1 times [2025-01-10 02:35:42,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:35:42,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328763776] [2025-01-10 02:35:42,232 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:42,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:35:42,244 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-01-10 02:35:42,255 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-01-10 02:35:42,255 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:42,255 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-10 02:35:42,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [810734810] [2025-01-10 02:35:42,257 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:42,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:42,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:35:42,260 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:35:42,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-01-10 02:35:42,361 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-01-10 02:35:42,410 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-01-10 02:35:42,410 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:42,410 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:35:42,412 INFO L256 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-01-10 02:35:42,414 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:35:42,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-10 02:35:42,500 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-10 02:35:42,500 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 02:35:42,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:35:42,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328763776] [2025-01-10 02:35:42,500 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-10 02:35:42,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810734810] [2025-01-10 02:35:42,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810734810] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:35:42,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:35:42,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-01-10 02:35:42,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055248748] [2025-01-10 02:35:42,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:35:42,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-10 02:35:42,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:35:42,501 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-10 02:35:42,501 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-01-10 02:35:42,501 INFO L87 Difference]: Start difference. First operand 292 states and 364 transitions. Second operand has 11 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-10 02:35:42,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:35:42,702 INFO L93 Difference]: Finished difference Result 316 states and 364 transitions. [2025-01-10 02:35:42,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-10 02:35:42,703 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2025-01-10 02:35:42,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:35:42,704 INFO L225 Difference]: With dead ends: 316 [2025-01-10 02:35:42,704 INFO L226 Difference]: Without dead ends: 314 [2025-01-10 02:35:42,704 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2025-01-10 02:35:42,704 INFO L435 NwaCegarLoop]: 137 mSDtfsCounter, 142 mSDsluCounter, 876 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-10 02:35:42,704 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 1013 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-10 02:35:42,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2025-01-10 02:35:42,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 292. [2025-01-10 02:35:42,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 200 states have (on average 1.51) internal successors, (302), 253 states have internal predecessors, (302), 27 states have call successors, (27), 13 states have call predecessors, (27), 15 states have return successors, (31), 29 states have call predecessors, (31), 27 states have call successors, (31) [2025-01-10 02:35:42,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 360 transitions. [2025-01-10 02:35:42,731 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 360 transitions. Word has length 38 [2025-01-10 02:35:42,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:35:42,731 INFO L471 AbstractCegarLoop]: Abstraction has 292 states and 360 transitions. [2025-01-10 02:35:42,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-10 02:35:42,732 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 360 transitions. [2025-01-10 02:35:42,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2025-01-10 02:35:42,732 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:35:42,732 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:35:42,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-01-10 02:35:42,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:42,937 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting func_to_recursive_line_47_to_56_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2025-01-10 02:35:42,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:35:42,938 INFO L85 PathProgramCache]: Analyzing trace with hash 816595019, now seen corresponding path program 1 times [2025-01-10 02:35:42,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:35:42,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679001865] [2025-01-10 02:35:42,938 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:42,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:35:42,949 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-01-10 02:35:42,965 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-01-10 02:35:42,969 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:42,969 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-10 02:35:42,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [897103511] [2025-01-10 02:35:42,971 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:42,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:42,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:35:42,976 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:35:42,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-01-10 02:35:43,103 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-01-10 02:35:43,165 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-01-10 02:35:43,165 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:43,166 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:35:43,169 INFO L256 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 64 conjuncts are in the unsatisfiable core [2025-01-10 02:35:43,171 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:35:43,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-10 02:35:43,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-10 02:35:43,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-01-10 02:35:43,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-01-10 02:35:43,498 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 02:35:43,499 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 02:35:43,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:35:43,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679001865] [2025-01-10 02:35:43,500 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-10 02:35:43,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897103511] [2025-01-10 02:35:43,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897103511] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:35:43,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:35:43,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-01-10 02:35:43,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105232965] [2025-01-10 02:35:43,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:35:43,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-01-10 02:35:43,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:35:43,501 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-01-10 02:35:43,501 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2025-01-10 02:35:43,501 INFO L87 Difference]: Start difference. First operand 292 states and 360 transitions. Second operand has 15 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-10 02:35:47,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 02:35:51,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-01-10 02:35:55,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-01-10 02:35:59,827 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-01-10 02:35:59,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:35:59,960 INFO L93 Difference]: Finished difference Result 318 states and 362 transitions. [2025-01-10 02:35:59,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-10 02:35:59,960 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 40 [2025-01-10 02:35:59,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:35:59,961 INFO L225 Difference]: With dead ends: 318 [2025-01-10 02:35:59,961 INFO L226 Difference]: Without dead ends: 317 [2025-01-10 02:35:59,962 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2025-01-10 02:35:59,962 INFO L435 NwaCegarLoop]: 130 mSDtfsCounter, 164 mSDsluCounter, 1350 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 24 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1480 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.4s IncrementalHoareTripleChecker+Time [2025-01-10 02:35:59,962 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 1480 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 431 Invalid, 4 Unknown, 0 Unchecked, 16.4s Time] [2025-01-10 02:35:59,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2025-01-10 02:35:59,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 292. [2025-01-10 02:35:59,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 200 states have (on average 1.5) internal successors, (300), 253 states have internal predecessors, (300), 27 states have call successors, (27), 13 states have call predecessors, (27), 15 states have return successors, (31), 29 states have call predecessors, (31), 27 states have call successors, (31) [2025-01-10 02:35:59,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 358 transitions. [2025-01-10 02:35:59,989 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 358 transitions. Word has length 40 [2025-01-10 02:35:59,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:35:59,990 INFO L471 AbstractCegarLoop]: Abstraction has 292 states and 358 transitions. [2025-01-10 02:35:59,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-10 02:35:59,990 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 358 transitions. [2025-01-10 02:35:59,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2025-01-10 02:35:59,990 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:35:59,990 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:35:59,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-01-10 02:36:00,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:36:00,191 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting func_to_recursive_line_47_to_56_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2025-01-10 02:36:00,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:36:00,192 INFO L85 PathProgramCache]: Analyzing trace with hash -455358132, now seen corresponding path program 1 times [2025-01-10 02:36:00,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:36:00,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628746873] [2025-01-10 02:36:00,192 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:36:00,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:36:00,202 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-01-10 02:36:00,214 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-01-10 02:36:00,214 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:36:00,214 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-10 02:36:00,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [599069069] [2025-01-10 02:36:00,216 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:36:00,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:36:00,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:36:00,217 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:36:00,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-01-10 02:36:00,333 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-01-10 02:36:00,394 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-01-10 02:36:00,395 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:36:00,395 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:36:00,398 INFO L256 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 116 conjuncts are in the unsatisfiable core [2025-01-10 02:36:00,401 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:36:00,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-10 02:36:00,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-10 02:36:00,510 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-10 02:36:00,510 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 30 treesize of output 30 [2025-01-10 02:36:00,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-10 02:36:00,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-10 02:36:00,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2025-01-10 02:36:00,606 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 19 treesize of output 11 [2025-01-10 02:36:00,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-10 02:36:00,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-01-10 02:36:00,702 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 19 treesize of output 11 [2025-01-10 02:36:00,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2025-01-10 02:36:00,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-01-10 02:36:00,978 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 02:36:00,978 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 02:36:00,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:36:00,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628746873] [2025-01-10 02:36:00,978 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-10 02:36:00,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599069069] [2025-01-10 02:36:00,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599069069] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:36:00,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:36:00,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2025-01-10 02:36:00,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932293278] [2025-01-10 02:36:00,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:36:00,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-01-10 02:36:00,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:36:00,979 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-01-10 02:36:00,979 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2025-01-10 02:36:00,979 INFO L87 Difference]: Start difference. First operand 292 states and 358 transitions. Second operand has 20 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 16 states have internal predecessors, (32), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-10 02:36:05,091 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] [2025-01-10 02:36:09,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 02:36:13,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 02:36:14,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:36:14,345 INFO L93 Difference]: Finished difference Result 336 states and 360 transitions. [2025-01-10 02:36:14,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-01-10 02:36:14,346 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 16 states have internal predecessors, (32), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 41 [2025-01-10 02:36:14,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:36:14,347 INFO L225 Difference]: With dead ends: 336 [2025-01-10 02:36:14,347 INFO L226 Difference]: Without dead ends: 335 [2025-01-10 02:36:14,348 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=149, Invalid=1041, Unknown=0, NotChecked=0, Total=1190 [2025-01-10 02:36:14,348 INFO L435 NwaCegarLoop]: 135 mSDtfsCounter, 452 mSDsluCounter, 1749 mSDsCounter, 0 mSdLazyCounter, 839 mSolverCounterSat, 64 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 1884 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 839 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2025-01-10 02:36:14,348 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 1884 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 839 Invalid, 3 Unknown, 0 Unchecked, 12.9s Time] [2025-01-10 02:36:14,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2025-01-10 02:36:14,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 292. [2025-01-10 02:36:14,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 200 states have (on average 1.495) internal successors, (299), 253 states have internal predecessors, (299), 27 states have call successors, (27), 13 states have call predecessors, (27), 15 states have return successors, (31), 29 states have call predecessors, (31), 27 states have call successors, (31) [2025-01-10 02:36:14,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 357 transitions. [2025-01-10 02:36:14,376 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 357 transitions. Word has length 41 [2025-01-10 02:36:14,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:36:14,376 INFO L471 AbstractCegarLoop]: Abstraction has 292 states and 357 transitions. [2025-01-10 02:36:14,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 16 states have internal predecessors, (32), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-10 02:36:14,376 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 357 transitions. [2025-01-10 02:36:14,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-01-10 02:36:14,376 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:36:14,376 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:36:14,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-01-10 02:36:14,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-01-10 02:36:14,578 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting func_to_recursive_line_47_to_56_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2025-01-10 02:36:14,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:36:14,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1231200147, now seen corresponding path program 1 times [2025-01-10 02:36:14,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:36:14,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404991203] [2025-01-10 02:36:14,579 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:36:14,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:36:14,589 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-01-10 02:36:14,603 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-01-10 02:36:14,603 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:36:14,603 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-10 02:36:14,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2046231605] [2025-01-10 02:36:14,605 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:36:14,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:36:14,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:36:14,607 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:36:14,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-01-10 02:36:14,716 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-01-10 02:36:14,765 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-01-10 02:36:14,765 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:36:14,765 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:36:14,768 INFO L256 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 100 conjuncts are in the unsatisfiable core [2025-01-10 02:36:14,770 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:36:14,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-10 02:36:14,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-10 02:36:14,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-10 02:36:15,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2025-01-10 02:36:15,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2025-01-10 02:36:15,110 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-10 02:36:15,110 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 02:36:15,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:36:15,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404991203] [2025-01-10 02:36:15,110 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-10 02:36:15,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046231605] [2025-01-10 02:36:15,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046231605] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:36:15,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:36:15,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-01-10 02:36:15,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356518112] [2025-01-10 02:36:15,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:36:15,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-10 02:36:15,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:36:15,111 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-10 02:36:15,111 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2025-01-10 02:36:15,111 INFO L87 Difference]: Start difference. First operand 292 states and 357 transitions. Second operand has 14 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-10 02:36:15,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:36:15,610 INFO L93 Difference]: Finished difference Result 313 states and 357 transitions. [2025-01-10 02:36:15,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-01-10 02:36:15,611 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 42 [2025-01-10 02:36:15,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:36:15,612 INFO L225 Difference]: With dead ends: 313 [2025-01-10 02:36:15,612 INFO L226 Difference]: Without dead ends: 312 [2025-01-10 02:36:15,612 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2025-01-10 02:36:15,612 INFO L435 NwaCegarLoop]: 128 mSDtfsCounter, 288 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 969 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-10 02:36:15,613 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 969 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-10 02:36:15,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2025-01-10 02:36:15,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 292. [2025-01-10 02:36:15,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 200 states have (on average 1.485) internal successors, (297), 253 states have internal predecessors, (297), 27 states have call successors, (27), 13 states have call predecessors, (27), 15 states have return successors, (31), 29 states have call predecessors, (31), 27 states have call successors, (31) [2025-01-10 02:36:15,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 355 transitions. [2025-01-10 02:36:15,628 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 355 transitions. Word has length 42 [2025-01-10 02:36:15,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:36:15,628 INFO L471 AbstractCegarLoop]: Abstraction has 292 states and 355 transitions. [2025-01-10 02:36:15,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-10 02:36:15,628 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 355 transitions. [2025-01-10 02:36:15,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-01-10 02:36:15,628 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:36:15,628 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:36:15,636 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-01-10 02:36:15,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-01-10 02:36:15,829 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting func_to_recursive_line_47_to_56_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2025-01-10 02:36:15,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:36:15,830 INFO L85 PathProgramCache]: Analyzing trace with hash 487501166, now seen corresponding path program 1 times [2025-01-10 02:36:15,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:36:15,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054101083] [2025-01-10 02:36:15,830 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:36:15,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:36:15,841 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-01-10 02:36:15,855 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-01-10 02:36:15,855 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:36:15,855 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-10 02:36:15,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1923356748] [2025-01-10 02:36:15,857 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:36:15,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:36:15,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:36:15,858 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:36:15,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-01-10 02:36:15,971 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-01-10 02:36:16,021 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-01-10 02:36:16,022 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:36:16,022 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:36:16,025 INFO L256 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 126 conjuncts are in the unsatisfiable core [2025-01-10 02:36:16,028 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:36:16,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-10 02:36:16,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-10 02:36:16,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-10 02:36:16,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-10 02:36:16,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2025-01-10 02:36:16,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-01-10 02:36:16,391 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-10 02:36:16,391 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 02:36:16,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:36:16,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054101083] [2025-01-10 02:36:16,392 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-10 02:36:16,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923356748] [2025-01-10 02:36:16,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923356748] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:36:16,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:36:16,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-01-10 02:36:16,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429153804] [2025-01-10 02:36:16,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:36:16,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-10 02:36:16,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:36:16,393 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-10 02:36:16,393 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2025-01-10 02:36:16,393 INFO L87 Difference]: Start difference. First operand 292 states and 355 transitions. Second operand has 14 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-10 02:36:16,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:36:16,906 INFO L93 Difference]: Finished difference Result 312 states and 355 transitions. [2025-01-10 02:36:16,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-01-10 02:36:16,906 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 43 [2025-01-10 02:36:16,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:36:16,908 INFO L225 Difference]: With dead ends: 312 [2025-01-10 02:36:16,908 INFO L226 Difference]: Without dead ends: 310 [2025-01-10 02:36:16,908 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 26 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2025-01-10 02:36:16,908 INFO L435 NwaCegarLoop]: 129 mSDtfsCounter, 292 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 1275 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-10 02:36:16,908 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 1275 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-10 02:36:16,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2025-01-10 02:36:16,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 292. [2025-01-10 02:36:16,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 200 states have (on average 1.47) internal successors, (294), 253 states have internal predecessors, (294), 27 states have call successors, (27), 13 states have call predecessors, (27), 15 states have return successors, (31), 29 states have call predecessors, (31), 27 states have call successors, (31) [2025-01-10 02:36:16,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 352 transitions. [2025-01-10 02:36:16,923 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 352 transitions. Word has length 43 [2025-01-10 02:36:16,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:36:16,923 INFO L471 AbstractCegarLoop]: Abstraction has 292 states and 352 transitions. [2025-01-10 02:36:16,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-10 02:36:16,923 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 352 transitions. [2025-01-10 02:36:16,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-01-10 02:36:16,923 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:36:16,923 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:36:16,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-01-10 02:36:17,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:36:17,124 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2025-01-10 02:36:17,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:36:17,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1144905163, now seen corresponding path program 1 times [2025-01-10 02:36:17,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:36:17,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616604172] [2025-01-10 02:36:17,125 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:36:17,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:36:17,135 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-01-10 02:36:17,145 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-01-10 02:36:17,146 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:36:17,146 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:36:17,621 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 02:36:17,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:36:17,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616604172] [2025-01-10 02:36:17,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616604172] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:36:17,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916157353] [2025-01-10 02:36:17,622 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:36:17,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:36:17,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:36:17,624 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:36:17,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-01-10 02:36:17,742 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-01-10 02:36:17,784 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-01-10 02:36:17,784 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:36:17,784 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:36:17,789 INFO L256 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-01-10 02:36:17,791 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:36:17,965 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 23 treesize of output 15 [2025-01-10 02:36:17,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-10 02:36:18,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-10 02:36:18,060 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 23 treesize of output 15 [2025-01-10 02:36:18,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-10 02:36:18,175 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 19 treesize of output 11 [2025-01-10 02:36:18,196 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 02:36:18,196 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:36:18,861 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 02:36:18,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916157353] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:36:18,861 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:36:18,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 17] total 38 [2025-01-10 02:36:18,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248400158] [2025-01-10 02:36:18,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:36:18,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2025-01-10 02:36:18,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:36:18,863 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2025-01-10 02:36:18,864 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1279, Unknown=0, NotChecked=0, Total=1406 [2025-01-10 02:36:18,865 INFO L87 Difference]: Start difference. First operand 292 states and 352 transitions. Second operand has 38 states, 33 states have (on average 2.3333333333333335) internal successors, (77), 34 states have internal predecessors, (77), 13 states have call successors, (15), 8 states have call predecessors, (15), 11 states have return successors, (14), 8 states have call predecessors, (14), 13 states have call successors, (14) [2025-01-10 02:36:22,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 02:36:24,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:36:24,344 INFO L93 Difference]: Finished difference Result 332 states and 394 transitions. [2025-01-10 02:36:24,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-01-10 02:36:24,344 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 33 states have (on average 2.3333333333333335) internal successors, (77), 34 states have internal predecessors, (77), 13 states have call successors, (15), 8 states have call predecessors, (15), 11 states have return successors, (14), 8 states have call predecessors, (14), 13 states have call successors, (14) Word has length 43 [2025-01-10 02:36:24,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:36:24,346 INFO L225 Difference]: With dead ends: 332 [2025-01-10 02:36:24,346 INFO L226 Difference]: Without dead ends: 303 [2025-01-10 02:36:24,347 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 63 SyntacticMatches, 4 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=335, Invalid=2635, Unknown=0, NotChecked=0, Total=2970 [2025-01-10 02:36:24,347 INFO L435 NwaCegarLoop]: 53 mSDtfsCounter, 474 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 1485 mSolverCounterSat, 111 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 1597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1485 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2025-01-10 02:36:24,347 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [475 Valid, 803 Invalid, 1597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1485 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2025-01-10 02:36:24,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2025-01-10 02:36:24,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 297. [2025-01-10 02:36:24,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 203 states have (on average 1.4729064039408868) internal successors, (299), 257 states have internal predecessors, (299), 28 states have call successors, (28), 13 states have call predecessors, (28), 16 states have return successors, (35), 30 states have call predecessors, (35), 28 states have call successors, (35) [2025-01-10 02:36:24,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 362 transitions. [2025-01-10 02:36:24,367 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 362 transitions. Word has length 43 [2025-01-10 02:36:24,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:36:24,367 INFO L471 AbstractCegarLoop]: Abstraction has 297 states and 362 transitions. [2025-01-10 02:36:24,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 33 states have (on average 2.3333333333333335) internal successors, (77), 34 states have internal predecessors, (77), 13 states have call successors, (15), 8 states have call predecessors, (15), 11 states have return successors, (14), 8 states have call predecessors, (14), 13 states have call successors, (14) [2025-01-10 02:36:24,367 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 362 transitions. [2025-01-10 02:36:24,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-01-10 02:36:24,368 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:36:24,368 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:36:24,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-01-10 02:36:24,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:36:24,568 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2025-01-10 02:36:24,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:36:24,569 INFO L85 PathProgramCache]: Analyzing trace with hash -755258004, now seen corresponding path program 1 times [2025-01-10 02:36:24,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:36:24,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095326434] [2025-01-10 02:36:24,569 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:36:24,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:36:24,585 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-01-10 02:36:24,599 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-01-10 02:36:24,599 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:36:24,599 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-10 02:36:24,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1327941780] [2025-01-10 02:36:24,600 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:36:24,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:36:24,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:36:24,602 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:36:24,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-01-10 02:36:24,733 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-01-10 02:36:24,832 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-01-10 02:36:24,832 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:36:24,832 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:36:24,836 INFO L256 TraceCheckSpWp]: Trace formula consists of 785 conjuncts, 89 conjuncts are in the unsatisfiable core [2025-01-10 02:36:24,842 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:36:24,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-10 02:36:24,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-10 02:36:24,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-10 02:36:24,999 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 19 treesize of output 11 [2025-01-10 02:36:25,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-01-10 02:36:25,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-01-10 02:36:25,167 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 02:36:25,167 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:36:25,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:36:25,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095326434] [2025-01-10 02:36:25,690 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-10 02:36:25,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327941780] [2025-01-10 02:36:25,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327941780] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:36:25,690 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-01-10 02:36:25,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2025-01-10 02:36:25,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228132722] [2025-01-10 02:36:25,690 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-01-10 02:36:25,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-10 02:36:25,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:36:25,690 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-10 02:36:25,691 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=541, Unknown=0, NotChecked=0, Total=600 [2025-01-10 02:36:25,691 INFO L87 Difference]: Start difference. First operand 297 states and 362 transitions. Second operand has 17 states, 14 states have (on average 2.5) internal successors, (35), 12 states have internal predecessors, (35), 6 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-10 02:36:29,699 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 02:36:33,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-01-10 02:36:38,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-01-10 02:36:42,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-01-10 02:36:46,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-01-10 02:36:46,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:36:46,665 INFO L93 Difference]: Finished difference Result 425 states and 486 transitions. [2025-01-10 02:36:46,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-01-10 02:36:46,666 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 2.5) internal successors, (35), 12 states have internal predecessors, (35), 6 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2025-01-10 02:36:46,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:36:46,667 INFO L225 Difference]: With dead ends: 425 [2025-01-10 02:36:46,667 INFO L226 Difference]: Without dead ends: 422 [2025-01-10 02:36:46,667 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=105, Invalid=887, Unknown=0, NotChecked=0, Total=992 [2025-01-10 02:36:46,668 INFO L435 NwaCegarLoop]: 211 mSDtfsCounter, 293 mSDsluCounter, 2158 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 22 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 2369 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.7s IncrementalHoareTripleChecker+Time [2025-01-10 02:36:46,668 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 2369 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 686 Invalid, 5 Unknown, 0 Unchecked, 20.7s Time] [2025-01-10 02:36:46,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2025-01-10 02:36:46,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 360. [2025-01-10 02:36:46,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 251 states have (on average 1.5059760956175299) internal successors, (378), 310 states have internal predecessors, (378), 38 states have call successors, (38), 16 states have call predecessors, (38), 21 states have return successors, (51), 38 states have call predecessors, (51), 38 states have call successors, (51) [2025-01-10 02:36:46,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 467 transitions. [2025-01-10 02:36:46,689 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 467 transitions. Word has length 45 [2025-01-10 02:36:46,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:36:46,689 INFO L471 AbstractCegarLoop]: Abstraction has 360 states and 467 transitions. [2025-01-10 02:36:46,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 2.5) internal successors, (35), 12 states have internal predecessors, (35), 6 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-10 02:36:46,689 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 467 transitions. [2025-01-10 02:36:46,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2025-01-10 02:36:46,690 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:36:46,690 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:36:46,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-01-10 02:36:46,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:36:46,890 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2025-01-10 02:36:46,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:36:46,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1938161607, now seen corresponding path program 1 times [2025-01-10 02:36:46,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:36:46,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427883944] [2025-01-10 02:36:46,891 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:36:46,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:36:46,904 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-01-10 02:36:46,920 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-01-10 02:36:46,920 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:36:46,920 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-10 02:36:46,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [682119321] [2025-01-10 02:36:46,922 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:36:46,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:36:46,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:36:46,924 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:36:46,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-01-10 02:36:47,069 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-01-10 02:36:47,157 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-01-10 02:36:47,157 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:36:47,157 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:36:47,166 INFO L256 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 117 conjuncts are in the unsatisfiable core [2025-01-10 02:36:47,170 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:36:47,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-10 02:36:47,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-10 02:36:47,292 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 11 treesize of output 7 [2025-01-10 02:36:47,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2025-01-10 02:36:47,419 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 19 treesize of output 11 [2025-01-10 02:36:47,681 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 [2025-01-10 02:36:47,962 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-10 02:36:47,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 25 [2025-01-10 02:36:47,990 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 02:36:47,990 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:36:48,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:36:48,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427883944] [2025-01-10 02:36:48,706 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-10 02:36:48,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682119321] [2025-01-10 02:36:48,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682119321] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:36:48,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-01-10 02:36:48,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2025-01-10 02:36:48,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234391922] [2025-01-10 02:36:48,706 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-01-10 02:36:48,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-01-10 02:36:48,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:36:48,707 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-01-10 02:36:48,707 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=715, Unknown=0, NotChecked=0, Total=812 [2025-01-10 02:36:48,707 INFO L87 Difference]: Start difference. First operand 360 states and 467 transitions. Second operand has 21 states, 18 states have (on average 2.0) internal successors, (36), 16 states have internal predecessors, (36), 6 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-10 02:36:50,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:36:50,422 INFO L93 Difference]: Finished difference Result 422 states and 483 transitions. [2025-01-10 02:36:50,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-01-10 02:36:50,422 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 2.0) internal successors, (36), 16 states have internal predecessors, (36), 6 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 46 [2025-01-10 02:36:50,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:36:50,424 INFO L225 Difference]: With dead ends: 422 [2025-01-10 02:36:50,424 INFO L226 Difference]: Without dead ends: 421 [2025-01-10 02:36:50,424 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=156, Invalid=1104, Unknown=0, NotChecked=0, Total=1260 [2025-01-10 02:36:50,425 INFO L435 NwaCegarLoop]: 205 mSDtfsCounter, 413 mSDsluCounter, 2269 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 2474 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-01-10 02:36:50,425 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [414 Valid, 2474 Invalid, 920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-01-10 02:36:50,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2025-01-10 02:36:50,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 360. [2025-01-10 02:36:50,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 251 states have (on average 1.50199203187251) internal successors, (377), 310 states have internal predecessors, (377), 38 states have call successors, (38), 16 states have call predecessors, (38), 21 states have return successors, (51), 38 states have call predecessors, (51), 38 states have call successors, (51) [2025-01-10 02:36:50,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 466 transitions. [2025-01-10 02:36:50,448 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 466 transitions. Word has length 46 [2025-01-10 02:36:50,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:36:50,449 INFO L471 AbstractCegarLoop]: Abstraction has 360 states and 466 transitions. [2025-01-10 02:36:50,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 2.0) internal successors, (36), 16 states have internal predecessors, (36), 6 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-10 02:36:50,449 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 466 transitions. [2025-01-10 02:36:50,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2025-01-10 02:36:50,449 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:36:50,449 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:36:50,459 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-01-10 02:36:50,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:36:50,650 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting func_to_recursive_line_47_to_56_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2025-01-10 02:36:50,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:36:50,650 INFO L85 PathProgramCache]: Analyzing trace with hash 46532366, now seen corresponding path program 1 times [2025-01-10 02:36:50,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:36:50,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097328895] [2025-01-10 02:36:50,650 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:36:50,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:36:50,665 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 47 statements into 1 equivalence classes. [2025-01-10 02:36:50,678 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-01-10 02:36:50,679 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:36:50,679 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-10 02:36:50,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1329348005] [2025-01-10 02:36:50,680 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:36:50,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:36:50,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:36:50,686 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:36:50,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-01-10 02:36:50,833 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 47 statements into 1 equivalence classes. [2025-01-10 02:36:50,921 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-01-10 02:36:50,921 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:36:50,921 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:36:50,926 INFO L256 TraceCheckSpWp]: Trace formula consists of 791 conjuncts, 138 conjuncts are in the unsatisfiable core [2025-01-10 02:36:50,929 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:36:50,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-10 02:36:51,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-10 02:36:51,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2025-01-10 02:36:51,116 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 27 treesize of output 19 [2025-01-10 02:36:51,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2025-01-10 02:36:51,144 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-10 02:36:51,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-10 02:36:51,242 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 27 treesize of output 19 [2025-01-10 02:36:51,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2025-01-10 02:36:51,364 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 19 treesize of output 11 [2025-01-10 02:36:51,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-01-10 02:36:51,576 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 02:36:51,576 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:36:52,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:36:52,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097328895] [2025-01-10 02:36:52,096 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-10 02:36:52,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329348005] [2025-01-10 02:36:52,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329348005] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:36:52,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-01-10 02:36:52,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2025-01-10 02:36:52,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036234314] [2025-01-10 02:36:52,096 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-01-10 02:36:52,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-10 02:36:52,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:36:52,097 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-10 02:36:52,097 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=953, Unknown=0, NotChecked=0, Total=1056 [2025-01-10 02:36:52,097 INFO L87 Difference]: Start difference. First operand 360 states and 466 transitions. Second operand has 23 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 7 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-10 02:36:56,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 02:36:57,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:36:57,717 INFO L93 Difference]: Finished difference Result 463 states and 561 transitions. [2025-01-10 02:36:57,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-01-10 02:36:57,717 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 7 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 47 [2025-01-10 02:36:57,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:36:57,720 INFO L225 Difference]: With dead ends: 463 [2025-01-10 02:36:57,720 INFO L226 Difference]: Without dead ends: 459 [2025-01-10 02:36:57,720 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=182, Invalid=1624, Unknown=0, NotChecked=0, Total=1806 [2025-01-10 02:36:57,721 INFO L435 NwaCegarLoop]: 142 mSDtfsCounter, 361 mSDsluCounter, 1944 mSDsCounter, 0 mSdLazyCounter, 1953 mSolverCounterSat, 35 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 2086 SdHoareTripleChecker+Invalid, 1989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1953 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2025-01-10 02:36:57,721 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 2086 Invalid, 1989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1953 Invalid, 1 Unknown, 0 Unchecked, 5.2s Time] [2025-01-10 02:36:57,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2025-01-10 02:36:57,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 416. [2025-01-10 02:36:57,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 296 states have (on average 1.5135135135135136) internal successors, (448), 357 states have internal predecessors, (448), 46 states have call successors, (46), 19 states have call predecessors, (46), 24 states have return successors, (61), 45 states have call predecessors, (61), 46 states have call successors, (61) [2025-01-10 02:36:57,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 555 transitions. [2025-01-10 02:36:57,773 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 555 transitions. Word has length 47 [2025-01-10 02:36:57,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:36:57,773 INFO L471 AbstractCegarLoop]: Abstraction has 416 states and 555 transitions. [2025-01-10 02:36:57,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 7 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-10 02:36:57,774 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 555 transitions. [2025-01-10 02:36:57,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2025-01-10 02:36:57,775 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:36:57,775 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:36:57,783 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-01-10 02:36:57,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:36:57,975 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting func_to_recursive_line_33_to_70_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2025-01-10 02:36:57,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:36:57,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1661903478, now seen corresponding path program 1 times [2025-01-10 02:36:57,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:36:57,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385109155] [2025-01-10 02:36:57,976 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:36:57,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:36:57,988 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 47 statements into 1 equivalence classes. [2025-01-10 02:36:57,993 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-01-10 02:36:57,993 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:36:57,993 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:36:58,308 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-01-10 02:36:58,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:36:58,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385109155] [2025-01-10 02:36:58,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385109155] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:36:58,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744741023] [2025-01-10 02:36:58,309 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:36:58,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:36:58,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:36:58,313 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:36:58,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-01-10 02:36:58,468 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 47 statements into 1 equivalence classes. [2025-01-10 02:36:58,530 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-01-10 02:36:58,530 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:36:58,530 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:36:58,532 INFO L256 TraceCheckSpWp]: Trace formula consists of 671 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-01-10 02:36:58,534 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:36:58,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-10 02:36:58,623 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 19 treesize of output 11 [2025-01-10 02:36:58,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-10 02:36:58,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-01-10 02:36:58,771 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-10 02:36:58,771 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:36:58,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744741023] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:36:58,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-10 02:36:58,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 17 [2025-01-10 02:36:58,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115819258] [2025-01-10 02:36:58,871 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-10 02:36:58,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-10 02:36:58,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:36:58,872 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-10 02:36:58,872 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2025-01-10 02:36:58,872 INFO L87 Difference]: Start difference. First operand 416 states and 555 transitions. Second operand has 18 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 7 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2025-01-10 02:37:03,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0]