./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd-ll.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 494d69f416dd1b0b56dc0371ee72744b83dbc298da37778d271d6f779b4cdcdc --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 10:03:22,202 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 10:03:22,260 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 10:03:22,270 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 10:03:22,271 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 10:03:22,297 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 10:03:22,300 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 10:03:22,301 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 10:03:22,301 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 10:03:22,301 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 10:03:22,301 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 10:03:22,301 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 10:03:22,301 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 10:03:22,301 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 10:03:22,302 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 10:03:22,302 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 10:03:22,302 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 10:03:22,302 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 10:03:22,302 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 10:03:22,302 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 10:03:22,302 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 10:03:22,302 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 10:03:22,302 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 10:03:22,302 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 10:03:22,303 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 10:03:22,303 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 10:03:22,303 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 10:03:22,303 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 10:03:22,303 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 10:03:22,303 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 10:03:22,303 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 10:03:22,303 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 10:03:22,303 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 10:03:22,303 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 10:03:22,304 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 10:03:22,304 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 10:03:22,304 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 10:03:22,304 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 10:03:22,304 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 10:03:22,304 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 10:03:22,304 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 10:03:22,304 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 10:03:22,304 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 10:03:22,304 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 10:03:22,304 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 10:03:22,304 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 494d69f416dd1b0b56dc0371ee72744b83dbc298da37778d271d6f779b4cdcdc [2025-02-08 10:03:22,566 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 10:03:22,572 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 10:03:22,573 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 10:03:22,574 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 10:03:22,574 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 10:03:22,575 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd-ll.c [2025-02-08 10:03:23,838 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/98de09a99/39864c7955bb46e7aad74ad9871dc79b/FLAG417b325a7 [2025-02-08 10:03:24,088 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 10:03:24,088 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd-ll.c [2025-02-08 10:03:24,106 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/98de09a99/39864c7955bb46e7aad74ad9871dc79b/FLAG417b325a7 [2025-02-08 10:03:24,160 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/98de09a99/39864c7955bb46e7aad74ad9871dc79b [2025-02-08 10:03:24,166 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 10:03:24,168 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 10:03:24,169 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 10:03:24,169 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 10:03:24,174 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 10:03:24,174 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 10:03:24" (1/1) ... [2025-02-08 10:03:24,175 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ed4488f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:03:24, skipping insertion in model container [2025-02-08 10:03:24,175 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 10:03:24" (1/1) ... [2025-02-08 10:03:24,186 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 10:03:24,302 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 10:03:24,312 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 10:03:24,335 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 10:03:24,346 INFO L204 MainTranslator]: Completed translation [2025-02-08 10:03:24,347 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:03:24 WrapperNode [2025-02-08 10:03:24,347 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 10:03:24,348 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 10:03:24,348 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 10:03:24,348 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 10:03:24,352 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:03:24" (1/1) ... [2025-02-08 10:03:24,358 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:03:24" (1/1) ... [2025-02-08 10:03:24,375 INFO L138 Inliner]: procedures = 16, calls = 107, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 144 [2025-02-08 10:03:24,377 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 10:03:24,377 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 10:03:24,378 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 10:03:24,378 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 10:03:24,386 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:03:24" (1/1) ... [2025-02-08 10:03:24,386 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:03:24" (1/1) ... [2025-02-08 10:03:24,392 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:03:24" (1/1) ... [2025-02-08 10:03:24,407 INFO L175 MemorySlicer]: Split 66 memory accesses to 9 slices as follows [2, 7, 8, 8, 8, 8, 10, 8, 7]. 15 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0, 0, 0]. The 14 writes are split as follows [0, 1, 2, 2, 2, 2, 2, 2, 1]. [2025-02-08 10:03:24,411 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:03:24" (1/1) ... [2025-02-08 10:03:24,411 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:03:24" (1/1) ... [2025-02-08 10:03:24,415 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:03:24" (1/1) ... [2025-02-08 10:03:24,419 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:03:24" (1/1) ... [2025-02-08 10:03:24,420 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:03:24" (1/1) ... [2025-02-08 10:03:24,420 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:03:24" (1/1) ... [2025-02-08 10:03:24,426 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 10:03:24,427 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 10:03:24,427 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 10:03:24,427 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 10:03:24,427 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:03:24" (1/1) ... [2025-02-08 10:03:24,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 10:03:24,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:03:24,467 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 10:03:24,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 10:03:24,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 10:03:24,486 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_33_to_48_0 [2025-02-08 10:03:24,487 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_33_to_48_0 [2025-02-08 10:03:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-08 10:03:24,487 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-08 10:03:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 10:03:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 10:03:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-08 10:03:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-08 10:03:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-02-08 10:03:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-02-08 10:03:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-02-08 10:03:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-02-08 10:03:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-02-08 10:03:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-08 10:03:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 10:03:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 10:03:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-08 10:03:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-02-08 10:03:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-02-08 10:03:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-02-08 10:03:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-02-08 10:03:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2025-02-08 10:03:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2025-02-08 10:03:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 10:03:24,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 10:03:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 10:03:24,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 10:03:24,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-08 10:03:24,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-02-08 10:03:24,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-02-08 10:03:24,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-02-08 10:03:24,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-02-08 10:03:24,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2025-02-08 10:03:24,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2025-02-08 10:03:24,488 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-08 10:03:24,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-08 10:03:24,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 10:03:24,576 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 10:03:24,578 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 10:03:25,010 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L84: call ULTIMATE.dealloc(main_~#a~0#1.base, main_~#a~0#1.offset);havoc main_~#a~0#1.base, main_~#a~0#1.offset;call ULTIMATE.dealloc(main_~#b~0#1.base, main_~#b~0#1.offset);havoc main_~#b~0#1.base, main_~#b~0#1.offset;call ULTIMATE.dealloc(main_~#p~0#1.base, main_~#p~0#1.offset);havoc main_~#p~0#1.base, main_~#p~0#1.offset;call ULTIMATE.dealloc(main_~#q~0#1.base, main_~#q~0#1.offset);havoc main_~#q~0#1.base, main_~#q~0#1.offset;call ULTIMATE.dealloc(main_~#r~0#1.base, main_~#r~0#1.offset);havoc main_~#r~0#1.base, main_~#r~0#1.offset;call ULTIMATE.dealloc(main_~#s~0#1.base, main_~#s~0#1.offset);havoc main_~#s~0#1.base, main_~#s~0#1.offset;call ULTIMATE.dealloc(main_~#x~0#1.base, main_~#x~0#1.offset);havoc main_~#x~0#1.base, main_~#x~0#1.offset;call ULTIMATE.dealloc(main_~#y~0#1.base, main_~#y~0#1.offset);havoc main_~#y~0#1.base, main_~#y~0#1.offset; [2025-02-08 10:03:25,034 INFO L? ?]: Removed 164 outVars from TransFormulas that were not future-live. [2025-02-08 10:03:25,034 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 10:03:25,042 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 10:03:25,043 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 10:03:25,043 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 10:03:25 BoogieIcfgContainer [2025-02-08 10:03:25,043 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 10:03:25,045 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 10:03:25,045 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 10:03:25,048 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 10:03:25,049 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 10:03:24" (1/3) ... [2025-02-08 10:03:25,049 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53a54adc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 10:03:25, skipping insertion in model container [2025-02-08 10:03:25,049 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:03:24" (2/3) ... [2025-02-08 10:03:25,049 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53a54adc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 10:03:25, skipping insertion in model container [2025-02-08 10:03:25,049 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 10:03:25" (3/3) ... [2025-02-08 10:03:25,050 INFO L128 eAbstractionObserver]: Analyzing ICFG recursified_egcd-ll.c [2025-02-08 10:03:25,060 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 10:03:25,061 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG recursified_egcd-ll.c that has 4 procedures, 151 locations, 1 initial locations, 0 loop locations, and 56 error locations. [2025-02-08 10:03:25,094 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 10:03:25,101 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;@4d8e82b6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 10:03:25,102 INFO L334 AbstractCegarLoop]: Starting to check reachability of 56 error locations. [2025-02-08 10:03:25,105 INFO L276 IsEmpty]: Start isEmpty. Operand has 151 states, 80 states have (on average 1.7625) internal successors, (141), 137 states have internal predecessors, (141), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2025-02-08 10:03:25,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-02-08 10:03:25,109 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:03:25,110 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:03:25,110 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_33_to_48_0Err29ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-02-08 10:03:25,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:03:25,114 INFO L85 PathProgramCache]: Analyzing trace with hash 2054790143, now seen corresponding path program 1 times [2025-02-08 10:03:25,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:03:25,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368530636] [2025-02-08 10:03:25,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:03:25,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:03:25,199 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-08 10:03:25,245 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 10:03:25,245 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:03:25,245 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:03:25,290 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 10:03:25,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:03:25,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368530636] [2025-02-08 10:03:25,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368530636] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:03:25,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248804579] [2025-02-08 10:03:25,291 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:03:25,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:03:25,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:03:25,293 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:03:25,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-08 10:03:25,389 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-08 10:03:25,442 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 10:03:25,443 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:03:25,443 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:03:25,446 INFO L256 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-08 10:03:25,449 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:03:25,457 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 10:03:25,461 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:03:25,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248804579] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:03:25,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 10:03:25,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-02-08 10:03:25,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686211497] [2025-02-08 10:03:25,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:03:25,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-08 10:03:25,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:03:25,484 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-08 10:03:25,485 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-08 10:03:25,488 INFO L87 Difference]: Start difference. First operand has 151 states, 80 states have (on average 1.7625) internal successors, (141), 137 states have internal predecessors, (141), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:03:25,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:03:25,521 INFO L93 Difference]: Finished difference Result 300 states and 334 transitions. [2025-02-08 10:03:25,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-08 10:03:25,523 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2025-02-08 10:03:25,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:03:25,528 INFO L225 Difference]: With dead ends: 300 [2025-02-08 10:03:25,529 INFO L226 Difference]: Without dead ends: 146 [2025-02-08 10:03:25,533 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-08 10:03:25,538 INFO L435 NwaCegarLoop]: 160 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, 160 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 10:03:25,540 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 10:03:25,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2025-02-08 10:03:25,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2025-02-08 10:03:25,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 77 states have (on average 1.7402597402597402) internal successors, (134), 133 states have internal predecessors, (134), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2025-02-08 10:03:25,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 154 transitions. [2025-02-08 10:03:25,590 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 154 transitions. Word has length 17 [2025-02-08 10:03:25,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:03:25,591 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 154 transitions. [2025-02-08 10:03:25,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:03:25,591 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 154 transitions. [2025-02-08 10:03:25,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-02-08 10:03:25,592 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:03:25,592 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:03:25,603 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 10:03:25,797 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 [2025-02-08 10:03:25,798 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_33_to_48_0Err29ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-02-08 10:03:25,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:03:25,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1002925443, now seen corresponding path program 1 times [2025-02-08 10:03:25,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:03:25,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529004586] [2025-02-08 10:03:25,799 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:03:25,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:03:25,837 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-08 10:03:25,876 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 10:03:25,877 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:03:25,877 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:03:25,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1183728929] [2025-02-08 10:03:25,880 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:03:25,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:03:25,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:03:25,887 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:03:25,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-08 10:03:25,949 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-08 10:03:25,981 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 10:03:25,981 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:03:25,981 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:03:25,982 INFO L256 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-02-08 10:03:25,984 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:03:26,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-08 10:03:26,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-08 10:03:26,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-02-08 10:03:26,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-02-08 10:03:26,073 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 10:03:26,073 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:03:26,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:03:26,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529004586] [2025-02-08 10:03:26,074 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:03:26,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183728929] [2025-02-08 10:03:26,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183728929] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:03:26,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:03:26,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 10:03:26,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322202713] [2025-02-08 10:03:26,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:03:26,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 10:03:26,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:03:26,075 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 10:03:26,075 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 10:03:26,075 INFO L87 Difference]: Start difference. First operand 146 states and 154 transitions. Second operand has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 10:03:26,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:03:26,222 INFO L93 Difference]: Finished difference Result 243 states and 258 transitions. [2025-02-08 10:03:26,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 10:03:26,222 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2025-02-08 10:03:26,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:03:26,224 INFO L225 Difference]: With dead ends: 243 [2025-02-08 10:03:26,224 INFO L226 Difference]: Without dead ends: 242 [2025-02-08 10:03:26,224 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-02-08 10:03:26,225 INFO L435 NwaCegarLoop]: 135 mSDtfsCounter, 159 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 10:03:26,225 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 654 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 10:03:26,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2025-02-08 10:03:26,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 175. [2025-02-08 10:03:26,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 102 states have (on average 1.7352941176470589) internal successors, (177), 158 states have internal predecessors, (177), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2025-02-08 10:03:26,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 204 transitions. [2025-02-08 10:03:26,235 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 204 transitions. Word has length 17 [2025-02-08 10:03:26,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:03:26,235 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 204 transitions. [2025-02-08 10:03:26,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 10:03:26,235 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 204 transitions. [2025-02-08 10:03:26,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-02-08 10:03:26,235 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:03:26,235 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:03:26,242 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-08 10:03:26,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:03:26,436 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_33_to_48_0Err28ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-02-08 10:03:26,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:03:26,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1025917622, now seen corresponding path program 1 times [2025-02-08 10:03:26,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:03:26,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652373322] [2025-02-08 10:03:26,437 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:03:26,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:03:26,448 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-08 10:03:26,466 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 10:03:26,466 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:03:26,466 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:03:26,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [361995471] [2025-02-08 10:03:26,468 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:03:26,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:03:26,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:03:26,470 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:03:26,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-08 10:03:26,527 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-08 10:03:26,554 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 10:03:26,554 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:03:26,554 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:03:26,560 INFO L256 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-02-08 10:03:26,562 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:03:26,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-08 10:03:26,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-08 10:03:26,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-02-08 10:03:26,618 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 10:03:26,618 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:03:26,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:03:26,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652373322] [2025-02-08 10:03:26,619 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:03:26,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361995471] [2025-02-08 10:03:26,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361995471] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:03:26,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:03:26,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 10:03:26,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970358292] [2025-02-08 10:03:26,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:03:26,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 10:03:26,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:03:26,620 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 10:03:26,620 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 10:03:26,620 INFO L87 Difference]: Start difference. First operand 175 states and 204 transitions. Second operand has 6 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 10:03:26,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:03:26,777 INFO L93 Difference]: Finished difference Result 242 states and 257 transitions. [2025-02-08 10:03:26,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 10:03:26,778 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2025-02-08 10:03:26,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:03:26,779 INFO L225 Difference]: With dead ends: 242 [2025-02-08 10:03:26,779 INFO L226 Difference]: Without dead ends: 241 [2025-02-08 10:03:26,779 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-02-08 10:03:26,779 INFO L435 NwaCegarLoop]: 136 mSDtfsCounter, 156 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 10:03:26,780 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 656 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 10:03:26,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2025-02-08 10:03:26,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 175. [2025-02-08 10:03:26,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 102 states have (on average 1.7254901960784315) internal successors, (176), 158 states have internal predecessors, (176), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2025-02-08 10:03:26,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 203 transitions. [2025-02-08 10:03:26,788 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 203 transitions. Word has length 18 [2025-02-08 10:03:26,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:03:26,788 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 203 transitions. [2025-02-08 10:03:26,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 10:03:26,788 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 203 transitions. [2025-02-08 10:03:26,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-02-08 10:03:26,788 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:03:26,788 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:03:26,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-08 10:03:26,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:03:26,993 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_33_to_48_0Err27ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-02-08 10:03:26,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:03:26,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1738675173, now seen corresponding path program 1 times [2025-02-08 10:03:26,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:03:26,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608137674] [2025-02-08 10:03:26,994 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:03:26,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:03:27,008 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-08 10:03:27,027 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 10:03:27,027 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:03:27,027 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:03:27,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [786362965] [2025-02-08 10:03:27,029 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:03:27,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:03:27,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:03:27,031 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:03:27,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-08 10:03:27,086 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-08 10:03:27,115 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 10:03:27,115 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:03:27,115 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:03:27,116 INFO L256 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-08 10:03:27,118 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:03:27,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-08 10:03:27,144 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 10:03:27,144 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:03:27,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:03:27,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608137674] [2025-02-08 10:03:27,145 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:03:27,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786362965] [2025-02-08 10:03:27,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786362965] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:03:27,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:03:27,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 10:03:27,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788177732] [2025-02-08 10:03:27,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:03:27,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 10:03:27,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:03:27,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 10:03:27,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 10:03:27,146 INFO L87 Difference]: Start difference. First operand 175 states and 203 transitions. Second operand has 6 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 10:03:27,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:03:27,269 INFO L93 Difference]: Finished difference Result 275 states and 312 transitions. [2025-02-08 10:03:27,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 10:03:27,270 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2025-02-08 10:03:27,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:03:27,272 INFO L225 Difference]: With dead ends: 275 [2025-02-08 10:03:27,272 INFO L226 Difference]: Without dead ends: 273 [2025-02-08 10:03:27,273 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-02-08 10:03:27,273 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 158 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 10:03:27,273 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 669 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 10:03:27,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2025-02-08 10:03:27,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 214. [2025-02-08 10:03:27,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 135 states have (on average 1.711111111111111) internal successors, (231), 192 states have internal predecessors, (231), 17 states have call successors, (17), 5 states have call predecessors, (17), 6 states have return successors, (21), 17 states have call predecessors, (21), 17 states have call successors, (21) [2025-02-08 10:03:27,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 269 transitions. [2025-02-08 10:03:27,284 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 269 transitions. Word has length 19 [2025-02-08 10:03:27,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:03:27,284 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 269 transitions. [2025-02-08 10:03:27,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 10:03:27,284 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 269 transitions. [2025-02-08 10:03:27,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-02-08 10:03:27,285 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:03:27,285 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:03:27,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-08 10:03:27,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:03:27,489 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_33_to_48_0Err25ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-02-08 10:03:27,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:03:27,490 INFO L85 PathProgramCache]: Analyzing trace with hash -124561991, now seen corresponding path program 1 times [2025-02-08 10:03:27,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:03:27,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256545825] [2025-02-08 10:03:27,490 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:03:27,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:03:27,499 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-08 10:03:27,513 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-08 10:03:27,514 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:03:27,514 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:03:27,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [218618730] [2025-02-08 10:03:27,515 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:03:27,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:03:27,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:03:27,517 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:03:27,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-08 10:03:27,575 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-08 10:03:27,599 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-08 10:03:27,599 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:03:27,599 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:03:27,601 INFO L256 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 49 conjuncts are in the unsatisfiable core [2025-02-08 10:03:27,603 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:03:27,608 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-08 10:03:27,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-08 10:03:27,615 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 [2025-02-08 10:03:27,748 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 10:03:27,748 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:03:27,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:03:27,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256545825] [2025-02-08 10:03:27,748 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:03:27,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218618730] [2025-02-08 10:03:27,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218618730] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:03:27,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:03:27,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 10:03:27,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59357532] [2025-02-08 10:03:27,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:03:27,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 10:03:27,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:03:27,753 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 10:03:27,753 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-08 10:03:27,753 INFO L87 Difference]: Start difference. First operand 214 states and 269 transitions. Second operand has 7 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 10:03:28,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:03:28,101 INFO L93 Difference]: Finished difference Result 274 states and 318 transitions. [2025-02-08 10:03:28,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 10:03:28,102 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2025-02-08 10:03:28,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:03:28,103 INFO L225 Difference]: With dead ends: 274 [2025-02-08 10:03:28,103 INFO L226 Difference]: Without dead ends: 272 [2025-02-08 10:03:28,103 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2025-02-08 10:03:28,104 INFO L435 NwaCegarLoop]: 135 mSDtfsCounter, 140 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 10:03:28,104 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 759 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 10:03:28,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2025-02-08 10:03:28,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 214. [2025-02-08 10:03:28,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 135 states have (on average 1.6962962962962962) internal successors, (229), 192 states have internal predecessors, (229), 17 states have call successors, (17), 5 states have call predecessors, (17), 6 states have return successors, (21), 17 states have call predecessors, (21), 17 states have call successors, (21) [2025-02-08 10:03:28,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 267 transitions. [2025-02-08 10:03:28,113 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 267 transitions. Word has length 21 [2025-02-08 10:03:28,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:03:28,113 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 267 transitions. [2025-02-08 10:03:28,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 10:03:28,113 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 267 transitions. [2025-02-08 10:03:28,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-02-08 10:03:28,114 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:03:28,114 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] [2025-02-08 10:03:28,125 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-08 10:03:28,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:03:28,318 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_33_to_48_0Err23ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-02-08 10:03:28,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:03:28,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1232505475, now seen corresponding path program 1 times [2025-02-08 10:03:28,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:03:28,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686325168] [2025-02-08 10:03:28,318 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:03:28,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:03:28,328 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-08 10:03:28,349 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 10:03:28,349 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:03:28,349 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:03:28,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [570969750] [2025-02-08 10:03:28,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:03:28,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:03:28,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:03:28,358 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:03:28,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-08 10:03:28,416 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-08 10:03:28,444 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 10:03:28,444 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:03:28,444 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:03:28,446 INFO L256 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-02-08 10:03:28,448 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:03:28,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-08 10:03:28,477 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 11 treesize of output 7 [2025-02-08 10:03:28,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-02-08 10:03:28,599 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 10:03:28,599 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:03:28,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:03:28,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686325168] [2025-02-08 10:03:28,599 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:03:28,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570969750] [2025-02-08 10:03:28,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570969750] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:03:28,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:03:28,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-08 10:03:28,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572722394] [2025-02-08 10:03:28,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:03:28,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-08 10:03:28,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:03:28,601 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-08 10:03:28,601 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-02-08 10:03:28,601 INFO L87 Difference]: Start difference. First operand 214 states and 267 transitions. Second operand has 11 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 10:03:28,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:03:28,891 INFO L93 Difference]: Finished difference Result 338 states and 373 transitions. [2025-02-08 10:03:28,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-08 10:03:28,892 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 29 [2025-02-08 10:03:28,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:03:28,893 INFO L225 Difference]: With dead ends: 338 [2025-02-08 10:03:28,893 INFO L226 Difference]: Without dead ends: 337 [2025-02-08 10:03:28,894 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2025-02-08 10:03:28,894 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 366 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 10:03:28,894 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 1032 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 10:03:28,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2025-02-08 10:03:28,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 242. [2025-02-08 10:03:28,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 159 states have (on average 1.6918238993710693) internal successors, (269), 216 states have internal predecessors, (269), 20 states have call successors, (20), 6 states have call predecessors, (20), 7 states have return successors, (24), 20 states have call predecessors, (24), 20 states have call successors, (24) [2025-02-08 10:03:28,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 313 transitions. [2025-02-08 10:03:28,905 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 313 transitions. Word has length 29 [2025-02-08 10:03:28,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:03:28,905 INFO L471 AbstractCegarLoop]: Abstraction has 242 states and 313 transitions. [2025-02-08 10:03:28,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 10:03:28,905 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 313 transitions. [2025-02-08 10:03:28,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-02-08 10:03:28,905 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:03:28,905 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] [2025-02-08 10:03:28,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-08 10:03:29,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-02-08 10:03:29,110 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_33_to_48_0Err22ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-02-08 10:03:29,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:03:29,111 INFO L85 PathProgramCache]: Analyzing trace with hash -447035914, now seen corresponding path program 1 times [2025-02-08 10:03:29,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:03:29,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918439316] [2025-02-08 10:03:29,111 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:03:29,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:03:29,139 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-02-08 10:03:29,167 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-02-08 10:03:29,169 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:03:29,169 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:03:29,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1685145233] [2025-02-08 10:03:29,175 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:03:29,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:03:29,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:03:29,178 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:03:29,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-08 10:03:29,238 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-02-08 10:03:29,265 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-02-08 10:03:29,265 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:03:29,265 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:03:29,267 INFO L256 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-08 10:03:29,268 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:03:29,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-08 10:03:29,324 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 10:03:29,325 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:03:29,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:03:29,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918439316] [2025-02-08 10:03:29,325 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:03:29,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685145233] [2025-02-08 10:03:29,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685145233] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:03:29,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:03:29,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 10:03:29,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004605543] [2025-02-08 10:03:29,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:03:29,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 10:03:29,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:03:29,326 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 10:03:29,326 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-02-08 10:03:29,327 INFO L87 Difference]: Start difference. First operand 242 states and 313 transitions. Second operand has 7 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 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) [2025-02-08 10:03:29,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:03:29,489 INFO L93 Difference]: Finished difference Result 337 states and 371 transitions. [2025-02-08 10:03:29,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 10:03:29,490 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 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 30 [2025-02-08 10:03:29,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:03:29,491 INFO L225 Difference]: With dead ends: 337 [2025-02-08 10:03:29,492 INFO L226 Difference]: Without dead ends: 336 [2025-02-08 10:03:29,492 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2025-02-08 10:03:29,492 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 217 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 10:03:29,493 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 825 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 10:03:29,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2025-02-08 10:03:29,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 242. [2025-02-08 10:03:29,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 159 states have (on average 1.679245283018868) internal successors, (267), 216 states have internal predecessors, (267), 20 states have call successors, (20), 6 states have call predecessors, (20), 7 states have return successors, (24), 20 states have call predecessors, (24), 20 states have call successors, (24) [2025-02-08 10:03:29,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 311 transitions. [2025-02-08 10:03:29,505 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 311 transitions. Word has length 30 [2025-02-08 10:03:29,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:03:29,505 INFO L471 AbstractCegarLoop]: Abstraction has 242 states and 311 transitions. [2025-02-08 10:03:29,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 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) [2025-02-08 10:03:29,505 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 311 transitions. [2025-02-08 10:03:29,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-02-08 10:03:29,506 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:03:29,506 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] [2025-02-08 10:03:29,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-02-08 10:03:29,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:03:29,707 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_33_to_48_0Err21ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-02-08 10:03:29,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:03:29,708 INFO L85 PathProgramCache]: Analyzing trace with hash -973211423, now seen corresponding path program 1 times [2025-02-08 10:03:29,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:03:29,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15932780] [2025-02-08 10:03:29,708 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:03:29,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:03:29,719 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-02-08 10:03:29,735 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-08 10:03:29,736 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:03:29,736 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:03:29,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1628250077] [2025-02-08 10:03:29,737 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:03:29,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:03:29,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:03:29,739 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:03:29,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-08 10:03:29,803 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-02-08 10:03:29,834 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-08 10:03:29,834 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:03:29,834 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:03:29,841 INFO L256 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-02-08 10:03:29,843 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:03:29,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-08 10:03:29,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-08 10:03:30,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-02-08 10:03:30,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-02-08 10:03:30,022 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:03:30,022 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:03:30,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:03:30,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15932780] [2025-02-08 10:03:30,114 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:03:30,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628250077] [2025-02-08 10:03:30,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628250077] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:03:30,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-02-08 10:03:30,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2025-02-08 10:03:30,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711927543] [2025-02-08 10:03:30,115 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-02-08 10:03:30,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 10:03:30,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:03:30,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 10:03:30,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2025-02-08 10:03:30,116 INFO L87 Difference]: Start difference. First operand 242 states and 311 transitions. Second operand has 12 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 10:03:34,131 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-08 10:03:38,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-08 10:03:42,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-08 10:03:46,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-08 10:03:50,489 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-08 10:03:54,498 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-08 10:03:54,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:03:54,587 INFO L93 Difference]: Finished difference Result 340 states and 372 transitions. [2025-02-08 10:03:54,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-08 10:03:54,587 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 31 [2025-02-08 10:03:54,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:03:54,589 INFO L225 Difference]: With dead ends: 340 [2025-02-08 10:03:54,589 INFO L226 Difference]: Without dead ends: 339 [2025-02-08 10:03:54,589 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2025-02-08 10:03:54,589 INFO L435 NwaCegarLoop]: 128 mSDtfsCounter, 425 mSDsluCounter, 1007 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 31 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 1135 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.4s IncrementalHoareTripleChecker+Time [2025-02-08 10:03:54,589 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 1135 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 326 Invalid, 6 Unknown, 0 Unchecked, 24.4s Time] [2025-02-08 10:03:54,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2025-02-08 10:03:54,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 246. [2025-02-08 10:03:54,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 162 states have (on average 1.654320987654321) internal successors, (268), 219 states have internal predecessors, (268), 20 states have call successors, (20), 7 states have call predecessors, (20), 8 states have return successors, (24), 20 states have call predecessors, (24), 20 states have call successors, (24) [2025-02-08 10:03:54,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 312 transitions. [2025-02-08 10:03:54,603 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 312 transitions. Word has length 31 [2025-02-08 10:03:54,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:03:54,603 INFO L471 AbstractCegarLoop]: Abstraction has 246 states and 312 transitions. [2025-02-08 10:03:54,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 10:03:54,603 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 312 transitions. [2025-02-08 10:03:54,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-02-08 10:03:54,604 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:03:54,604 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:03:54,612 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-08 10:03:54,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:03:54,804 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_33_to_48_0Err20ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-02-08 10:03:54,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:03:54,805 INFO L85 PathProgramCache]: Analyzing trace with hash -104783020, now seen corresponding path program 1 times [2025-02-08 10:03:54,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:03:54,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266839251] [2025-02-08 10:03:54,805 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:03:54,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:03:54,820 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-02-08 10:03:54,846 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-02-08 10:03:54,847 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:03:54,847 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:03:54,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [441493370] [2025-02-08 10:03:54,850 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:03:54,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:03:54,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:03:54,855 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:03:54,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-08 10:03:54,923 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-02-08 10:03:54,958 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-02-08 10:03:54,958 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:03:54,958 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:03:54,964 INFO L256 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-02-08 10:03:54,967 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:03:54,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-08 10:03:55,128 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-08 10:03:55,376 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 10:03:55,377 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 [2025-02-08 10:03:55,403 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:03:55,403 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:03:55,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:03:55,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266839251] [2025-02-08 10:03:55,583 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:03:55,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441493370] [2025-02-08 10:03:55,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441493370] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:03:55,583 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-02-08 10:03:55,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2025-02-08 10:03:55,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588801858] [2025-02-08 10:03:55,584 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-02-08 10:03:55,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-08 10:03:55,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:03:55,584 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-08 10:03:55,585 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2025-02-08 10:03:55,585 INFO L87 Difference]: Start difference. First operand 246 states and 312 transitions. Second operand has 13 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 10:03:59,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-08 10:04:00,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:04:00,186 INFO L93 Difference]: Finished difference Result 339 states and 370 transitions. [2025-02-08 10:04:00,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-02-08 10:04:00,187 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 32 [2025-02-08 10:04:00,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:04:00,188 INFO L225 Difference]: With dead ends: 339 [2025-02-08 10:04:00,188 INFO L226 Difference]: Without dead ends: 338 [2025-02-08 10:04:00,189 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2025-02-08 10:04:00,189 INFO L435 NwaCegarLoop]: 129 mSDtfsCounter, 588 mSDsluCounter, 961 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 51 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2025-02-08 10:04:00,189 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [594 Valid, 1090 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 323 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2025-02-08 10:04:00,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2025-02-08 10:04:00,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 246. [2025-02-08 10:04:00,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 162 states have (on average 1.6419753086419753) internal successors, (266), 219 states have internal predecessors, (266), 20 states have call successors, (20), 7 states have call predecessors, (20), 8 states have return successors, (24), 20 states have call predecessors, (24), 20 states have call successors, (24) [2025-02-08 10:04:00,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 310 transitions. [2025-02-08 10:04:00,204 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 310 transitions. Word has length 32 [2025-02-08 10:04:00,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:04:00,204 INFO L471 AbstractCegarLoop]: Abstraction has 246 states and 310 transitions. [2025-02-08 10:04:00,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 10:04:00,205 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 310 transitions. [2025-02-08 10:04:00,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-02-08 10:04:00,205 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:04:00,205 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] [2025-02-08 10:04:00,215 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 [2025-02-08 10:04:00,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:04:00,410 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_33_to_48_0Err19ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-02-08 10:04:00,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:04:00,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1046693695, now seen corresponding path program 1 times [2025-02-08 10:04:00,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:04:00,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194879243] [2025-02-08 10:04:00,412 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:04:00,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:04:00,428 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-08 10:04:00,452 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-08 10:04:00,452 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:04:00,452 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:04:00,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [719096180] [2025-02-08 10:04:00,453 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:04:00,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:04:00,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:04:00,465 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:04:00,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-08 10:04:00,534 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-08 10:04:00,563 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-08 10:04:00,563 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:04:00,563 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:04:00,569 INFO L256 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-02-08 10:04:00,572 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:04:00,577 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 1 [2025-02-08 10:04:00,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-08 10:04:00,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-08 10:04:00,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2025-02-08 10:04:00,793 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 10:04:00,793 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:04:00,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:04:00,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194879243] [2025-02-08 10:04:00,793 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:04:00,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719096180] [2025-02-08 10:04:00,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719096180] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:04:00,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:04:00,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-08 10:04:00,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422210067] [2025-02-08 10:04:00,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:04:00,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-08 10:04:00,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:04:00,794 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-08 10:04:00,795 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-02-08 10:04:00,795 INFO L87 Difference]: Start difference. First operand 246 states and 310 transitions. Second operand has 10 states, 8 states have (on average 2.875) internal successors, (23), 8 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) [2025-02-08 10:04:01,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:04:01,261 INFO L93 Difference]: Finished difference Result 334 states and 364 transitions. [2025-02-08 10:04:01,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-08 10:04:01,261 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.875) internal successors, (23), 8 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 [2025-02-08 10:04:01,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:04:01,264 INFO L225 Difference]: With dead ends: 334 [2025-02-08 10:04:01,266 INFO L226 Difference]: Without dead ends: 333 [2025-02-08 10:04:01,266 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2025-02-08 10:04:01,266 INFO L435 NwaCegarLoop]: 123 mSDtfsCounter, 355 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 10:04:01,266 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 844 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 10:04:01,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2025-02-08 10:04:01,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 246. [2025-02-08 10:04:01,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 162 states have (on average 1.6296296296296295) internal successors, (264), 219 states have internal predecessors, (264), 20 states have call successors, (20), 7 states have call predecessors, (20), 8 states have return successors, (24), 20 states have call predecessors, (24), 20 states have call successors, (24) [2025-02-08 10:04:01,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 308 transitions. [2025-02-08 10:04:01,283 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 308 transitions. Word has length 33 [2025-02-08 10:04:01,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:04:01,283 INFO L471 AbstractCegarLoop]: Abstraction has 246 states and 308 transitions. [2025-02-08 10:04:01,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.875) internal successors, (23), 8 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) [2025-02-08 10:04:01,283 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 308 transitions. [2025-02-08 10:04:01,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-02-08 10:04:01,285 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:04:01,285 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:04:01,292 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-08 10:04:01,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-02-08 10:04:01,490 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_33_to_48_0Err18ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-02-08 10:04:01,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:04:01,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1912233806, now seen corresponding path program 1 times [2025-02-08 10:04:01,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:04:01,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500463292] [2025-02-08 10:04:01,492 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:04:01,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:04:01,503 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-02-08 10:04:01,533 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-02-08 10:04:01,533 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:04:01,533 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:04:01,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [420494703] [2025-02-08 10:04:01,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:04:01,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:04:01,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:04:01,539 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:04:01,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-08 10:04:01,611 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-02-08 10:04:01,639 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-02-08 10:04:01,640 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:04:01,640 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:04:01,641 INFO L256 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-02-08 10:04:01,643 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:04:01,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-08 10:04:01,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-08 10:04:01,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-08 10:04:01,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-02-08 10:04:01,855 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 10:04:01,855 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:04:01,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:04:01,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500463292] [2025-02-08 10:04:01,855 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:04:01,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420494703] [2025-02-08 10:04:01,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420494703] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:04:01,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:04:01,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-08 10:04:01,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968642465] [2025-02-08 10:04:01,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:04:01,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-08 10:04:01,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:04:01,856 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-08 10:04:01,857 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-02-08 10:04:01,857 INFO L87 Difference]: Start difference. First operand 246 states and 308 transitions. Second operand has 10 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-08 10:04:02,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:04:02,253 INFO L93 Difference]: Finished difference Result 333 states and 362 transitions. [2025-02-08 10:04:02,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-08 10:04:02,253 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 34 [2025-02-08 10:04:02,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:04:02,255 INFO L225 Difference]: With dead ends: 333 [2025-02-08 10:04:02,255 INFO L226 Difference]: Without dead ends: 332 [2025-02-08 10:04:02,255 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2025-02-08 10:04:02,256 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 413 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 10:04:02,256 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 814 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 10:04:02,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2025-02-08 10:04:02,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 246. [2025-02-08 10:04:02,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 162 states have (on average 1.617283950617284) internal successors, (262), 219 states have internal predecessors, (262), 20 states have call successors, (20), 7 states have call predecessors, (20), 8 states have return successors, (24), 20 states have call predecessors, (24), 20 states have call successors, (24) [2025-02-08 10:04:02,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 306 transitions. [2025-02-08 10:04:02,273 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 306 transitions. Word has length 34 [2025-02-08 10:04:02,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:04:02,274 INFO L471 AbstractCegarLoop]: Abstraction has 246 states and 306 transitions. [2025-02-08 10:04:02,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-08 10:04:02,274 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 306 transitions. [2025-02-08 10:04:02,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2025-02-08 10:04:02,276 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:04:02,276 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] [2025-02-08 10:04:02,285 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-08 10:04:02,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-02-08 10:04:02,477 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_33_to_48_0Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-02-08 10:04:02,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:04:02,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1081778707, now seen corresponding path program 1 times [2025-02-08 10:04:02,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:04:02,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121341966] [2025-02-08 10:04:02,478 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:04:02,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:04:02,488 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-02-08 10:04:02,502 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-02-08 10:04:02,503 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:04:02,503 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:04:02,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [796526095] [2025-02-08 10:04:02,504 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:04:02,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:04:02,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:04:02,506 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:04:02,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-08 10:04:02,577 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-02-08 10:04:02,605 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-02-08 10:04:02,605 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:04:02,605 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:04:02,607 INFO L256 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-02-08 10:04:02,609 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:04:02,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-08 10:04:02,709 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-08 10:04:02,709 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:04:02,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:04:02,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121341966] [2025-02-08 10:04:02,709 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:04:02,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796526095] [2025-02-08 10:04:02,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796526095] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:04:02,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:04:02,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 10:04:02,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319577058] [2025-02-08 10:04:02,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:04:02,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 10:04:02,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:04:02,710 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 10:04:02,710 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-02-08 10:04:02,711 INFO L87 Difference]: Start difference. First operand 246 states and 306 transitions. Second operand has 7 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-08 10:04:02,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:04:02,864 INFO L93 Difference]: Finished difference Result 434 states and 510 transitions. [2025-02-08 10:04:02,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 10:04:02,865 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 41 [2025-02-08 10:04:02,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:04:02,866 INFO L225 Difference]: With dead ends: 434 [2025-02-08 10:04:02,866 INFO L226 Difference]: Without dead ends: 432 [2025-02-08 10:04:02,867 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2025-02-08 10:04:02,867 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 267 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 10:04:02,867 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 718 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 10:04:02,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2025-02-08 10:04:02,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 342. [2025-02-08 10:04:02,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 244 states have (on average 1.651639344262295) internal successors, (403), 302 states have internal predecessors, (403), 30 states have call successors, (30), 10 states have call predecessors, (30), 12 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2025-02-08 10:04:02,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 470 transitions. [2025-02-08 10:04:02,884 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 470 transitions. Word has length 41 [2025-02-08 10:04:02,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:04:02,885 INFO L471 AbstractCegarLoop]: Abstraction has 342 states and 470 transitions. [2025-02-08 10:04:02,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-08 10:04:02,885 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 470 transitions. [2025-02-08 10:04:02,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-02-08 10:04:02,885 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:04:02,885 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] [2025-02-08 10:04:02,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-02-08 10:04:03,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:04:03,090 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting func_to_recursive_line_33_to_48_0Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-02-08 10:04:03,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:04:03,091 INFO L85 PathProgramCache]: Analyzing trace with hash 207252145, now seen corresponding path program 1 times [2025-02-08 10:04:03,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:04:03,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566646039] [2025-02-08 10:04:03,091 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:04:03,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:04:03,099 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-02-08 10:04:03,112 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-02-08 10:04:03,112 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:04:03,112 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:04:03,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1062195618] [2025-02-08 10:04:03,113 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:04:03,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:04:03,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:04:03,115 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:04:03,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-08 10:04:03,192 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-02-08 10:04:03,223 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-02-08 10:04:03,223 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:04:03,223 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:04:03,225 INFO L256 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-02-08 10:04:03,227 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:04:03,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-08 10:04:03,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-08 10:04:03,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-02-08 10:04:03,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-02-08 10:04:03,421 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-08 10:04:03,421 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:04:03,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:04:03,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566646039] [2025-02-08 10:04:03,421 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:04:03,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062195618] [2025-02-08 10:04:03,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062195618] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:04:03,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:04:03,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-08 10:04:03,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829854256] [2025-02-08 10:04:03,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:04:03,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-08 10:04:03,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:04:03,422 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-08 10:04:03,422 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-02-08 10:04:03,422 INFO L87 Difference]: Start difference. First operand 342 states and 470 transitions. Second operand has 11 states, 8 states have (on average 3.875) internal successors, (31), 9 states have internal predecessors, (31), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-02-08 10:04:07,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-08 10:04:11,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-08 10:04:15,663 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-08 10:04:19,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-08 10:04:23,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-08 10:04:23,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:04:23,762 INFO L93 Difference]: Finished difference Result 442 states and 518 transitions. [2025-02-08 10:04:23,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-08 10:04:23,763 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 3.875) internal successors, (31), 9 states have internal predecessors, (31), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 43 [2025-02-08 10:04:23,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:04:23,764 INFO L225 Difference]: With dead ends: 442 [2025-02-08 10:04:23,765 INFO L226 Difference]: Without dead ends: 441 [2025-02-08 10:04:23,765 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2025-02-08 10:04:23,765 INFO L435 NwaCegarLoop]: 131 mSDtfsCounter, 357 mSDsluCounter, 935 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 24 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.3s IncrementalHoareTripleChecker+Time [2025-02-08 10:04:23,766 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 1066 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 268 Invalid, 5 Unknown, 0 Unchecked, 20.3s Time] [2025-02-08 10:04:23,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2025-02-08 10:04:23,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 342. [2025-02-08 10:04:23,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 244 states have (on average 1.6434426229508197) internal successors, (401), 302 states have internal predecessors, (401), 30 states have call successors, (30), 10 states have call predecessors, (30), 12 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2025-02-08 10:04:23,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 468 transitions. [2025-02-08 10:04:23,782 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 468 transitions. Word has length 43 [2025-02-08 10:04:23,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:04:23,783 INFO L471 AbstractCegarLoop]: Abstraction has 342 states and 468 transitions. [2025-02-08 10:04:23,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 3.875) internal successors, (31), 9 states have internal predecessors, (31), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-02-08 10:04:23,783 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 468 transitions. [2025-02-08 10:04:23,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2025-02-08 10:04:23,783 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:04:23,783 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:04:23,791 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-02-08 10:04:23,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:04:23,984 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting func_to_recursive_line_33_to_48_0Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-02-08 10:04:23,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:04:23,984 INFO L85 PathProgramCache]: Analyzing trace with hash 2129849206, now seen corresponding path program 1 times [2025-02-08 10:04:23,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:04:23,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550030015] [2025-02-08 10:04:23,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:04:23,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:04:23,993 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-02-08 10:04:24,012 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-02-08 10:04:24,013 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:04:24,013 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:04:24,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [289395248] [2025-02-08 10:04:24,016 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:04:24,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:04:24,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:04:24,018 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:04:24,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-08 10:04:24,093 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-02-08 10:04:24,125 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-02-08 10:04:24,125 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:04:24,125 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:04:24,129 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-02-08 10:04:24,131 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:04:24,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-08 10:04:24,204 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 11 treesize of output 7 [2025-02-08 10:04:24,541 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 10:04:24,542 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 [2025-02-08 10:04:24,559 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-08 10:04:24,559 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:04:24,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:04:24,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550030015] [2025-02-08 10:04:24,559 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:04:24,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289395248] [2025-02-08 10:04:24,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289395248] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:04:24,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:04:24,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-02-08 10:04:24,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209942817] [2025-02-08 10:04:24,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:04:24,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-08 10:04:24,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:04:24,560 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-08 10:04:24,561 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2025-02-08 10:04:24,561 INFO L87 Difference]: Start difference. First operand 342 states and 468 transitions. Second operand has 13 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-02-08 10:04:25,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:04:25,037 INFO L93 Difference]: Finished difference Result 441 states and 516 transitions. [2025-02-08 10:04:25,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-08 10:04:25,038 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 44 [2025-02-08 10:04:25,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:04:25,040 INFO L225 Difference]: With dead ends: 441 [2025-02-08 10:04:25,040 INFO L226 Difference]: Without dead ends: 440 [2025-02-08 10:04:25,040 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 27 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2025-02-08 10:04:25,040 INFO L435 NwaCegarLoop]: 131 mSDtfsCounter, 554 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-08 10:04:25,040 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [561 Valid, 961 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-08 10:04:25,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2025-02-08 10:04:25,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 342. [2025-02-08 10:04:25,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 244 states have (on average 1.6352459016393444) internal successors, (399), 302 states have internal predecessors, (399), 30 states have call successors, (30), 10 states have call predecessors, (30), 12 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2025-02-08 10:04:25,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 466 transitions. [2025-02-08 10:04:25,064 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 466 transitions. Word has length 44 [2025-02-08 10:04:25,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:04:25,065 INFO L471 AbstractCegarLoop]: Abstraction has 342 states and 466 transitions. [2025-02-08 10:04:25,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-02-08 10:04:25,065 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 466 transitions. [2025-02-08 10:04:25,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-02-08 10:04:25,066 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:04:25,066 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:04:25,074 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-02-08 10:04:25,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-02-08 10:04:25,274 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting func_to_recursive_line_33_to_48_0Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-02-08 10:04:25,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:04:25,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1600815951, now seen corresponding path program 1 times [2025-02-08 10:04:25,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:04:25,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642446523] [2025-02-08 10:04:25,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:04:25,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:04:25,284 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-02-08 10:04:25,309 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-02-08 10:04:25,309 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:04:25,309 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:04:25,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [958230969] [2025-02-08 10:04:25,312 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:04:25,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:04:25,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:04:25,315 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:04:25,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-02-08 10:04:25,395 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-02-08 10:04:25,426 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-02-08 10:04:25,426 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:04:25,426 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:04:25,432 INFO L256 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-02-08 10:04:25,434 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:04:25,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-08 10:04:25,534 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-08 10:04:25,534 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:04:25,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:04:25,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642446523] [2025-02-08 10:04:25,534 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:04:25,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958230969] [2025-02-08 10:04:25,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958230969] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:04:25,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:04:25,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-08 10:04:25,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677766642] [2025-02-08 10:04:25,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:04:25,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 10:04:25,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:04:25,535 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 10:04:25,535 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-08 10:04:25,536 INFO L87 Difference]: Start difference. First operand 342 states and 466 transitions. Second operand has 8 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-08 10:04:25,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:04:25,725 INFO L93 Difference]: Finished difference Result 430 states and 502 transitions. [2025-02-08 10:04:25,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 10:04:25,725 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 45 [2025-02-08 10:04:25,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:04:25,727 INFO L225 Difference]: With dead ends: 430 [2025-02-08 10:04:25,727 INFO L226 Difference]: Without dead ends: 429 [2025-02-08 10:04:25,727 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2025-02-08 10:04:25,728 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 254 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 10:04:25,728 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 847 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 10:04:25,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2025-02-08 10:04:25,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 342. [2025-02-08 10:04:25,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 244 states have (on average 1.6270491803278688) internal successors, (397), 302 states have internal predecessors, (397), 30 states have call successors, (30), 10 states have call predecessors, (30), 12 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2025-02-08 10:04:25,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 464 transitions. [2025-02-08 10:04:25,745 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 464 transitions. Word has length 45 [2025-02-08 10:04:25,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:04:25,745 INFO L471 AbstractCegarLoop]: Abstraction has 342 states and 464 transitions. [2025-02-08 10:04:25,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-08 10:04:25,745 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 464 transitions. [2025-02-08 10:04:25,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2025-02-08 10:04:25,746 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:04:25,746 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:04:25,753 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-02-08 10:04:25,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-02-08 10:04:25,947 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting func_to_recursive_line_33_to_48_0Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-02-08 10:04:25,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:04:25,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1914313068, now seen corresponding path program 1 times [2025-02-08 10:04:25,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:04:25,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771876240] [2025-02-08 10:04:25,947 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:04:25,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:04:25,956 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-02-08 10:04:25,979 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-02-08 10:04:25,980 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:04:25,980 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:04:25,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [672423209] [2025-02-08 10:04:25,981 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:04:25,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:04:25,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:04:25,988 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:04:25,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-02-08 10:04:26,071 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-02-08 10:04:26,100 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-02-08 10:04:26,101 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:04:26,101 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:04:26,102 INFO L256 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 86 conjuncts are in the unsatisfiable core [2025-02-08 10:04:26,105 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:04:26,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-08 10:04:26,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-08 10:04:26,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-08 10:04:26,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2025-02-08 10:04:26,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-08 10:04:26,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2025-02-08 10:04:26,397 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 [2025-02-08 10:04:38,631 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 [2025-02-08 10:04:38,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2025-02-08 10:04:38,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-02-08 10:04:38,686 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 4 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 10:04:38,686 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:04:39,186 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-08 10:04:39,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:04:39,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771876240] [2025-02-08 10:04:39,187 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:04:39,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672423209] [2025-02-08 10:04:39,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672423209] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-08 10:04:39,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 10:04:39,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 17 [2025-02-08 10:04:39,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239457458] [2025-02-08 10:04:39,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:04:39,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 10:04:39,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:04:39,188 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 10:04:39,188 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=245, Unknown=2, NotChecked=0, Total=306 [2025-02-08 10:04:39,188 INFO L87 Difference]: Start difference. First operand 342 states and 464 transitions. Second operand has 8 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-08 10:04:41,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:04:41,738 INFO L93 Difference]: Finished difference Result 394 states and 484 transitions. [2025-02-08 10:04:41,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 10:04:41,738 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 46 [2025-02-08 10:04:41,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:04:41,740 INFO L225 Difference]: With dead ends: 394 [2025-02-08 10:04:41,740 INFO L226 Difference]: Without dead ends: 393 [2025-02-08 10:04:41,740 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 69 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=82, Invalid=378, Unknown=2, NotChecked=0, Total=462 [2025-02-08 10:04:41,740 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 233 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2025-02-08 10:04:41,740 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 797 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2025-02-08 10:04:41,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2025-02-08 10:04:41,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 342. [2025-02-08 10:04:41,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 244 states have (on average 1.6188524590163935) internal successors, (395), 302 states have internal predecessors, (395), 30 states have call successors, (30), 10 states have call predecessors, (30), 12 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2025-02-08 10:04:41,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 462 transitions. [2025-02-08 10:04:41,789 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 462 transitions. Word has length 46 [2025-02-08 10:04:41,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:04:41,789 INFO L471 AbstractCegarLoop]: Abstraction has 342 states and 462 transitions. [2025-02-08 10:04:41,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-08 10:04:41,790 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 462 transitions. [2025-02-08 10:04:41,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2025-02-08 10:04:41,791 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:04:41,791 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:04:41,799 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-02-08 10:04:41,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:04:41,994 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting func_to_recursive_line_33_to_48_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-02-08 10:04:41,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:04:41,994 INFO L85 PathProgramCache]: Analyzing trace with hash 874645036, now seen corresponding path program 1 times [2025-02-08 10:04:41,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:04:41,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646972301] [2025-02-08 10:04:41,995 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:04:41,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:04:42,003 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-02-08 10:04:42,009 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-02-08 10:04:42,009 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:04:42,009 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:04:42,586 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-08 10:04:42,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:04:42,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646972301] [2025-02-08 10:04:42,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646972301] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:04:42,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:04:42,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 10:04:42,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313704957] [2025-02-08 10:04:42,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:04:42,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 10:04:42,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:04:42,587 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 10:04:42,587 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 10:04:42,587 INFO L87 Difference]: Start difference. First operand 342 states and 462 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-02-08 10:04:42,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:04:42,622 INFO L93 Difference]: Finished difference Result 342 states and 462 transitions. [2025-02-08 10:04:42,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 10:04:42,623 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 55 [2025-02-08 10:04:42,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:04:42,624 INFO L225 Difference]: With dead ends: 342 [2025-02-08 10:04:42,624 INFO L226 Difference]: Without dead ends: 341 [2025-02-08 10:04:42,624 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 10:04:42,625 INFO L435 NwaCegarLoop]: 148 mSDtfsCounter, 1 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 10:04:42,625 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 434 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 10:04:42,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2025-02-08 10:04:42,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2025-02-08 10:04:42,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 244 states have (on average 1.610655737704918) internal successors, (393), 301 states have internal predecessors, (393), 30 states have call successors, (30), 10 states have call predecessors, (30), 12 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2025-02-08 10:04:42,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 460 transitions. [2025-02-08 10:04:42,645 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 460 transitions. Word has length 55 [2025-02-08 10:04:42,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:04:42,646 INFO L471 AbstractCegarLoop]: Abstraction has 341 states and 460 transitions. [2025-02-08 10:04:42,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-02-08 10:04:42,646 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 460 transitions. [2025-02-08 10:04:42,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2025-02-08 10:04:42,647 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:04:42,648 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:04:42,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-02-08 10:04:42,649 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting func_to_recursive_line_33_to_48_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-02-08 10:04:42,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:04:42,649 INFO L85 PathProgramCache]: Analyzing trace with hash 874644620, now seen corresponding path program 1 times [2025-02-08 10:04:42,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:04:42,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685655767] [2025-02-08 10:04:42,649 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:04:42,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:04:42,661 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-02-08 10:04:42,667 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-02-08 10:04:42,667 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:04:42,668 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:04:43,101 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-08 10:04:43,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:04:43,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685655767] [2025-02-08 10:04:43,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685655767] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:04:43,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:04:43,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 10:04:43,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655412600] [2025-02-08 10:04:43,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:04:43,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 10:04:43,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:04:43,102 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 10:04:43,102 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 10:04:43,102 INFO L87 Difference]: Start difference. First operand 341 states and 460 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-02-08 10:04:43,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:04:43,161 INFO L93 Difference]: Finished difference Result 341 states and 460 transitions. [2025-02-08 10:04:43,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 10:04:43,165 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 55 [2025-02-08 10:04:43,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:04:43,166 INFO L225 Difference]: With dead ends: 341 [2025-02-08 10:04:43,166 INFO L226 Difference]: Without dead ends: 340 [2025-02-08 10:04:43,166 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 10:04:43,167 INFO L435 NwaCegarLoop]: 147 mSDtfsCounter, 1 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 10:04:43,167 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 431 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 10:04:43,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2025-02-08 10:04:43,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2025-02-08 10:04:43,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 244 states have (on average 1.6024590163934427) internal successors, (391), 300 states have internal predecessors, (391), 30 states have call successors, (30), 10 states have call predecessors, (30), 12 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2025-02-08 10:04:43,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 458 transitions. [2025-02-08 10:04:43,212 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 458 transitions. Word has length 55 [2025-02-08 10:04:43,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:04:43,213 INFO L471 AbstractCegarLoop]: Abstraction has 340 states and 458 transitions. [2025-02-08 10:04:43,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-02-08 10:04:43,213 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 458 transitions. [2025-02-08 10:04:43,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-02-08 10:04:43,214 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:04:43,214 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:04:43,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-02-08 10:04:43,214 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting func_to_recursive_line_33_to_48_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-02-08 10:04:43,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:04:43,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1344192332, now seen corresponding path program 1 times [2025-02-08 10:04:43,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:04:43,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367286552] [2025-02-08 10:04:43,215 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:04:43,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:04:43,227 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-02-08 10:04:43,232 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-02-08 10:04:43,232 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:04:43,233 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:04:43,544 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-08 10:04:43,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:04:43,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367286552] [2025-02-08 10:04:43,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367286552] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:04:43,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:04:43,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 10:04:43,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452884656] [2025-02-08 10:04:43,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:04:43,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 10:04:43,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:04:43,546 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 10:04:43,546 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-08 10:04:43,546 INFO L87 Difference]: Start difference. First operand 340 states and 458 transitions. Second operand has 7 states, 5 states have (on average 7.2) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-08 10:04:43,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:04:43,690 INFO L93 Difference]: Finished difference Result 346 states and 464 transitions. [2025-02-08 10:04:43,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 10:04:43,691 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 7.2) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 56 [2025-02-08 10:04:43,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:04:43,692 INFO L225 Difference]: With dead ends: 346 [2025-02-08 10:04:43,692 INFO L226 Difference]: Without dead ends: 345 [2025-02-08 10:04:43,692 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2025-02-08 10:04:43,693 INFO L435 NwaCegarLoop]: 135 mSDtfsCounter, 79 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 10:04:43,693 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 737 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 10:04:43,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2025-02-08 10:04:43,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 342. [2025-02-08 10:04:43,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 246 states have (on average 1.5975609756097562) internal successors, (393), 302 states have internal predecessors, (393), 30 states have call successors, (30), 10 states have call predecessors, (30), 12 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2025-02-08 10:04:43,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 460 transitions. [2025-02-08 10:04:43,710 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 460 transitions. Word has length 56 [2025-02-08 10:04:43,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:04:43,711 INFO L471 AbstractCegarLoop]: Abstraction has 342 states and 460 transitions. [2025-02-08 10:04:43,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 7.2) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-08 10:04:43,711 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 460 transitions. [2025-02-08 10:04:43,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-02-08 10:04:43,711 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:04:43,712 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:04:43,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-02-08 10:04:43,712 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting func_to_recursive_line_33_to_48_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-02-08 10:04:43,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:04:43,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1344179423, now seen corresponding path program 1 times [2025-02-08 10:04:43,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:04:43,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124759627] [2025-02-08 10:04:43,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:04:43,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:04:43,720 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-02-08 10:04:43,725 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-02-08 10:04:43,725 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:04:43,726 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:04:44,049 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-08 10:04:44,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:04:44,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124759627] [2025-02-08 10:04:44,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124759627] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:04:44,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:04:44,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 10:04:44,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814337766] [2025-02-08 10:04:44,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:04:44,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 10:04:44,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:04:44,050 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 10:04:44,050 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-08 10:04:44,051 INFO L87 Difference]: Start difference. First operand 342 states and 460 transitions. Second operand has 7 states, 5 states have (on average 7.2) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-08 10:04:44,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:04:44,219 INFO L93 Difference]: Finished difference Result 345 states and 463 transitions. [2025-02-08 10:04:44,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 10:04:44,219 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 7.2) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 56 [2025-02-08 10:04:44,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:04:44,220 INFO L225 Difference]: With dead ends: 345 [2025-02-08 10:04:44,220 INFO L226 Difference]: Without dead ends: 344 [2025-02-08 10:04:44,221 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2025-02-08 10:04:44,222 INFO L435 NwaCegarLoop]: 135 mSDtfsCounter, 77 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 10:04:44,222 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 737 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 10:04:44,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2025-02-08 10:04:44,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2025-02-08 10:04:44,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 248 states have (on average 1.592741935483871) internal successors, (395), 304 states have internal predecessors, (395), 30 states have call successors, (30), 10 states have call predecessors, (30), 12 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2025-02-08 10:04:44,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 462 transitions. [2025-02-08 10:04:44,245 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 462 transitions. Word has length 56 [2025-02-08 10:04:44,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:04:44,245 INFO L471 AbstractCegarLoop]: Abstraction has 344 states and 462 transitions. [2025-02-08 10:04:44,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 7.2) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-08 10:04:44,245 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 462 transitions. [2025-02-08 10:04:44,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2025-02-08 10:04:44,246 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:04:44,246 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:04:44,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-02-08 10:04:44,246 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-02-08 10:04:44,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:04:44,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1279921077, now seen corresponding path program 1 times [2025-02-08 10:04:44,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:04:44,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071294454] [2025-02-08 10:04:44,247 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:04:44,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:04:44,256 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 57 statements into 1 equivalence classes. [2025-02-08 10:04:44,261 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 57 of 57 statements. [2025-02-08 10:04:44,261 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:04:44,261 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:04:44,585 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-08 10:04:44,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:04:44,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071294454] [2025-02-08 10:04:44,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071294454] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:04:44,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:04:44,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-08 10:04:44,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23671010] [2025-02-08 10:04:44,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:04:44,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 10:04:44,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:04:44,586 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 10:04:44,586 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-02-08 10:04:44,586 INFO L87 Difference]: Start difference. First operand 344 states and 462 transitions. Second operand has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2025-02-08 10:04:44,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:04:44,909 INFO L93 Difference]: Finished difference Result 348 states and 468 transitions. [2025-02-08 10:04:44,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 10:04:44,909 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 57 [2025-02-08 10:04:44,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:04:44,911 INFO L225 Difference]: With dead ends: 348 [2025-02-08 10:04:44,911 INFO L226 Difference]: Without dead ends: 347 [2025-02-08 10:04:44,911 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-02-08 10:04:44,912 INFO L435 NwaCegarLoop]: 129 mSDtfsCounter, 45 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 10:04:44,913 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 704 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 10:04:44,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2025-02-08 10:04:44,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2025-02-08 10:04:44,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 249 states have (on average 1.5823293172690762) internal successors, (394), 306 states have internal predecessors, (394), 31 states have call successors, (31), 10 states have call predecessors, (31), 13 states have return successors, (41), 31 states have call predecessors, (41), 31 states have call successors, (41) [2025-02-08 10:04:44,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 466 transitions. [2025-02-08 10:04:44,932 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 466 transitions. Word has length 57 [2025-02-08 10:04:44,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:04:44,932 INFO L471 AbstractCegarLoop]: Abstraction has 347 states and 466 transitions. [2025-02-08 10:04:44,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2025-02-08 10:04:44,932 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 466 transitions. [2025-02-08 10:04:44,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2025-02-08 10:04:44,933 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:04:44,933 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:04:44,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-02-08 10:04:44,933 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting func_to_recursive_line_33_to_48_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-02-08 10:04:44,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:04:44,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1279710678, now seen corresponding path program 1 times [2025-02-08 10:04:44,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:04:44,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687894892] [2025-02-08 10:04:44,933 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:04:44,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:04:44,942 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 57 statements into 1 equivalence classes. [2025-02-08 10:04:44,947 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 57 of 57 statements. [2025-02-08 10:04:44,947 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:04:44,947 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:04:45,193 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-08 10:04:45,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:04:45,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687894892] [2025-02-08 10:04:45,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687894892] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:04:45,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:04:45,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 10:04:45,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851609624] [2025-02-08 10:04:45,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:04:45,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 10:04:45,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:04:45,195 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 10:04:45,195 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 10:04:45,195 INFO L87 Difference]: Start difference. First operand 347 states and 466 transitions. Second operand has 6 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-08 10:04:45,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:04:45,406 INFO L93 Difference]: Finished difference Result 366 states and 474 transitions. [2025-02-08 10:04:45,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 10:04:45,408 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 57 [2025-02-08 10:04:45,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:04:45,409 INFO L225 Difference]: With dead ends: 366 [2025-02-08 10:04:45,409 INFO L226 Difference]: Without dead ends: 364 [2025-02-08 10:04:45,409 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-02-08 10:04:45,410 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 72 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 10:04:45,410 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 657 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 10:04:45,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2025-02-08 10:04:45,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 349. [2025-02-08 10:04:45,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 251 states have (on average 1.5776892430278884) internal successors, (396), 308 states have internal predecessors, (396), 31 states have call successors, (31), 10 states have call predecessors, (31), 13 states have return successors, (41), 31 states have call predecessors, (41), 31 states have call successors, (41) [2025-02-08 10:04:45,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 468 transitions. [2025-02-08 10:04:45,429 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 468 transitions. Word has length 57 [2025-02-08 10:04:45,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:04:45,429 INFO L471 AbstractCegarLoop]: Abstraction has 349 states and 468 transitions. [2025-02-08 10:04:45,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-08 10:04:45,429 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 468 transitions. [2025-02-08 10:04:45,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2025-02-08 10:04:45,430 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:04:45,430 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:04:45,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-02-08 10:04:45,430 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting func_to_recursive_line_33_to_48_0Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-02-08 10:04:45,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:04:45,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1280110870, now seen corresponding path program 1 times [2025-02-08 10:04:45,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:04:45,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536799214] [2025-02-08 10:04:45,430 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:04:45,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:04:45,439 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 57 statements into 1 equivalence classes. [2025-02-08 10:04:45,443 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 57 of 57 statements. [2025-02-08 10:04:45,443 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:04:45,443 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:04:45,622 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-08 10:04:45,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:04:45,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536799214] [2025-02-08 10:04:45,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536799214] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:04:45,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:04:45,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 10:04:45,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482376059] [2025-02-08 10:04:45,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:04:45,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 10:04:45,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:04:45,624 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 10:04:45,624 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 10:04:45,625 INFO L87 Difference]: Start difference. First operand 349 states and 468 transitions. Second operand has 6 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-08 10:04:45,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:04:45,759 INFO L93 Difference]: Finished difference Result 386 states and 478 transitions. [2025-02-08 10:04:45,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 10:04:45,760 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 57 [2025-02-08 10:04:45,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:04:45,761 INFO L225 Difference]: With dead ends: 386 [2025-02-08 10:04:45,761 INFO L226 Difference]: Without dead ends: 384 [2025-02-08 10:04:45,761 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-02-08 10:04:45,762 INFO L435 NwaCegarLoop]: 147 mSDtfsCounter, 109 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 10:04:45,762 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 683 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 10:04:45,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2025-02-08 10:04:45,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 349. [2025-02-08 10:04:45,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 251 states have (on average 1.5697211155378485) internal successors, (394), 308 states have internal predecessors, (394), 31 states have call successors, (31), 10 states have call predecessors, (31), 13 states have return successors, (41), 31 states have call predecessors, (41), 31 states have call successors, (41) [2025-02-08 10:04:45,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 466 transitions. [2025-02-08 10:04:45,780 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 466 transitions. Word has length 57 [2025-02-08 10:04:45,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:04:45,780 INFO L471 AbstractCegarLoop]: Abstraction has 349 states and 466 transitions. [2025-02-08 10:04:45,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-08 10:04:45,780 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 466 transitions. [2025-02-08 10:04:45,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-02-08 10:04:45,781 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:04:45,781 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:04:45,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-02-08 10:04:45,781 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-02-08 10:04:45,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:04:45,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1022847613, now seen corresponding path program 1 times [2025-02-08 10:04:45,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:04:45,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239491799] [2025-02-08 10:04:45,781 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:04:45,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:04:45,790 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-02-08 10:04:45,795 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-02-08 10:04:45,795 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:04:45,795 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:04:46,028 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-08 10:04:46,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:04:46,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239491799] [2025-02-08 10:04:46,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239491799] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:04:46,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:04:46,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-08 10:04:46,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464871825] [2025-02-08 10:04:46,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:04:46,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 10:04:46,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:04:46,029 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 10:04:46,029 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-02-08 10:04:46,029 INFO L87 Difference]: Start difference. First operand 349 states and 466 transitions. Second operand has 8 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2025-02-08 10:04:46,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:04:46,223 INFO L93 Difference]: Finished difference Result 350 states and 466 transitions. [2025-02-08 10:04:46,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 10:04:46,223 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 58 [2025-02-08 10:04:46,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:04:46,224 INFO L225 Difference]: With dead ends: 350 [2025-02-08 10:04:46,225 INFO L226 Difference]: Without dead ends: 349 [2025-02-08 10:04:46,225 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-02-08 10:04:46,226 INFO L435 NwaCegarLoop]: 130 mSDtfsCounter, 78 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 10:04:46,226 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 589 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 10:04:46,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2025-02-08 10:04:46,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 349. [2025-02-08 10:04:46,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 251 states have (on average 1.5617529880478087) internal successors, (392), 308 states have internal predecessors, (392), 31 states have call successors, (31), 10 states have call predecessors, (31), 13 states have return successors, (41), 31 states have call predecessors, (41), 31 states have call successors, (41) [2025-02-08 10:04:46,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 464 transitions. [2025-02-08 10:04:46,246 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 464 transitions. Word has length 58 [2025-02-08 10:04:46,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:04:46,246 INFO L471 AbstractCegarLoop]: Abstraction has 349 states and 464 transitions. [2025-02-08 10:04:46,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2025-02-08 10:04:46,246 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 464 transitions. [2025-02-08 10:04:46,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-02-08 10:04:46,247 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:04:46,247 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:04:46,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-02-08 10:04:46,247 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting func_to_recursive_line_33_to_48_0Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-02-08 10:04:46,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:04:46,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1441315288, now seen corresponding path program 1 times [2025-02-08 10:04:46,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:04:46,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154549250] [2025-02-08 10:04:46,248 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:04:46,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:04:46,257 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-02-08 10:04:46,261 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-02-08 10:04:46,262 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:04:46,262 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:04:46,501 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-08 10:04:46,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:04:46,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154549250] [2025-02-08 10:04:46,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154549250] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:04:46,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:04:46,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 10:04:46,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187189346] [2025-02-08 10:04:46,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:04:46,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 10:04:46,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:04:46,502 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 10:04:46,502 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 10:04:46,502 INFO L87 Difference]: Start difference. First operand 349 states and 464 transitions. Second operand has 6 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-08 10:04:46,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:04:46,644 INFO L93 Difference]: Finished difference Result 389 states and 484 transitions. [2025-02-08 10:04:46,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 10:04:46,645 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 59 [2025-02-08 10:04:46,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:04:46,646 INFO L225 Difference]: With dead ends: 389 [2025-02-08 10:04:46,646 INFO L226 Difference]: Without dead ends: 387 [2025-02-08 10:04:46,646 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-02-08 10:04:46,647 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 106 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 10:04:46,647 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 652 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 10:04:46,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2025-02-08 10:04:46,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 349. [2025-02-08 10:04:46,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 251 states have (on average 1.5537848605577689) internal successors, (390), 308 states have internal predecessors, (390), 31 states have call successors, (31), 10 states have call predecessors, (31), 13 states have return successors, (41), 31 states have call predecessors, (41), 31 states have call successors, (41) [2025-02-08 10:04:46,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 462 transitions. [2025-02-08 10:04:46,668 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 462 transitions. Word has length 59 [2025-02-08 10:04:46,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:04:46,668 INFO L471 AbstractCegarLoop]: Abstraction has 349 states and 462 transitions. [2025-02-08 10:04:46,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-08 10:04:46,669 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 462 transitions. [2025-02-08 10:04:46,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-02-08 10:04:46,669 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:04:46,669 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:04:46,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2025-02-08 10:04:46,669 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-02-08 10:04:46,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:04:46,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1825900216, now seen corresponding path program 1 times [2025-02-08 10:04:46,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:04:46,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076559356] [2025-02-08 10:04:46,670 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:04:46,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:04:46,679 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-02-08 10:04:46,683 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-02-08 10:04:46,683 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:04:46,683 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:04:46,875 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-08 10:04:46,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:04:46,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076559356] [2025-02-08 10:04:46,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076559356] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:04:46,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:04:46,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 10:04:46,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110177112] [2025-02-08 10:04:46,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:04:46,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 10:04:46,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:04:46,876 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 10:04:46,876 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 10:04:46,876 INFO L87 Difference]: Start difference. First operand 349 states and 462 transitions. Second operand has 6 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-08 10:04:46,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:04:46,997 INFO L93 Difference]: Finished difference Result 365 states and 470 transitions. [2025-02-08 10:04:46,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 10:04:46,997 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 59 [2025-02-08 10:04:46,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:04:46,999 INFO L225 Difference]: With dead ends: 365 [2025-02-08 10:04:47,000 INFO L226 Difference]: Without dead ends: 363 [2025-02-08 10:04:47,000 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-02-08 10:04:47,000 INFO L435 NwaCegarLoop]: 139 mSDtfsCounter, 69 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 10:04:47,000 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 659 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 10:04:47,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2025-02-08 10:04:47,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 353. [2025-02-08 10:04:47,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 255 states have (on average 1.5450980392156863) internal successors, (394), 312 states have internal predecessors, (394), 31 states have call successors, (31), 10 states have call predecessors, (31), 13 states have return successors, (41), 31 states have call predecessors, (41), 31 states have call successors, (41) [2025-02-08 10:04:47,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 466 transitions. [2025-02-08 10:04:47,019 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 466 transitions. Word has length 59 [2025-02-08 10:04:47,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:04:47,019 INFO L471 AbstractCegarLoop]: Abstraction has 353 states and 466 transitions. [2025-02-08 10:04:47,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-08 10:04:47,020 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 466 transitions. [2025-02-08 10:04:47,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-02-08 10:04:47,020 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:04:47,020 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:04:47,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-02-08 10:04:47,020 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting func_to_recursive_line_33_to_48_0Err29ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-02-08 10:04:47,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:04:47,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1021390891, now seen corresponding path program 1 times [2025-02-08 10:04:47,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:04:47,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318264732] [2025-02-08 10:04:47,021 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:04:47,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:04:47,033 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-02-08 10:04:47,050 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-02-08 10:04:47,050 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:04:47,050 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:04:47,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [413406016] [2025-02-08 10:04:47,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:04:47,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:04:47,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:04:47,059 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:04:47,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-02-08 10:04:47,157 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-02-08 10:04:47,200 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-02-08 10:04:47,200 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:04:47,200 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:04:47,202 INFO L256 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 65 conjuncts are in the unsatisfiable core [2025-02-08 10:04:47,205 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:04:47,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-08 10:04:47,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-08 10:04:47,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-08 10:04:47,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 11 [2025-02-08 10:04:47,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-02-08 10:04:47,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-02-08 10:04:47,582 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-08 10:04:47,582 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:04:47,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:04:47,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318264732] [2025-02-08 10:04:47,842 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:04:47,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413406016] [2025-02-08 10:04:47,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413406016] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:04:47,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-02-08 10:04:47,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2025-02-08 10:04:47,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709678339] [2025-02-08 10:04:47,842 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-02-08 10:04:47,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-08 10:04:47,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:04:47,842 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-08 10:04:47,843 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2025-02-08 10:04:47,843 INFO L87 Difference]: Start difference. First operand 353 states and 466 transitions. Second operand has 10 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-08 10:04:51,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-08 10:04:52,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:04:52,151 INFO L93 Difference]: Finished difference Result 418 states and 492 transitions. [2025-02-08 10:04:52,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 10:04:52,152 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 64 [2025-02-08 10:04:52,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:04:52,153 INFO L225 Difference]: With dead ends: 418 [2025-02-08 10:04:52,154 INFO L226 Difference]: Without dead ends: 417 [2025-02-08 10:04:52,154 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 59 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2025-02-08 10:04:52,154 INFO L435 NwaCegarLoop]: 122 mSDtfsCounter, 189 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2025-02-08 10:04:52,154 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 926 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 240 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2025-02-08 10:04:52,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2025-02-08 10:04:52,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 353. [2025-02-08 10:04:52,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 255 states have (on average 1.5411764705882354) internal successors, (393), 312 states have internal predecessors, (393), 31 states have call successors, (31), 10 states have call predecessors, (31), 13 states have return successors, (41), 31 states have call predecessors, (41), 31 states have call successors, (41) [2025-02-08 10:04:52,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 465 transitions. [2025-02-08 10:04:52,173 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 465 transitions. Word has length 64 [2025-02-08 10:04:52,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:04:52,173 INFO L471 AbstractCegarLoop]: Abstraction has 353 states and 465 transitions. [2025-02-08 10:04:52,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-08 10:04:52,174 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 465 transitions. [2025-02-08 10:04:52,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-02-08 10:04:52,174 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:04:52,174 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:04:52,184 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-02-08 10:04:52,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:04:52,375 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting func_to_recursive_line_33_to_48_0Err29ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-02-08 10:04:52,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:04:52,375 INFO L85 PathProgramCache]: Analyzing trace with hash 927391528, now seen corresponding path program 1 times [2025-02-08 10:04:52,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:04:52,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616469070] [2025-02-08 10:04:52,375 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:04:52,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:04:52,386 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-02-08 10:04:52,419 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-02-08 10:04:52,420 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:04:52,420 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:04:52,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1765883422] [2025-02-08 10:04:52,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:04:52,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:04:52,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:04:52,423 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:04:52,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-02-08 10:04:52,539 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-02-08 10:04:52,578 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-02-08 10:04:52,579 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:04:52,579 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:04:52,581 INFO L256 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 66 conjuncts are in the unsatisfiable core [2025-02-08 10:04:52,583 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:04:52,592 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-08 10:04:52,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-08 10:04:52,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-08 10:04:52,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-02-08 10:04:52,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 11 [2025-02-08 10:04:52,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-02-08 10:04:52,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-02-08 10:04:52,984 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-08 10:04:52,984 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:04:53,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:04:53,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616469070] [2025-02-08 10:04:53,231 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:04:53,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765883422] [2025-02-08 10:04:53,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765883422] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:04:53,232 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-02-08 10:04:53,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2025-02-08 10:04:53,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147060741] [2025-02-08 10:04:53,232 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-02-08 10:04:53,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-08 10:04:53,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:04:53,233 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-08 10:04:53,233 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2025-02-08 10:04:53,233 INFO L87 Difference]: Start difference. First operand 353 states and 465 transitions. Second operand has 10 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-08 10:04:53,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:04:53,549 INFO L93 Difference]: Finished difference Result 426 states and 497 transitions. [2025-02-08 10:04:53,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 10:04:53,553 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 64 [2025-02-08 10:04:53,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:04:53,554 INFO L225 Difference]: With dead ends: 426 [2025-02-08 10:04:53,554 INFO L226 Difference]: Without dead ends: 425 [2025-02-08 10:04:53,554 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 59 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2025-02-08 10:04:53,555 INFO L435 NwaCegarLoop]: 133 mSDtfsCounter, 289 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 917 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 10:04:53,555 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 917 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 10:04:53,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2025-02-08 10:04:53,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 353. [2025-02-08 10:04:53,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 255 states have (on average 1.5372549019607844) internal successors, (392), 312 states have internal predecessors, (392), 31 states have call successors, (31), 10 states have call predecessors, (31), 13 states have return successors, (41), 31 states have call predecessors, (41), 31 states have call successors, (41) [2025-02-08 10:04:53,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 464 transitions. [2025-02-08 10:04:53,593 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 464 transitions. Word has length 64 [2025-02-08 10:04:53,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:04:53,593 INFO L471 AbstractCegarLoop]: Abstraction has 353 states and 464 transitions. [2025-02-08 10:04:53,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-08 10:04:53,593 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 464 transitions. [2025-02-08 10:04:53,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-02-08 10:04:53,594 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:04:53,594 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:04:53,602 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 [2025-02-08 10:04:53,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-02-08 10:04:53,794 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-02-08 10:04:53,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:04:53,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1137791446, now seen corresponding path program 1 times [2025-02-08 10:04:53,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:04:53,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985260354] [2025-02-08 10:04:53,795 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:04:53,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:04:53,803 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-02-08 10:04:53,819 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-02-08 10:04:53,820 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:04:53,820 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:04:53,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1163437102] [2025-02-08 10:04:53,821 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:04:53,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:04:53,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:04:53,826 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:04:53,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-02-08 10:04:53,925 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-02-08 10:04:53,958 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-02-08 10:04:53,958 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:04:53,958 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:04:53,959 INFO L256 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-08 10:04:53,961 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:04:54,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-08 10:04:54,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-02-08 10:04:54,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-02-08 10:04:54,304 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 10:04:54,304 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:04:54,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:04:54,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985260354] [2025-02-08 10:04:54,364 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:04:54,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163437102] [2025-02-08 10:04:54,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163437102] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:04:54,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-02-08 10:04:54,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2025-02-08 10:04:54,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314302067] [2025-02-08 10:04:54,365 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-02-08 10:04:54,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-08 10:04:54,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:04:54,365 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-08 10:04:54,365 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2025-02-08 10:04:54,365 INFO L87 Difference]: Start difference. First operand 353 states and 464 transitions. Second operand has 11 states, 9 states have (on average 5.0) internal successors, (45), 10 states have internal predecessors, (45), 4 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2025-02-08 10:04:58,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-08 10:05:02,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]