./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_ps6.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c00e63dc 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_ps6.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 635e58724a56c62caeff3bee7749decbe4fed7f75c2f747c3a69f15f74dc7ff3 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 14:36:49,517 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 14:36:49,567 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-06 14:36:49,570 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 14:36:49,571 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 14:36:49,592 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 14:36:49,592 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 14:36:49,592 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 14:36:49,593 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 14:36:49,594 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 14:36:49,594 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 14:36:49,594 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 14:36:49,595 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 14:36:49,595 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 14:36:49,595 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 14:36:49,595 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 14:36:49,595 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 14:36:49,595 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 14:36:49,596 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 14:36:49,596 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 14:36:49,596 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 14:36:49,596 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 14:36:49,596 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 14:36:49,596 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 14:36:49,596 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-06 14:36:49,596 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 14:36:49,596 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 14:36:49,596 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 14:36:49,596 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 14:36:49,596 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 14:36:49,597 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 14:36:49,597 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 14:36:49,597 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 14:36:49,597 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 14:36:49,597 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 14:36:49,597 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 14:36:49,597 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 14:36:49,597 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 14:36:49,597 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 14:36:49,597 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 14:36:49,597 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 14:36:49,598 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 14:36:49,598 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 14:36:49,598 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 14:36:49,598 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 14:36:49,598 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 -> 635e58724a56c62caeff3bee7749decbe4fed7f75c2f747c3a69f15f74dc7ff3 [2025-02-06 14:36:49,818 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 14:36:49,826 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 14:36:49,828 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 14:36:49,829 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 14:36:49,829 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 14:36:49,831 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_nla-digbench/recursified_ps6.c [2025-02-06 14:36:50,977 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9f457e0d6/7cc426ecdbef48a39bdf928d5192546c/FLAGd174c0df2 [2025-02-06 14:36:51,216 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 14:36:51,219 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_ps6.c [2025-02-06 14:36:51,226 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9f457e0d6/7cc426ecdbef48a39bdf928d5192546c/FLAGd174c0df2 [2025-02-06 14:36:51,242 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9f457e0d6/7cc426ecdbef48a39bdf928d5192546c [2025-02-06 14:36:51,244 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 14:36:51,245 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 14:36:51,247 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 14:36:51,247 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 14:36:51,250 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 14:36:51,251 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 02:36:51" (1/1) ... [2025-02-06 14:36:51,251 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e2b7469 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:36:51, skipping insertion in model container [2025-02-06 14:36:51,251 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 02:36:51" (1/1) ... [2025-02-06 14:36:51,265 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 14:36:51,398 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 14:36:51,405 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 14:36:51,424 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 14:36:51,438 INFO L204 MainTranslator]: Completed translation [2025-02-06 14:36:51,440 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:36:51 WrapperNode [2025-02-06 14:36:51,440 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 14:36:51,441 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 14:36:51,441 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 14:36:51,441 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 14:36:51,448 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:36:51" (1/1) ... [2025-02-06 14:36:51,454 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:36:51" (1/1) ... [2025-02-06 14:36:51,478 INFO L138 Inliner]: procedures = 16, calls = 88, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 143 [2025-02-06 14:36:51,480 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 14:36:51,480 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 14:36:51,480 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 14:36:51,480 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 14:36:51,487 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:36:51" (1/1) ... [2025-02-06 14:36:51,487 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:36:51" (1/1) ... [2025-02-06 14:36:51,489 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:36:51" (1/1) ... [2025-02-06 14:36:51,503 INFO L175 MemorySlicer]: Split 65 memory accesses to 6 slices as follows [2, 6, 4, 5, 45, 3]. 69 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 6, 0, 0, 0, 0]. The 7 writes are split as follows [0, 0, 2, 2, 2, 1]. [2025-02-06 14:36:51,503 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:36:51" (1/1) ... [2025-02-06 14:36:51,503 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:36:51" (1/1) ... [2025-02-06 14:36:51,507 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:36:51" (1/1) ... [2025-02-06 14:36:51,508 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:36:51" (1/1) ... [2025-02-06 14:36:51,509 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:36:51" (1/1) ... [2025-02-06 14:36:51,510 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:36:51" (1/1) ... [2025-02-06 14:36:51,512 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 14:36:51,513 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 14:36:51,513 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 14:36:51,513 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 14:36:51,514 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:36:51" (1/1) ... [2025-02-06 14:36:51,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 14:36:51,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:36:51,545 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) [2025-02-06 14:36:51,551 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 [2025-02-06 14:36:51,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 14:36:51,567 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_25_to_33_0 [2025-02-06 14:36:51,567 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_25_to_33_0 [2025-02-06 14:36:51,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 14:36:51,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 14:36:51,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-06 14:36:51,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-06 14:36:51,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-02-06 14:36:51,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-02-06 14:36:51,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-06 14:36:51,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 14:36:51,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 14:36:51,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-06 14:36:51,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-02-06 14:36:51,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-02-06 14:36:51,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-02-06 14:36:51,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 14:36:51,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 14:36:51,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 14:36:51,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 14:36:51,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-06 14:36:51,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-02-06 14:36:51,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-02-06 14:36:51,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-02-06 14:36:51,571 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-06 14:36:51,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-06 14:36:51,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 14:36:51,659 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 14:36:51,660 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 14:36:52,417 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L73: call ULTIMATE.dealloc(main_~#k~0#1.base, main_~#k~0#1.offset);havoc main_~#k~0#1.base, main_~#k~0#1.offset;call ULTIMATE.dealloc(main_~#y~0#1.base, main_~#y~0#1.offset);havoc main_~#y~0#1.base, main_~#y~0#1.offset;call ULTIMATE.dealloc(main_~#x~0#1.base, main_~#x~0#1.offset);havoc main_~#x~0#1.base, main_~#x~0#1.offset;call ULTIMATE.dealloc(main_~#c~0#1.base, main_~#c~0#1.offset);havoc main_~#c~0#1.base, main_~#c~0#1.offset; [2025-02-06 14:36:52,454 INFO L? ?]: Removed 499 outVars from TransFormulas that were not future-live. [2025-02-06 14:36:52,454 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 14:36:52,471 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 14:36:52,471 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 14:36:52,471 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 02:36:52 BoogieIcfgContainer [2025-02-06 14:36:52,471 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 14:36:52,473 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 14:36:52,473 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 14:36:52,476 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 14:36:52,477 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 02:36:51" (1/3) ... [2025-02-06 14:36:52,477 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a404a83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 02:36:52, skipping insertion in model container [2025-02-06 14:36:52,478 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:36:51" (2/3) ... [2025-02-06 14:36:52,478 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a404a83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 02:36:52, skipping insertion in model container [2025-02-06 14:36:52,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 02:36:52" (3/3) ... [2025-02-06 14:36:52,479 INFO L128 eAbstractionObserver]: Analyzing ICFG recursified_ps6.c [2025-02-06 14:36:52,492 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 14:36:52,493 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG recursified_ps6.c that has 3 procedures, 229 locations, 1 initial locations, 0 loop locations, and 102 error locations. [2025-02-06 14:36:52,541 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 14:36:52,553 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;@1f168fbb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 14:36:52,553 INFO L334 AbstractCegarLoop]: Starting to check reachability of 102 error locations. [2025-02-06 14:36:52,556 INFO L276 IsEmpty]: Start isEmpty. Operand has 229 states, 119 states have (on average 1.8823529411764706) internal successors, (224), 222 states have internal predecessors, (224), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-06 14:36:52,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-02-06 14:36:52,559 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:36:52,559 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-06 14:36:52,560 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_25_to_33_0Err55ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2025-02-06 14:36:52,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:36:52,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1046703513, now seen corresponding path program 1 times [2025-02-06 14:36:52,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:36:52,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799626330] [2025-02-06 14:36:52,568 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:36:52,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:36:52,648 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 14:36:52,679 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 14:36:52,680 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:36:52,680 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:36:53,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 14:36:53,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:36:53,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799626330] [2025-02-06 14:36:53,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799626330] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:36:53,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:36:53,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 14:36:53,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184198470] [2025-02-06 14:36:53,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:36:53,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 14:36:53,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:36:53,034 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 14:36:53,035 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 14:36:53,038 INFO L87 Difference]: Start difference. First operand has 229 states, 119 states have (on average 1.8823529411764706) internal successors, (224), 222 states have internal predecessors, (224), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 14:36:53,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:36:53,453 INFO L93 Difference]: Finished difference Result 632 states and 664 transitions. [2025-02-06 14:36:53,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 14:36:53,455 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2025-02-06 14:36:53,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:36:53,462 INFO L225 Difference]: With dead ends: 632 [2025-02-06 14:36:53,462 INFO L226 Difference]: Without dead ends: 400 [2025-02-06 14:36:53,465 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 [2025-02-06 14:36:53,466 INFO L435 NwaCegarLoop]: 173 mSDtfsCounter, 322 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 14:36:53,467 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 872 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 14:36:53,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2025-02-06 14:36:53,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 271. [2025-02-06 14:36:53,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 161 states have (on average 1.826086956521739) internal successors, (294), 263 states have internal predecessors, (294), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2025-02-06 14:36:53,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 305 transitions. [2025-02-06 14:36:53,512 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 305 transitions. Word has length 6 [2025-02-06 14:36:53,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:36:53,513 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 305 transitions. [2025-02-06 14:36:53,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 14:36:53,513 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 305 transitions. [2025-02-06 14:36:53,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-02-06 14:36:53,513 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:36:53,513 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:36:53,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 14:36:53,514 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_25_to_33_0Err43ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2025-02-06 14:36:53,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:36:53,514 INFO L85 PathProgramCache]: Analyzing trace with hash 122593179, now seen corresponding path program 1 times [2025-02-06 14:36:53,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:36:53,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41839532] [2025-02-06 14:36:53,514 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:36:53,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:36:53,523 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 14:36:53,535 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 14:36:53,535 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:36:53,535 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:36:53,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 14:36:53,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:36:53,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41839532] [2025-02-06 14:36:53,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41839532] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:36:53,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:36:53,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 14:36:53,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250769829] [2025-02-06 14:36:53,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:36:53,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 14:36:53,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:36:53,736 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 14:36:53,736 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 14:36:53,737 INFO L87 Difference]: Start difference. First operand 271 states and 305 transitions. Second operand has 6 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 14:36:54,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:36:54,032 INFO L93 Difference]: Finished difference Result 400 states and 405 transitions. [2025-02-06 14:36:54,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 14:36:54,032 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-02-06 14:36:54,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:36:54,034 INFO L225 Difference]: With dead ends: 400 [2025-02-06 14:36:54,034 INFO L226 Difference]: Without dead ends: 390 [2025-02-06 14:36:54,034 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 [2025-02-06 14:36:54,035 INFO L435 NwaCegarLoop]: 166 mSDtfsCounter, 268 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 14:36:54,035 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 837 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 14:36:54,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2025-02-06 14:36:54,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 271. [2025-02-06 14:36:54,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 161 states have (on average 1.763975155279503) internal successors, (284), 263 states have internal predecessors, (284), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2025-02-06 14:36:54,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 295 transitions. [2025-02-06 14:36:54,045 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 295 transitions. Word has length 18 [2025-02-06 14:36:54,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:36:54,045 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 295 transitions. [2025-02-06 14:36:54,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 14:36:54,045 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 295 transitions. [2025-02-06 14:36:54,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-02-06 14:36:54,046 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:36:54,046 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:36:54,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 14:36:54,046 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_25_to_33_0Err33ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2025-02-06 14:36:54,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:36:54,046 INFO L85 PathProgramCache]: Analyzing trace with hash 746708977, now seen corresponding path program 1 times [2025-02-06 14:36:54,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:36:54,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018932859] [2025-02-06 14:36:54,047 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:36:54,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:36:54,059 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-06 14:36:54,080 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-06 14:36:54,081 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:36:54,081 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-06 14:36:54,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [666340941] [2025-02-06 14:36:54,082 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:36:54,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:36:54,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:36:54,088 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) [2025-02-06 14:36:54,090 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 [2025-02-06 14:36:54,138 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-06 14:36:54,157 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-06 14:36:54,157 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:36:54,157 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:36:54,159 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-02-06 14:36:54,168 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:36:54,193 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 [2025-02-06 14:36:54,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 14:36:54,372 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 14:36:54,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:36:54,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018932859] [2025-02-06 14:36:54,373 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-06 14:36:54,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666340941] [2025-02-06 14:36:54,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666340941] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:36:54,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:36:54,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 14:36:54,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014204454] [2025-02-06 14:36:54,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:36:54,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 14:36:54,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:36:54,374 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 14:36:54,375 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-02-06 14:36:54,375 INFO L87 Difference]: Start difference. First operand 271 states and 295 transitions. Second operand has 8 states, 6 states have (on average 4.5) internal successors, (27), 7 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 14:36:54,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:36:54,746 INFO L93 Difference]: Finished difference Result 390 states and 395 transitions. [2025-02-06 14:36:54,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 14:36:54,746 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 4.5) internal successors, (27), 7 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2025-02-06 14:36:54,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:36:54,747 INFO L225 Difference]: With dead ends: 390 [2025-02-06 14:36:54,747 INFO L226 Difference]: Without dead ends: 389 [2025-02-06 14:36:54,748 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2025-02-06 14:36:54,748 INFO L435 NwaCegarLoop]: 161 mSDtfsCounter, 303 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 14:36:54,748 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 974 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 14:36:54,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2025-02-06 14:36:54,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 271. [2025-02-06 14:36:54,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 161 states have (on average 1.7577639751552796) internal successors, (283), 263 states have internal predecessors, (283), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2025-02-06 14:36:54,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 294 transitions. [2025-02-06 14:36:54,763 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 294 transitions. Word has length 28 [2025-02-06 14:36:54,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:36:54,763 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 294 transitions. [2025-02-06 14:36:54,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 4.5) internal successors, (27), 7 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 14:36:54,763 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 294 transitions. [2025-02-06 14:36:54,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-02-06 14:36:54,763 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:36:54,763 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:36:54,774 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 14:36:54,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:36:54,969 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_25_to_33_0Err32ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2025-02-06 14:36:54,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:36:54,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1673141848, now seen corresponding path program 1 times [2025-02-06 14:36:54,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:36:54,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732122675] [2025-02-06 14:36:54,970 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:36:54,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:36:54,980 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-06 14:36:54,988 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-06 14:36:54,988 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:36:54,988 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-06 14:36:54,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1208777367] [2025-02-06 14:36:54,990 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:36:54,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:36:54,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:36:54,998 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) [2025-02-06 14:36:54,999 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 [2025-02-06 14:36:55,047 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-06 14:36:55,067 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-06 14:36:55,067 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:36:55,067 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:36:55,068 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-02-06 14:36:55,070 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:36:55,074 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 [2025-02-06 14:36:55,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 14:36:55,183 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 14:36:55,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:36:55,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732122675] [2025-02-06 14:36:55,183 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-06 14:36:55,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208777367] [2025-02-06 14:36:55,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208777367] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:36:55,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:36:55,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 14:36:55,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610007619] [2025-02-06 14:36:55,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:36:55,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 14:36:55,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:36:55,184 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 14:36:55,184 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-06 14:36:55,184 INFO L87 Difference]: Start difference. First operand 271 states and 294 transitions. Second operand has 7 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 14:36:55,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:36:55,496 INFO L93 Difference]: Finished difference Result 389 states and 394 transitions. [2025-02-06 14:36:55,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 14:36:55,496 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2025-02-06 14:36:55,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:36:55,497 INFO L225 Difference]: With dead ends: 389 [2025-02-06 14:36:55,497 INFO L226 Difference]: Without dead ends: 388 [2025-02-06 14:36:55,497 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-02-06 14:36:55,498 INFO L435 NwaCegarLoop]: 163 mSDtfsCounter, 292 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 14:36:55,498 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 825 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 14:36:55,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2025-02-06 14:36:55,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 271. [2025-02-06 14:36:55,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 161 states have (on average 1.7515527950310559) internal successors, (282), 263 states have internal predecessors, (282), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2025-02-06 14:36:55,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 293 transitions. [2025-02-06 14:36:55,510 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 293 transitions. Word has length 29 [2025-02-06 14:36:55,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:36:55,510 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 293 transitions. [2025-02-06 14:36:55,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 14:36:55,510 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 293 transitions. [2025-02-06 14:36:55,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-02-06 14:36:55,510 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:36:55,510 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:36:55,518 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-06 14:36:55,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:36:55,716 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_25_to_33_0Err31ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2025-02-06 14:36:55,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:36:55,716 INFO L85 PathProgramCache]: Analyzing trace with hash 327789775, now seen corresponding path program 1 times [2025-02-06 14:36:55,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:36:55,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585306123] [2025-02-06 14:36:55,717 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:36:55,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:36:55,733 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-02-06 14:36:55,740 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-02-06 14:36:55,743 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:36:55,743 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:36:55,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 14:36:55,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:36:55,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585306123] [2025-02-06 14:36:55,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585306123] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:36:55,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:36:55,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 14:36:55,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415424785] [2025-02-06 14:36:55,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:36:55,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 14:36:55,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:36:55,898 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 14:36:55,898 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 14:36:55,898 INFO L87 Difference]: Start difference. First operand 271 states and 293 transitions. Second operand has 6 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 14:36:56,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:36:56,110 INFO L93 Difference]: Finished difference Result 388 states and 393 transitions. [2025-02-06 14:36:56,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 14:36:56,110 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2025-02-06 14:36:56,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:36:56,111 INFO L225 Difference]: With dead ends: 388 [2025-02-06 14:36:56,111 INFO L226 Difference]: Without dead ends: 380 [2025-02-06 14:36:56,112 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 [2025-02-06 14:36:56,112 INFO L435 NwaCegarLoop]: 170 mSDtfsCounter, 216 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 14:36:56,112 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 848 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 14:36:56,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2025-02-06 14:36:56,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 271. [2025-02-06 14:36:56,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 161 states have (on average 1.7018633540372672) internal successors, (274), 263 states have internal predecessors, (274), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2025-02-06 14:36:56,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 285 transitions. [2025-02-06 14:36:56,121 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 285 transitions. Word has length 30 [2025-02-06 14:36:56,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:36:56,121 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 285 transitions. [2025-02-06 14:36:56,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 14:36:56,121 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 285 transitions. [2025-02-06 14:36:56,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-02-06 14:36:56,122 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:36:56,122 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:36:56,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 14:36:56,122 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_25_to_33_0Err23ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2025-02-06 14:36:56,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:36:56,122 INFO L85 PathProgramCache]: Analyzing trace with hash -779395001, now seen corresponding path program 1 times [2025-02-06 14:36:56,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:36:56,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425523308] [2025-02-06 14:36:56,122 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:36:56,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:36:56,133 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-02-06 14:36:56,156 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-02-06 14:36:56,156 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:36:56,156 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-06 14:36:56,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [572643317] [2025-02-06 14:36:56,157 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:36:56,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:36:56,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:36:56,159 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) [2025-02-06 14:36:56,163 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 [2025-02-06 14:36:56,203 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-02-06 14:36:56,222 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-02-06 14:36:56,222 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:36:56,222 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:36:56,223 INFO L256 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-02-06 14:36:56,225 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:36:56,229 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 [2025-02-06 14:36:56,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 14:36:56,415 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 14:36:56,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:36:56,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425523308] [2025-02-06 14:36:56,415 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-06 14:36:56,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572643317] [2025-02-06 14:36:56,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572643317] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:36:56,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:36:56,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 14:36:56,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124197319] [2025-02-06 14:36:56,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:36:56,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 14:36:56,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:36:56,416 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 14:36:56,416 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-02-06 14:36:56,416 INFO L87 Difference]: Start difference. First operand 271 states and 285 transitions. Second operand has 8 states, 6 states have (on average 6.166666666666667) internal successors, (37), 7 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 14:36:56,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:36:56,814 INFO L93 Difference]: Finished difference Result 380 states and 385 transitions. [2025-02-06 14:36:56,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 14:36:56,814 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 6.166666666666667) internal successors, (37), 7 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2025-02-06 14:36:56,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:36:56,815 INFO L225 Difference]: With dead ends: 380 [2025-02-06 14:36:56,815 INFO L226 Difference]: Without dead ends: 379 [2025-02-06 14:36:56,816 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2025-02-06 14:36:56,816 INFO L435 NwaCegarLoop]: 159 mSDtfsCounter, 252 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 14:36:56,816 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 801 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 14:36:56,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2025-02-06 14:36:56,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 271. [2025-02-06 14:36:56,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 161 states have (on average 1.6956521739130435) internal successors, (273), 263 states have internal predecessors, (273), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2025-02-06 14:36:56,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 284 transitions. [2025-02-06 14:36:56,822 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 284 transitions. Word has length 38 [2025-02-06 14:36:56,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:36:56,822 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 284 transitions. [2025-02-06 14:36:56,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 6.166666666666667) internal successors, (37), 7 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 14:36:56,822 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 284 transitions. [2025-02-06 14:36:56,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-02-06 14:36:56,823 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:36:56,824 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:36:56,829 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-06 14:36:57,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:36:57,028 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_25_to_33_0Err22ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2025-02-06 14:36:57,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:36:57,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1608558766, now seen corresponding path program 1 times [2025-02-06 14:36:57,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:36:57,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237830813] [2025-02-06 14:36:57,031 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:36:57,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:36:57,045 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-06 14:36:57,056 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-06 14:36:57,056 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:36:57,056 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-06 14:36:57,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1921283929] [2025-02-06 14:36:57,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:36:57,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:36:57,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:36:57,060 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) [2025-02-06 14:36:57,061 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 [2025-02-06 14:36:57,109 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-06 14:36:57,125 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-06 14:36:57,125 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:36:57,126 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:36:57,127 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-02-06 14:36:57,132 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:36:57,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-06 14:36:57,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 14:36:57,310 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 14:36:57,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:36:57,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237830813] [2025-02-06 14:36:57,310 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-06 14:36:57,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921283929] [2025-02-06 14:36:57,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921283929] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:36:57,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:36:57,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 14:36:57,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507445647] [2025-02-06 14:36:57,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:36:57,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 14:36:57,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:36:57,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 14:36:57,311 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-02-06 14:36:57,311 INFO L87 Difference]: Start difference. First operand 271 states and 284 transitions. Second operand has 8 states, 6 states have (on average 6.333333333333333) internal successors, (38), 7 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 14:36:57,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:36:57,851 INFO L93 Difference]: Finished difference Result 379 states and 384 transitions. [2025-02-06 14:36:57,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 14:36:57,851 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 6.333333333333333) internal successors, (38), 7 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2025-02-06 14:36:57,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:36:57,853 INFO L225 Difference]: With dead ends: 379 [2025-02-06 14:36:57,853 INFO L226 Difference]: Without dead ends: 378 [2025-02-06 14:36:57,853 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2025-02-06 14:36:57,854 INFO L435 NwaCegarLoop]: 160 mSDtfsCounter, 208 mSDsluCounter, 908 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 1068 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-06 14:36:57,855 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 1068 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-06 14:36:57,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2025-02-06 14:36:57,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 271. [2025-02-06 14:36:57,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 161 states have (on average 1.68944099378882) internal successors, (272), 263 states have internal predecessors, (272), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2025-02-06 14:36:57,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 283 transitions. [2025-02-06 14:36:57,862 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 283 transitions. Word has length 39 [2025-02-06 14:36:57,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:36:57,862 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 283 transitions. [2025-02-06 14:36:57,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 6.333333333333333) internal successors, (38), 7 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 14:36:57,863 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 283 transitions. [2025-02-06 14:36:57,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2025-02-06 14:36:57,865 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:36:57,865 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:36:57,874 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 [2025-02-06 14:36:58,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2025-02-06 14:36:58,070 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_25_to_33_0Err21ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2025-02-06 14:36:58,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:36:58,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1674285787, now seen corresponding path program 1 times [2025-02-06 14:36:58,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:36:58,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109618640] [2025-02-06 14:36:58,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:36:58,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:36:58,084 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-02-06 14:36:58,092 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-02-06 14:36:58,093 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:36:58,093 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-06 14:36:58,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1925511469] [2025-02-06 14:36:58,093 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:36:58,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:36:58,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:36:58,095 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) [2025-02-06 14:36:58,097 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 [2025-02-06 14:36:58,162 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-02-06 14:36:58,181 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-02-06 14:36:58,181 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:36:58,181 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:36:58,182 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-02-06 14:36:58,184 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:36:58,190 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 [2025-02-06 14:36:58,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 14:36:58,250 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 14:36:58,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:36:58,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109618640] [2025-02-06 14:36:58,251 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-06 14:36:58,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925511469] [2025-02-06 14:36:58,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925511469] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:36:58,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:36:58,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 14:36:58,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654311058] [2025-02-06 14:36:58,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:36:58,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 14:36:58,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:36:58,252 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 14:36:58,252 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 14:36:58,252 INFO L87 Difference]: Start difference. First operand 271 states and 283 transitions. Second operand has 6 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 14:36:58,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:36:58,435 INFO L93 Difference]: Finished difference Result 378 states and 383 transitions. [2025-02-06 14:36:58,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 14:36:58,435 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2025-02-06 14:36:58,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:36:58,436 INFO L225 Difference]: With dead ends: 378 [2025-02-06 14:36:58,436 INFO L226 Difference]: Without dead ends: 376 [2025-02-06 14:36:58,436 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-02-06 14:36:58,437 INFO L435 NwaCegarLoop]: 176 mSDtfsCounter, 186 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 14:36:58,437 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 872 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 14:36:58,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2025-02-06 14:36:58,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 271. [2025-02-06 14:36:58,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 161 states have (on average 1.6770186335403727) internal successors, (270), 263 states have internal predecessors, (270), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2025-02-06 14:36:58,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 281 transitions. [2025-02-06 14:36:58,442 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 281 transitions. Word has length 40 [2025-02-06 14:36:58,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:36:58,442 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 281 transitions. [2025-02-06 14:36:58,442 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 14:36:58,442 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 281 transitions. [2025-02-06 14:36:58,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-02-06 14:36:58,443 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:36:58,443 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:36:58,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-06 14:36:58,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:36:58,643 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_25_to_33_0Err19ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2025-02-06 14:36:58,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:36:58,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1624095235, now seen corresponding path program 1 times [2025-02-06 14:36:58,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:36:58,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17885550] [2025-02-06 14:36:58,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:36:58,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:36:58,653 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-02-06 14:36:58,658 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-02-06 14:36:58,658 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:36:58,658 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-06 14:36:58,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1408694326] [2025-02-06 14:36:58,659 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:36:58,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:36:58,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:36:58,660 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) [2025-02-06 14:36:58,662 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 [2025-02-06 14:36:58,717 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-02-06 14:36:58,737 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-02-06 14:36:58,737 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:36:58,737 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:36:58,738 INFO L256 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-02-06 14:36:58,740 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:36:58,744 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 [2025-02-06 14:36:58,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 14:36:58,920 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 14:36:58,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:36:58,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17885550] [2025-02-06 14:36:58,921 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-06 14:36:58,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408694326] [2025-02-06 14:36:58,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408694326] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:36:58,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:36:58,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 14:36:58,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98854148] [2025-02-06 14:36:58,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:36:58,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 14:36:58,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:36:58,921 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 14:36:58,921 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-02-06 14:36:58,922 INFO L87 Difference]: Start difference. First operand 271 states and 281 transitions. Second operand has 8 states, 6 states have (on average 6.833333333333333) internal successors, (41), 7 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 14:36:59,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:36:59,471 INFO L93 Difference]: Finished difference Result 376 states and 381 transitions. [2025-02-06 14:36:59,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 14:36:59,471 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 6.833333333333333) internal successors, (41), 7 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2025-02-06 14:36:59,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:36:59,472 INFO L225 Difference]: With dead ends: 376 [2025-02-06 14:36:59,472 INFO L226 Difference]: Without dead ends: 375 [2025-02-06 14:36:59,472 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2025-02-06 14:36:59,473 INFO L435 NwaCegarLoop]: 174 mSDtfsCounter, 182 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 1078 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-06 14:36:59,473 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 1078 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-06 14:36:59,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2025-02-06 14:36:59,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 271. [2025-02-06 14:36:59,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 161 states have (on average 1.670807453416149) internal successors, (269), 263 states have internal predecessors, (269), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2025-02-06 14:36:59,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 280 transitions. [2025-02-06 14:36:59,479 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 280 transitions. Word has length 42 [2025-02-06 14:36:59,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:36:59,479 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 280 transitions. [2025-02-06 14:36:59,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 6.833333333333333) internal successors, (41), 7 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 14:36:59,480 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 280 transitions. [2025-02-06 14:36:59,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-02-06 14:36:59,480 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:36:59,480 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:36:59,486 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 [2025-02-06 14:36:59,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2025-02-06 14:36:59,684 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_25_to_33_0Err18ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2025-02-06 14:36:59,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:36:59,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1192655254, now seen corresponding path program 1 times [2025-02-06 14:36:59,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:36:59,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870077219] [2025-02-06 14:36:59,685 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:36:59,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:36:59,693 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-02-06 14:36:59,700 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-02-06 14:36:59,700 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:36:59,700 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-06 14:36:59,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1275334745] [2025-02-06 14:36:59,700 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:36:59,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:36:59,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:36:59,702 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) [2025-02-06 14:36:59,704 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 [2025-02-06 14:36:59,749 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-02-06 14:36:59,767 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-02-06 14:36:59,767 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:36:59,767 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:36:59,768 INFO L256 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-02-06 14:36:59,770 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:36:59,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-06 14:36:59,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 14:36:59,973 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 14:36:59,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:36:59,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870077219] [2025-02-06 14:36:59,973 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-06 14:36:59,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275334745] [2025-02-06 14:36:59,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275334745] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:36:59,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:36:59,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 14:36:59,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137797105] [2025-02-06 14:36:59,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:36:59,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 14:36:59,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:36:59,973 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 14:36:59,973 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-02-06 14:36:59,974 INFO L87 Difference]: Start difference. First operand 271 states and 280 transitions. Second operand has 8 states, 6 states have (on average 7.0) internal successors, (42), 7 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 14:37:00,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:37:00,573 INFO L93 Difference]: Finished difference Result 375 states and 380 transitions. [2025-02-06 14:37:00,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 14:37:00,573 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 7.0) internal successors, (42), 7 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2025-02-06 14:37:00,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:37:00,575 INFO L225 Difference]: With dead ends: 375 [2025-02-06 14:37:00,575 INFO L226 Difference]: Without dead ends: 374 [2025-02-06 14:37:00,575 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2025-02-06 14:37:00,575 INFO L435 NwaCegarLoop]: 174 mSDtfsCounter, 191 mSDsluCounter, 782 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 956 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-06 14:37:00,575 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 956 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-06 14:37:00,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2025-02-06 14:37:00,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 271. [2025-02-06 14:37:00,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 161 states have (on average 1.6645962732919255) internal successors, (268), 263 states have internal predecessors, (268), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2025-02-06 14:37:00,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 279 transitions. [2025-02-06 14:37:00,583 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 279 transitions. Word has length 43 [2025-02-06 14:37:00,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:37:00,583 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 279 transitions. [2025-02-06 14:37:00,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 7.0) internal successors, (42), 7 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 14:37:00,583 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 279 transitions. [2025-02-06 14:37:00,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2025-02-06 14:37:00,584 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:37:00,584 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:37:00,590 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 [2025-02-06 14:37:00,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:37:00,784 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_25_to_33_0Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2025-02-06 14:37:00,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:37:00,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1682392801, now seen corresponding path program 1 times [2025-02-06 14:37:00,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:37:00,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522986491] [2025-02-06 14:37:00,785 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:37:00,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:37:00,794 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-02-06 14:37:00,799 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-02-06 14:37:00,799 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:37:00,799 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:37:00,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 14:37:00,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:37:00,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522986491] [2025-02-06 14:37:00,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522986491] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:37:00,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:37:00,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 14:37:00,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405947034] [2025-02-06 14:37:00,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:37:00,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 14:37:00,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:37:00,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 14:37:00,987 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 14:37:00,987 INFO L87 Difference]: Start difference. First operand 271 states and 279 transitions. Second operand has 6 states, 4 states have (on average 10.75) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 14:37:01,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:37:01,048 INFO L93 Difference]: Finished difference Result 380 states and 384 transitions. [2025-02-06 14:37:01,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 14:37:01,048 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 10.75) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2025-02-06 14:37:01,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:37:01,049 INFO L225 Difference]: With dead ends: 380 [2025-02-06 14:37:01,050 INFO L226 Difference]: Without dead ends: 378 [2025-02-06 14:37:01,050 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 [2025-02-06 14:37:01,051 INFO L435 NwaCegarLoop]: 212 mSDtfsCounter, 195 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 1058 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 14:37:01,051 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 1058 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 14:37:01,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2025-02-06 14:37:01,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 271. [2025-02-06 14:37:01,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 161 states have (on average 1.6521739130434783) internal successors, (266), 263 states have internal predecessors, (266), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2025-02-06 14:37:01,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 277 transitions. [2025-02-06 14:37:01,058 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 277 transitions. Word has length 44 [2025-02-06 14:37:01,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:37:01,058 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 277 transitions. [2025-02-06 14:37:01,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 10.75) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 14:37:01,059 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 277 transitions. [2025-02-06 14:37:01,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2025-02-06 14:37:01,061 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:37:01,061 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:37:01,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-06 14:37:01,062 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_25_to_33_0Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2025-02-06 14:37:01,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:37:01,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1871778751, now seen corresponding path program 1 times [2025-02-06 14:37:01,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:37:01,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977360904] [2025-02-06 14:37:01,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:37:01,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:37:01,070 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-02-06 14:37:01,075 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-02-06 14:37:01,077 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:37:01,077 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:37:01,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 14:37:01,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:37:01,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977360904] [2025-02-06 14:37:01,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977360904] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:37:01,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:37:01,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 14:37:01,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003258248] [2025-02-06 14:37:01,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:37:01,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 14:37:01,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:37:01,212 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 14:37:01,212 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-06 14:37:01,212 INFO L87 Difference]: Start difference. First operand 271 states and 277 transitions. Second operand has 7 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 14:37:01,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:37:01,641 INFO L93 Difference]: Finished difference Result 378 states and 382 transitions. [2025-02-06 14:37:01,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 14:37:01,641 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2025-02-06 14:37:01,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:37:01,642 INFO L225 Difference]: With dead ends: 378 [2025-02-06 14:37:01,642 INFO L226 Difference]: Without dead ends: 377 [2025-02-06 14:37:01,643 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-02-06 14:37:01,643 INFO L435 NwaCegarLoop]: 213 mSDtfsCounter, 196 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-06 14:37:01,643 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 1013 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-06 14:37:01,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2025-02-06 14:37:01,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 271. [2025-02-06 14:37:01,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 161 states have (on average 1.6459627329192548) internal successors, (265), 263 states have internal predecessors, (265), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2025-02-06 14:37:01,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 276 transitions. [2025-02-06 14:37:01,649 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 276 transitions. Word has length 46 [2025-02-06 14:37:01,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:37:01,649 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 276 transitions. [2025-02-06 14:37:01,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 14:37:01,649 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 276 transitions. [2025-02-06 14:37:01,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2025-02-06 14:37:01,649 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:37:01,649 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:37:01,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-02-06 14:37:01,650 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting func_to_recursive_line_25_to_33_0Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2025-02-06 14:37:01,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:37:01,650 INFO L85 PathProgramCache]: Analyzing trace with hash -2104400858, now seen corresponding path program 1 times [2025-02-06 14:37:01,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:37:01,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356749670] [2025-02-06 14:37:01,650 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:37:01,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:37:01,656 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 47 statements into 1 equivalence classes. [2025-02-06 14:37:01,660 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-02-06 14:37:01,661 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:37:01,661 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:37:01,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 14:37:01,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:37:01,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356749670] [2025-02-06 14:37:01,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356749670] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:37:01,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:37:01,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 14:37:01,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160899904] [2025-02-06 14:37:01,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:37:01,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 14:37:01,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:37:01,801 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 14:37:01,802 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 14:37:01,802 INFO L87 Difference]: Start difference. First operand 271 states and 276 transitions. Second operand has 6 states, 4 states have (on average 11.5) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 14:37:02,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:37:02,218 INFO L93 Difference]: Finished difference Result 377 states and 381 transitions. [2025-02-06 14:37:02,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 14:37:02,219 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 11.5) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2025-02-06 14:37:02,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:37:02,220 INFO L225 Difference]: With dead ends: 377 [2025-02-06 14:37:02,220 INFO L226 Difference]: Without dead ends: 376 [2025-02-06 14:37:02,220 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 [2025-02-06 14:37:02,220 INFO L435 NwaCegarLoop]: 214 mSDtfsCounter, 188 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-06 14:37:02,220 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 986 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-06 14:37:02,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2025-02-06 14:37:02,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 271. [2025-02-06 14:37:02,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 161 states have (on average 1.639751552795031) internal successors, (264), 263 states have internal predecessors, (264), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2025-02-06 14:37:02,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 275 transitions. [2025-02-06 14:37:02,225 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 275 transitions. Word has length 47 [2025-02-06 14:37:02,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:37:02,226 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 275 transitions. [2025-02-06 14:37:02,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 11.5) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 14:37:02,226 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 275 transitions. [2025-02-06 14:37:02,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2025-02-06 14:37:02,226 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:37:02,226 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:37:02,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-06 14:37:02,226 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting func_to_recursive_line_25_to_33_0Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2025-02-06 14:37:02,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:37:02,227 INFO L85 PathProgramCache]: Analyzing trace with hash 938527412, now seen corresponding path program 1 times [2025-02-06 14:37:02,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:37:02,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167480246] [2025-02-06 14:37:02,227 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:37:02,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:37:02,234 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-02-06 14:37:02,239 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-02-06 14:37:02,240 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:37:02,240 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:37:02,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 14:37:02,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:37:02,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167480246] [2025-02-06 14:37:02,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167480246] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:37:02,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:37:02,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 14:37:02,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254054887] [2025-02-06 14:37:02,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:37:02,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 14:37:02,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:37:02,392 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 14:37:02,392 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-06 14:37:02,392 INFO L87 Difference]: Start difference. First operand 271 states and 275 transitions. Second operand has 7 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 14:37:02,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:37:02,457 INFO L93 Difference]: Finished difference Result 370 states and 374 transitions. [2025-02-06 14:37:02,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 14:37:02,457 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2025-02-06 14:37:02,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:37:02,458 INFO L225 Difference]: With dead ends: 370 [2025-02-06 14:37:02,458 INFO L226 Difference]: Without dead ends: 369 [2025-02-06 14:37:02,459 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2025-02-06 14:37:02,459 INFO L435 NwaCegarLoop]: 216 mSDtfsCounter, 149 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 1279 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 14:37:02,459 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 1279 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 14:37:02,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2025-02-06 14:37:02,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 272. [2025-02-06 14:37:02,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 162 states have (on average 1.6358024691358024) internal successors, (265), 264 states have internal predecessors, (265), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2025-02-06 14:37:02,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 276 transitions. [2025-02-06 14:37:02,464 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 276 transitions. Word has length 55 [2025-02-06 14:37:02,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:37:02,465 INFO L471 AbstractCegarLoop]: Abstraction has 272 states and 276 transitions. [2025-02-06 14:37:02,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 14:37:02,465 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 276 transitions. [2025-02-06 14:37:02,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-02-06 14:37:02,465 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:37:02,465 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:37:02,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-02-06 14:37:02,466 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting func_to_recursive_line_25_to_33_0Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2025-02-06 14:37:02,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:37:02,466 INFO L85 PathProgramCache]: Analyzing trace with hash -970421305, now seen corresponding path program 1 times [2025-02-06 14:37:02,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:37:02,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487948404] [2025-02-06 14:37:02,466 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:37:02,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:37:02,473 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-02-06 14:37:02,478 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-02-06 14:37:02,478 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:37:02,478 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:37:02,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 14:37:02,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:37:02,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487948404] [2025-02-06 14:37:02,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487948404] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:37:02,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:37:02,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 14:37:02,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988075050] [2025-02-06 14:37:02,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:37:02,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 14:37:02,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:37:02,627 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 14:37:02,628 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-06 14:37:02,628 INFO L87 Difference]: Start difference. First operand 272 states and 276 transitions. Second operand has 7 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 14:37:02,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:37:02,690 INFO L93 Difference]: Finished difference Result 272 states and 276 transitions. [2025-02-06 14:37:02,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 14:37:02,690 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2025-02-06 14:37:02,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:37:02,692 INFO L225 Difference]: With dead ends: 272 [2025-02-06 14:37:02,692 INFO L226 Difference]: Without dead ends: 271 [2025-02-06 14:37:02,692 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-02-06 14:37:02,693 INFO L435 NwaCegarLoop]: 213 mSDtfsCounter, 275 mSDsluCounter, 736 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 949 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 14:37:02,693 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 949 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 14:37:02,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2025-02-06 14:37:02,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2025-02-06 14:37:02,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 162 states have (on average 1.6296296296296295) internal successors, (264), 263 states have internal predecessors, (264), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2025-02-06 14:37:02,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 275 transitions. [2025-02-06 14:37:02,698 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 275 transitions. Word has length 56 [2025-02-06 14:37:02,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:37:02,698 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 275 transitions. [2025-02-06 14:37:02,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 14:37:02,698 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 275 transitions. [2025-02-06 14:37:02,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2025-02-06 14:37:02,698 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:37:02,699 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:37:02,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-02-06 14:37:02,699 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting func_to_recursive_line_25_to_33_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2025-02-06 14:37:02,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:37:02,699 INFO L85 PathProgramCache]: Analyzing trace with hash -18289390, now seen corresponding path program 1 times [2025-02-06 14:37:02,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:37:02,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354574961] [2025-02-06 14:37:02,699 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:37:02,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:37:02,706 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 57 statements into 1 equivalence classes. [2025-02-06 14:37:02,710 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 57 of 57 statements. [2025-02-06 14:37:02,710 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:37:02,711 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:37:02,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 14:37:02,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:37:02,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354574961] [2025-02-06 14:37:02,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354574961] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:37:02,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:37:02,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 14:37:02,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309848609] [2025-02-06 14:37:02,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:37:02,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 14:37:02,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:37:02,837 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 14:37:02,837 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 14:37:02,837 INFO L87 Difference]: Start difference. First operand 271 states and 275 transitions. Second operand has 6 states, 4 states have (on average 13.5) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 14:37:02,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:37:02,969 INFO L93 Difference]: Finished difference Result 367 states and 372 transitions. [2025-02-06 14:37:02,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 14:37:02,970 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 13.5) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2025-02-06 14:37:02,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:37:02,971 INFO L225 Difference]: With dead ends: 367 [2025-02-06 14:37:02,971 INFO L226 Difference]: Without dead ends: 365 [2025-02-06 14:37:02,971 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 [2025-02-06 14:37:02,971 INFO L435 NwaCegarLoop]: 184 mSDtfsCounter, 145 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 14:37:02,971 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 895 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 14:37:02,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2025-02-06 14:37:02,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 274. [2025-02-06 14:37:02,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 165 states have (on average 1.6181818181818182) internal successors, (267), 266 states have internal predecessors, (267), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2025-02-06 14:37:02,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 278 transitions. [2025-02-06 14:37:02,979 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 278 transitions. Word has length 57 [2025-02-06 14:37:02,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:37:02,979 INFO L471 AbstractCegarLoop]: Abstraction has 274 states and 278 transitions. [2025-02-06 14:37:02,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 13.5) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 14:37:02,980 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 278 transitions. [2025-02-06 14:37:02,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-02-06 14:37:02,981 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:37:02,981 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:37:02,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-02-06 14:37:02,981 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr45ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2025-02-06 14:37:02,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:37:02,981 INFO L85 PathProgramCache]: Analyzing trace with hash -565773091, now seen corresponding path program 1 times [2025-02-06 14:37:02,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:37:02,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493243294] [2025-02-06 14:37:02,981 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:37:02,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:37:02,988 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-02-06 14:37:02,995 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-02-06 14:37:02,996 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:37:02,996 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:37:03,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 14:37:03,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:37:03,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493243294] [2025-02-06 14:37:03,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493243294] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:37:03,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:37:03,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 14:37:03,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519873943] [2025-02-06 14:37:03,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:37:03,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 14:37:03,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:37:03,103 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 14:37:03,103 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 14:37:03,103 INFO L87 Difference]: Start difference. First operand 274 states and 278 transitions. Second operand has 5 states, 4 states have (on average 13.5) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 14:37:03,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:37:03,356 INFO L93 Difference]: Finished difference Result 367 states and 372 transitions. [2025-02-06 14:37:03,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 14:37:03,356 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.5) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 58 [2025-02-06 14:37:03,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:37:03,357 INFO L225 Difference]: With dead ends: 367 [2025-02-06 14:37:03,357 INFO L226 Difference]: Without dead ends: 355 [2025-02-06 14:37:03,357 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 14:37:03,358 INFO L435 NwaCegarLoop]: 161 mSDtfsCounter, 193 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 14:37:03,358 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 563 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 14:37:03,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2025-02-06 14:37:03,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 289. [2025-02-06 14:37:03,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 179 states have (on average 1.5698324022346368) internal successors, (281), 279 states have internal predecessors, (281), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2025-02-06 14:37:03,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 293 transitions. [2025-02-06 14:37:03,366 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 293 transitions. Word has length 58 [2025-02-06 14:37:03,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:37:03,366 INFO L471 AbstractCegarLoop]: Abstraction has 289 states and 293 transitions. [2025-02-06 14:37:03,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.5) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 14:37:03,366 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 293 transitions. [2025-02-06 14:37:03,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-02-06 14:37:03,369 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:37:03,369 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:37:03,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-02-06 14:37:03,369 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting func_to_recursive_line_25_to_33_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2025-02-06 14:37:03,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:37:03,369 INFO L85 PathProgramCache]: Analyzing trace with hash -396234896, now seen corresponding path program 1 times [2025-02-06 14:37:03,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:37:03,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661005738] [2025-02-06 14:37:03,369 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:37:03,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:37:03,379 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-02-06 14:37:03,391 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-02-06 14:37:03,392 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:37:03,392 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-06 14:37:03,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1258757403] [2025-02-06 14:37:03,393 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:37:03,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:37:03,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:37:03,395 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) [2025-02-06 14:37:03,397 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 [2025-02-06 14:37:03,452 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-02-06 14:37:03,477 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-02-06 14:37:03,477 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:37:03,477 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:37:03,478 INFO L256 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-02-06 14:37:03,480 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:37:03,490 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 [2025-02-06 14:37:03,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2025-02-06 14:37:03,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 14:37:03,608 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 14:37:03,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:37:03,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661005738] [2025-02-06 14:37:03,609 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-06 14:37:03,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258757403] [2025-02-06 14:37:03,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258757403] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:37:03,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:37:03,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 14:37:03,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834171067] [2025-02-06 14:37:03,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:37:03,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 14:37:03,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:37:03,609 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 14:37:03,609 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-06 14:37:03,609 INFO L87 Difference]: Start difference. First operand 289 states and 293 transitions. Second operand has 8 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 14:37:03,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:37:03,842 INFO L93 Difference]: Finished difference Result 357 states and 363 transitions. [2025-02-06 14:37:03,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 14:37:03,842 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2025-02-06 14:37:03,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:37:03,844 INFO L225 Difference]: With dead ends: 357 [2025-02-06 14:37:03,844 INFO L226 Difference]: Without dead ends: 355 [2025-02-06 14:37:03,844 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2025-02-06 14:37:03,844 INFO L435 NwaCegarLoop]: 159 mSDtfsCounter, 443 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 14:37:03,844 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 784 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 14:37:03,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2025-02-06 14:37:03,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 287. [2025-02-06 14:37:03,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 179 states have (on average 1.558659217877095) internal successors, (279), 277 states have internal predecessors, (279), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2025-02-06 14:37:03,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 291 transitions. [2025-02-06 14:37:03,850 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 291 transitions. Word has length 59 [2025-02-06 14:37:03,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:37:03,850 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 291 transitions. [2025-02-06 14:37:03,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 14:37:03,850 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 291 transitions. [2025-02-06 14:37:03,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-02-06 14:37:03,851 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:37:03,851 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:37:03,857 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 [2025-02-06 14:37:04,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-02-06 14:37:04,055 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting func_to_recursive_line_25_to_33_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2025-02-06 14:37:04,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:37:04,055 INFO L85 PathProgramCache]: Analyzing trace with hash 601620099, now seen corresponding path program 1 times [2025-02-06 14:37:04,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:37:04,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474524728] [2025-02-06 14:37:04,055 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:37:04,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:37:04,062 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-02-06 14:37:04,071 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-02-06 14:37:04,071 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:37:04,071 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-06 14:37:04,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [152759322] [2025-02-06 14:37:04,072 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:37:04,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:37:04,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:37:04,076 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) [2025-02-06 14:37:04,077 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 [2025-02-06 14:37:04,130 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-02-06 14:37:04,155 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-02-06 14:37:04,155 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:37:04,155 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:37:04,157 INFO L256 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-06 14:37:04,159 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:37:04,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-06 14:37:04,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 14:37:04,268 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 14:37:04,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:37:04,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474524728] [2025-02-06 14:37:04,269 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-06 14:37:04,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152759322] [2025-02-06 14:37:04,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152759322] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:37:04,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:37:04,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 14:37:04,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898110235] [2025-02-06 14:37:04,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:37:04,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 14:37:04,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:37:04,269 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 14:37:04,269 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-06 14:37:04,270 INFO L87 Difference]: Start difference. First operand 287 states and 291 transitions. Second operand has 8 states, 6 states have (on average 9.5) internal successors, (57), 7 states have internal predecessors, (57), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 14:37:04,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:37:04,507 INFO L93 Difference]: Finished difference Result 372 states and 383 transitions. [2025-02-06 14:37:04,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 14:37:04,508 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 9.5) internal successors, (57), 7 states have internal predecessors, (57), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 60 [2025-02-06 14:37:04,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:37:04,509 INFO L225 Difference]: With dead ends: 372 [2025-02-06 14:37:04,509 INFO L226 Difference]: Without dead ends: 371 [2025-02-06 14:37:04,509 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-02-06 14:37:04,510 INFO L435 NwaCegarLoop]: 162 mSDtfsCounter, 220 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 14:37:04,510 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 909 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 14:37:04,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2025-02-06 14:37:04,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 324. [2025-02-06 14:37:04,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 214 states have (on average 1.6074766355140186) internal successors, (344), 313 states have internal predecessors, (344), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2025-02-06 14:37:04,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 358 transitions. [2025-02-06 14:37:04,518 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 358 transitions. Word has length 60 [2025-02-06 14:37:04,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:37:04,519 INFO L471 AbstractCegarLoop]: Abstraction has 324 states and 358 transitions. [2025-02-06 14:37:04,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 9.5) internal successors, (57), 7 states have internal predecessors, (57), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 14:37:04,519 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 358 transitions. [2025-02-06 14:37:04,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-02-06 14:37:04,519 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:37:04,519 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:37:04,526 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-06 14:37:04,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:37:04,720 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting func_to_recursive_line_25_to_33_0Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2025-02-06 14:37:04,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:37:04,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1470353870, now seen corresponding path program 1 times [2025-02-06 14:37:04,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:37:04,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490937767] [2025-02-06 14:37:04,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:37:04,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:37:04,739 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-02-06 14:37:04,748 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-02-06 14:37:04,748 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:37:04,748 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-06 14:37:04,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1965308976] [2025-02-06 14:37:04,749 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:37:04,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:37:04,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:37:04,751 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) [2025-02-06 14:37:04,752 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 [2025-02-06 14:37:04,803 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-02-06 14:37:04,829 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-02-06 14:37:04,829 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:37:04,829 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:37:04,833 INFO L256 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-06 14:37:04,835 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:37:04,839 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 [2025-02-06 14:37:04,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-02-06 14:37:04,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2025-02-06 14:37:04,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 14:37:04,987 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 14:37:04,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:37:04,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490937767] [2025-02-06 14:37:04,987 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-06 14:37:04,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965308976] [2025-02-06 14:37:04,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965308976] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:37:04,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:37:04,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 14:37:04,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745689441] [2025-02-06 14:37:04,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:37:04,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 14:37:04,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:37:04,988 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 14:37:04,988 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-02-06 14:37:04,988 INFO L87 Difference]: Start difference. First operand 324 states and 358 transitions. Second operand has 9 states, 7 states have (on average 8.285714285714286) internal successors, (58), 8 states have internal predecessors, (58), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 14:37:05,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:37:05,303 INFO L93 Difference]: Finished difference Result 361 states and 366 transitions. [2025-02-06 14:37:05,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 14:37:05,303 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 8.285714285714286) internal successors, (58), 8 states have internal predecessors, (58), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2025-02-06 14:37:05,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:37:05,304 INFO L225 Difference]: With dead ends: 361 [2025-02-06 14:37:05,304 INFO L226 Difference]: Without dead ends: 360 [2025-02-06 14:37:05,305 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2025-02-06 14:37:05,305 INFO L435 NwaCegarLoop]: 159 mSDtfsCounter, 360 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 939 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 14:37:05,305 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 939 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 14:37:05,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2025-02-06 14:37:05,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 323. [2025-02-06 14:37:05,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 214 states have (on average 1.602803738317757) internal successors, (343), 312 states have internal predecessors, (343), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2025-02-06 14:37:05,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 357 transitions. [2025-02-06 14:37:05,318 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 357 transitions. Word has length 61 [2025-02-06 14:37:05,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:37:05,319 INFO L471 AbstractCegarLoop]: Abstraction has 323 states and 357 transitions. [2025-02-06 14:37:05,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 8.285714285714286) internal successors, (58), 8 states have internal predecessors, (58), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 14:37:05,319 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 357 transitions. [2025-02-06 14:37:05,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-02-06 14:37:05,319 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:37:05,319 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:37:05,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-02-06 14:37:05,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:37:05,524 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting func_to_recursive_line_25_to_33_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2025-02-06 14:37:05,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:37:05,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1663670303, now seen corresponding path program 1 times [2025-02-06 14:37:05,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:37:05,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480242231] [2025-02-06 14:37:05,524 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:37:05,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:37:05,535 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-02-06 14:37:05,546 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-02-06 14:37:05,549 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:37:05,549 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-06 14:37:05,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2039433302] [2025-02-06 14:37:05,550 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:37:05,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:37:05,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:37:05,552 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) [2025-02-06 14:37:05,554 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 [2025-02-06 14:37:05,619 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-02-06 14:37:05,651 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-02-06 14:37:05,651 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:37:05,651 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:37:05,652 INFO L256 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-02-06 14:37:05,654 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:37:05,660 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 [2025-02-06 14:37:05,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 14:37:05,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 14:37:05,794 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 14:37:05,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:37:05,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480242231] [2025-02-06 14:37:05,794 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-06 14:37:05,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039433302] [2025-02-06 14:37:05,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039433302] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:37:05,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:37:05,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 14:37:05,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150313080] [2025-02-06 14:37:05,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:37:05,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 14:37:05,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:37:05,795 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 14:37:05,795 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-02-06 14:37:05,795 INFO L87 Difference]: Start difference. First operand 323 states and 357 transitions. Second operand has 9 states, 7 states have (on average 8.428571428571429) internal successors, (59), 8 states have internal predecessors, (59), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 14:37:06,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:37:06,071 INFO L93 Difference]: Finished difference Result 371 states and 380 transitions. [2025-02-06 14:37:06,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 14:37:06,071 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 8.428571428571429) internal successors, (59), 8 states have internal predecessors, (59), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2025-02-06 14:37:06,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:37:06,072 INFO L225 Difference]: With dead ends: 371 [2025-02-06 14:37:06,072 INFO L226 Difference]: Without dead ends: 370 [2025-02-06 14:37:06,073 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2025-02-06 14:37:06,073 INFO L435 NwaCegarLoop]: 163 mSDtfsCounter, 148 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 1160 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 14:37:06,073 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 1160 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 14:37:06,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2025-02-06 14:37:06,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 325. [2025-02-06 14:37:06,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 216 states have (on average 1.5972222222222223) internal successors, (345), 314 states have internal predecessors, (345), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2025-02-06 14:37:06,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 359 transitions. [2025-02-06 14:37:06,080 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 359 transitions. Word has length 62 [2025-02-06 14:37:06,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:37:06,080 INFO L471 AbstractCegarLoop]: Abstraction has 325 states and 359 transitions. [2025-02-06 14:37:06,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 8.428571428571429) internal successors, (59), 8 states have internal predecessors, (59), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 14:37:06,080 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 359 transitions. [2025-02-06 14:37:06,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-02-06 14:37:06,081 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:37:06,081 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:37:06,087 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-06 14:37:06,285 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,SelfDestructingSolverStorable20 [2025-02-06 14:37:06,285 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting func_to_recursive_line_25_to_33_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2025-02-06 14:37:06,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:37:06,285 INFO L85 PathProgramCache]: Analyzing trace with hash -34171860, now seen corresponding path program 1 times [2025-02-06 14:37:06,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:37:06,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160422934] [2025-02-06 14:37:06,285 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:37:06,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:37:06,293 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-02-06 14:37:06,299 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-02-06 14:37:06,300 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:37:06,300 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-06 14:37:06,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [85956867] [2025-02-06 14:37:06,301 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:37:06,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:37:06,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:37:06,303 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) [2025-02-06 14:37:06,304 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 [2025-02-06 14:37:06,360 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-02-06 14:37:06,385 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-02-06 14:37:06,385 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:37:06,385 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:37:06,386 INFO L256 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-02-06 14:37:06,387 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:37:06,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-06 14:37:06,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-02-06 14:37:06,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16 [2025-02-06 14:37:06,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 14:37:06,549 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 14:37:06,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:37:06,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160422934] [2025-02-06 14:37:06,549 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-06 14:37:06,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85956867] [2025-02-06 14:37:06,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85956867] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:37:06,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:37:06,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-06 14:37:06,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670913578] [2025-02-06 14:37:06,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:37:06,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 14:37:06,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:37:06,550 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 14:37:06,550 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-02-06 14:37:06,550 INFO L87 Difference]: Start difference. First operand 325 states and 359 transitions. Second operand has 10 states, 8 states have (on average 7.5) internal successors, (60), 9 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 14:37:06,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:37:06,796 INFO L93 Difference]: Finished difference Result 362 states and 367 transitions. [2025-02-06 14:37:06,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 14:37:06,797 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 7.5) internal successors, (60), 9 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 63 [2025-02-06 14:37:06,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:37:06,799 INFO L225 Difference]: With dead ends: 362 [2025-02-06 14:37:06,799 INFO L226 Difference]: Without dead ends: 361 [2025-02-06 14:37:06,799 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2025-02-06 14:37:06,800 INFO L435 NwaCegarLoop]: 159 mSDtfsCounter, 439 mSDsluCounter, 779 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 938 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 14:37:06,800 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 938 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 14:37:06,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2025-02-06 14:37:06,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 324. [2025-02-06 14:37:06,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 216 states have (on average 1.5925925925925926) internal successors, (344), 313 states have internal predecessors, (344), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2025-02-06 14:37:06,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 358 transitions. [2025-02-06 14:37:06,808 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 358 transitions. Word has length 63 [2025-02-06 14:37:06,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:37:06,808 INFO L471 AbstractCegarLoop]: Abstraction has 324 states and 358 transitions. [2025-02-06 14:37:06,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 7.5) internal successors, (60), 9 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 14:37:06,808 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 358 transitions. [2025-02-06 14:37:06,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-02-06 14:37:06,808 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:37:06,808 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:37:06,815 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-06 14:37:07,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:37:07,009 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting func_to_recursive_line_25_to_33_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2025-02-06 14:37:07,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:37:07,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1059327681, now seen corresponding path program 1 times [2025-02-06 14:37:07,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:37:07,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844407597] [2025-02-06 14:37:07,009 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:37:07,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:37:07,017 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-02-06 14:37:07,023 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-02-06 14:37:07,024 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:37:07,024 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-06 14:37:07,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1619176088] [2025-02-06 14:37:07,025 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:37:07,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:37:07,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:37:07,026 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) [2025-02-06 14:37:07,028 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 [2025-02-06 14:37:07,087 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-02-06 14:37:07,116 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-02-06 14:37:07,117 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:37:07,117 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:37:07,118 INFO L256 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-02-06 14:37:07,119 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:37:07,122 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 [2025-02-06 14:37:07,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 14:37:07,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 14:37:07,269 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 14:37:07,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:37:07,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844407597] [2025-02-06 14:37:07,270 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-06 14:37:07,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619176088] [2025-02-06 14:37:07,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619176088] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:37:07,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:37:07,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-06 14:37:07,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572496678] [2025-02-06 14:37:07,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:37:07,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 14:37:07,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:37:07,271 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 14:37:07,271 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-02-06 14:37:07,271 INFO L87 Difference]: Start difference. First operand 324 states and 358 transitions. Second operand has 10 states, 8 states have (on average 7.625) internal successors, (61), 9 states have internal predecessors, (61), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 14:37:07,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:37:07,519 INFO L93 Difference]: Finished difference Result 370 states and 377 transitions. [2025-02-06 14:37:07,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 14:37:07,519 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 7.625) internal successors, (61), 9 states have internal predecessors, (61), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2025-02-06 14:37:07,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:37:07,520 INFO L225 Difference]: With dead ends: 370 [2025-02-06 14:37:07,520 INFO L226 Difference]: Without dead ends: 369 [2025-02-06 14:37:07,521 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2025-02-06 14:37:07,521 INFO L435 NwaCegarLoop]: 164 mSDtfsCounter, 150 mSDsluCounter, 1001 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 1165 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 14:37:07,521 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 1165 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 14:37:07,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2025-02-06 14:37:07,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 326. [2025-02-06 14:37:07,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 218 states have (on average 1.5871559633027523) internal successors, (346), 315 states have internal predecessors, (346), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2025-02-06 14:37:07,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 360 transitions. [2025-02-06 14:37:07,528 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 360 transitions. Word has length 64 [2025-02-06 14:37:07,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:37:07,528 INFO L471 AbstractCegarLoop]: Abstraction has 326 states and 360 transitions. [2025-02-06 14:37:07,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 7.625) internal successors, (61), 9 states have internal predecessors, (61), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 14:37:07,528 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 360 transitions. [2025-02-06 14:37:07,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-02-06 14:37:07,528 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:37:07,530 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:37:07,537 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-02-06 14:37:07,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:37:07,731 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting func_to_recursive_line_25_to_33_0Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2025-02-06 14:37:07,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:37:07,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1520580234, now seen corresponding path program 1 times [2025-02-06 14:37:07,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:37:07,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373027709] [2025-02-06 14:37:07,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:37:07,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:37:07,738 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-02-06 14:37:07,746 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-02-06 14:37:07,746 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:37:07,746 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-06 14:37:07,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1066823388] [2025-02-06 14:37:07,747 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:37:07,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:37:07,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:37:07,749 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) [2025-02-06 14:37:07,751 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 [2025-02-06 14:37:07,810 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-02-06 14:37:07,838 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-02-06 14:37:07,838 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:37:07,838 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:37:07,839 INFO L256 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-02-06 14:37:07,841 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:37:07,850 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 [2025-02-06 14:37:07,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-02-06 14:37:08,017 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 43 treesize of output 19 [2025-02-06 14:37:08,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 14:37:08,033 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 14:37:08,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:37:08,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373027709] [2025-02-06 14:37:08,033 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-06 14:37:08,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066823388] [2025-02-06 14:37:08,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066823388] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:37:08,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:37:08,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-06 14:37:08,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719806605] [2025-02-06 14:37:08,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:37:08,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 14:37:08,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:37:08,034 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 14:37:08,034 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2025-02-06 14:37:08,034 INFO L87 Difference]: Start difference. First operand 326 states and 360 transitions. Second operand has 11 states, 9 states have (on average 6.888888888888889) internal successors, (62), 10 states have internal predecessors, (62), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 14:37:08,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:37:08,284 INFO L93 Difference]: Finished difference Result 363 states and 368 transitions. [2025-02-06 14:37:08,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-06 14:37:08,285 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 6.888888888888889) internal successors, (62), 10 states have internal predecessors, (62), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 65 [2025-02-06 14:37:08,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:37:08,286 INFO L225 Difference]: With dead ends: 363 [2025-02-06 14:37:08,286 INFO L226 Difference]: Without dead ends: 362 [2025-02-06 14:37:08,286 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2025-02-06 14:37:08,286 INFO L435 NwaCegarLoop]: 159 mSDtfsCounter, 484 mSDsluCounter, 929 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 14:37:08,286 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 1088 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 14:37:08,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2025-02-06 14:37:08,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 325. [2025-02-06 14:37:08,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 218 states have (on average 1.5825688073394495) internal successors, (345), 314 states have internal predecessors, (345), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2025-02-06 14:37:08,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 359 transitions. [2025-02-06 14:37:08,293 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 359 transitions. Word has length 65 [2025-02-06 14:37:08,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:37:08,294 INFO L471 AbstractCegarLoop]: Abstraction has 325 states and 359 transitions. [2025-02-06 14:37:08,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 6.888888888888889) internal successors, (62), 10 states have internal predecessors, (62), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 14:37:08,294 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 359 transitions. [2025-02-06 14:37:08,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-02-06 14:37:08,294 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:37:08,294 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:37:08,301 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-02-06 14:37:08,495 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,SelfDestructingSolverStorable23 [2025-02-06 14:37:08,495 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting func_to_recursive_line_25_to_33_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2025-02-06 14:37:08,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:37:08,496 INFO L85 PathProgramCache]: Analyzing trace with hash -106653027, now seen corresponding path program 1 times [2025-02-06 14:37:08,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:37:08,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205636060] [2025-02-06 14:37:08,496 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:37:08,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:37:08,504 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-02-06 14:37:08,513 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-02-06 14:37:08,513 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:37:08,513 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-06 14:37:08,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1362966050] [2025-02-06 14:37:08,514 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:37:08,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:37:08,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:37:08,517 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) [2025-02-06 14:37:08,518 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 [2025-02-06 14:37:08,579 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-02-06 14:37:08,607 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-02-06 14:37:08,607 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:37:08,607 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:37:08,609 INFO L256 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-02-06 14:37:08,610 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:37:08,613 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 [2025-02-06 14:37:08,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 14:37:08,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 14:37:08,814 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 14:37:08,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:37:08,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205636060] [2025-02-06 14:37:08,815 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-06 14:37:08,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362966050] [2025-02-06 14:37:08,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362966050] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:37:08,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:37:08,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-06 14:37:08,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629033029] [2025-02-06 14:37:08,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:37:08,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 14:37:08,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:37:08,816 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 14:37:08,816 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2025-02-06 14:37:08,816 INFO L87 Difference]: Start difference. First operand 325 states and 359 transitions. Second operand has 11 states, 9 states have (on average 7.0) internal successors, (63), 10 states have internal predecessors, (63), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 14:37:09,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:37:09,046 INFO L93 Difference]: Finished difference Result 369 states and 374 transitions. [2025-02-06 14:37:09,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 14:37:09,046 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 7.0) internal successors, (63), 10 states have internal predecessors, (63), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2025-02-06 14:37:09,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:37:09,047 INFO L225 Difference]: With dead ends: 369 [2025-02-06 14:37:09,047 INFO L226 Difference]: Without dead ends: 368 [2025-02-06 14:37:09,047 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2025-02-06 14:37:09,048 INFO L435 NwaCegarLoop]: 165 mSDtfsCounter, 218 mSDsluCounter, 941 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 1106 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 14:37:09,048 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 1106 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 14:37:09,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2025-02-06 14:37:09,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 327. [2025-02-06 14:37:09,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 220 states have (on average 1.5772727272727274) internal successors, (347), 316 states have internal predecessors, (347), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2025-02-06 14:37:09,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 361 transitions. [2025-02-06 14:37:09,060 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 361 transitions. Word has length 66 [2025-02-06 14:37:09,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:37:09,061 INFO L471 AbstractCegarLoop]: Abstraction has 327 states and 361 transitions. [2025-02-06 14:37:09,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 7.0) internal successors, (63), 10 states have internal predecessors, (63), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 14:37:09,061 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 361 transitions. [2025-02-06 14:37:09,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-02-06 14:37:09,061 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:37:09,061 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:37:09,071 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-02-06 14:37:09,261 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,SelfDestructingSolverStorable24 [2025-02-06 14:37:09,262 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2025-02-06 14:37:09,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:37:09,262 INFO L85 PathProgramCache]: Analyzing trace with hash 988723432, now seen corresponding path program 1 times [2025-02-06 14:37:09,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:37:09,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867935229] [2025-02-06 14:37:09,262 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:37:09,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:37:09,269 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-02-06 14:37:09,273 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-02-06 14:37:09,273 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:37:09,273 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:37:09,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 14:37:09,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:37:09,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867935229] [2025-02-06 14:37:09,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867935229] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:37:09,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:37:09,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 14:37:09,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817909103] [2025-02-06 14:37:09,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:37:09,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 14:37:09,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:37:09,407 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 14:37:09,407 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-06 14:37:09,407 INFO L87 Difference]: Start difference. First operand 327 states and 361 transitions. Second operand has 7 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 14:37:09,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:37:09,540 INFO L93 Difference]: Finished difference Result 357 states and 365 transitions. [2025-02-06 14:37:09,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 14:37:09,540 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 67 [2025-02-06 14:37:09,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:37:09,541 INFO L225 Difference]: With dead ends: 357 [2025-02-06 14:37:09,541 INFO L226 Difference]: Without dead ends: 356 [2025-02-06 14:37:09,541 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-02-06 14:37:09,542 INFO L435 NwaCegarLoop]: 210 mSDtfsCounter, 132 mSDsluCounter, 1013 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 1223 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 14:37:09,542 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 1223 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 14:37:09,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2025-02-06 14:37:09,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 328. [2025-02-06 14:37:09,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 221 states have (on average 1.5746606334841629) internal successors, (348), 317 states have internal predecessors, (348), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2025-02-06 14:37:09,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 362 transitions. [2025-02-06 14:37:09,550 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 362 transitions. Word has length 67 [2025-02-06 14:37:09,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:37:09,551 INFO L471 AbstractCegarLoop]: Abstraction has 328 states and 362 transitions. [2025-02-06 14:37:09,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 14:37:09,551 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 362 transitions. [2025-02-06 14:37:09,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-02-06 14:37:09,551 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:37:09,551 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:37:09,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-02-06 14:37:09,551 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2025-02-06 14:37:09,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:37:09,552 INFO L85 PathProgramCache]: Analyzing trace with hash 585655291, now seen corresponding path program 1 times [2025-02-06 14:37:09,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:37:09,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113747433] [2025-02-06 14:37:09,552 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:37:09,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:37:09,566 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-02-06 14:37:09,572 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-02-06 14:37:09,572 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:37:09,572 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:37:09,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 14:37:09,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:37:09,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113747433] [2025-02-06 14:37:09,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113747433] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:37:09,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:37:09,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 14:37:09,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741733885] [2025-02-06 14:37:09,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:37:09,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 14:37:09,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:37:09,708 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 14:37:09,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 14:37:09,708 INFO L87 Difference]: Start difference. First operand 328 states and 362 transitions. Second operand has 6 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 14:37:09,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:37:09,797 INFO L93 Difference]: Finished difference Result 356 states and 364 transitions. [2025-02-06 14:37:09,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 14:37:09,798 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2025-02-06 14:37:09,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:37:09,799 INFO L225 Difference]: With dead ends: 356 [2025-02-06 14:37:09,799 INFO L226 Difference]: Without dead ends: 355 [2025-02-06 14:37:09,799 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 [2025-02-06 14:37:09,799 INFO L435 NwaCegarLoop]: 211 mSDtfsCounter, 129 mSDsluCounter, 821 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 14:37:09,799 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 1032 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 14:37:09,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2025-02-06 14:37:09,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 329. [2025-02-06 14:37:09,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 222 states have (on average 1.572072072072072) internal successors, (349), 318 states have internal predecessors, (349), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2025-02-06 14:37:09,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 363 transitions. [2025-02-06 14:37:09,806 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 363 transitions. Word has length 68 [2025-02-06 14:37:09,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:37:09,806 INFO L471 AbstractCegarLoop]: Abstraction has 329 states and 363 transitions. [2025-02-06 14:37:09,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 14:37:09,806 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 363 transitions. [2025-02-06 14:37:09,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-02-06 14:37:09,807 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:37:09,807 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:37:09,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2025-02-06 14:37:09,807 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2025-02-06 14:37:09,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:37:09,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1635487313, now seen corresponding path program 1 times [2025-02-06 14:37:09,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:37:09,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957783147] [2025-02-06 14:37:09,807 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:37:09,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:37:09,817 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-02-06 14:37:09,823 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-02-06 14:37:09,823 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:37:09,824 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:37:09,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 14:37:09,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:37:09,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957783147] [2025-02-06 14:37:09,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957783147] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:37:09,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 14:37:09,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 14:37:09,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804041986] [2025-02-06 14:37:09,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:37:09,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 14:37:09,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:37:09,912 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 14:37:09,912 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 14:37:09,912 INFO L87 Difference]: Start difference. First operand 329 states and 363 transitions. Second operand has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 14:37:10,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:37:10,140 INFO L93 Difference]: Finished difference Result 364 states and 368 transitions. [2025-02-06 14:37:10,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 14:37:10,140 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 70 [2025-02-06 14:37:10,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:37:10,141 INFO L225 Difference]: With dead ends: 364 [2025-02-06 14:37:10,141 INFO L226 Difference]: Without dead ends: 354 [2025-02-06 14:37:10,142 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 14:37:10,142 INFO L435 NwaCegarLoop]: 156 mSDtfsCounter, 148 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 14:37:10,142 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 542 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 14:37:10,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2025-02-06 14:37:10,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 329. [2025-02-06 14:37:10,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 222 states have (on average 1.527027027027027) internal successors, (339), 318 states have internal predecessors, (339), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2025-02-06 14:37:10,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 353 transitions. [2025-02-06 14:37:10,149 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 353 transitions. Word has length 70 [2025-02-06 14:37:10,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:37:10,150 INFO L471 AbstractCegarLoop]: Abstraction has 329 states and 353 transitions. [2025-02-06 14:37:10,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 14:37:10,150 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 353 transitions. [2025-02-06 14:37:10,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-02-06 14:37:10,150 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:37:10,150 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:37:10,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2025-02-06 14:37:10,150 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting func_to_recursive_line_25_to_33_0Err55ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2025-02-06 14:37:10,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:37:10,151 INFO L85 PathProgramCache]: Analyzing trace with hash -265447799, now seen corresponding path program 1 times [2025-02-06 14:37:10,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:37:10,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151703685] [2025-02-06 14:37:10,151 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:37:10,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:37:10,162 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-02-06 14:37:10,168 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-02-06 14:37:10,168 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:37:10,168 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:37:10,384 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 14:37:10,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:37:10,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151703685] [2025-02-06 14:37:10,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151703685] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:37:10,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934885441] [2025-02-06 14:37:10,385 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:37:10,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:37:10,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:37:10,387 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) [2025-02-06 14:37:10,389 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 [2025-02-06 14:37:10,459 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-02-06 14:37:10,488 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-02-06 14:37:10,488 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:37:10,488 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:37:10,490 INFO L256 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-06 14:37:10,492 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:37:10,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-02-06 14:37:10,624 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 [2025-02-06 14:37:10,633 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 14:37:10,634 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 14:37:10,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934885441] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 14:37:10,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 14:37:10,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 15 [2025-02-06 14:37:10,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936305690] [2025-02-06 14:37:10,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 14:37:10,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 14:37:10,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:37:10,634 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 14:37:10,634 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2025-02-06 14:37:10,634 INFO L87 Difference]: Start difference. First operand 329 states and 353 transitions. Second operand has 9 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 14:37:12,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 14:37:17,162 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] [2025-02-06 14:37:17,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:37:17,189 INFO L93 Difference]: Finished difference Result 332 states and 360 transitions. [2025-02-06 14:37:17,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-06 14:37:17,190 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 72 [2025-02-06 14:37:17,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:37:17,191 INFO L225 Difference]: With dead ends: 332 [2025-02-06 14:37:17,191 INFO L226 Difference]: Without dead ends: 330 [2025-02-06 14:37:17,191 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=519, Unknown=0, NotChecked=0, Total=650 [2025-02-06 14:37:17,191 INFO L435 NwaCegarLoop]: 156 mSDtfsCounter, 457 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 13 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2025-02-06 14:37:17,191 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 671 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 544 Invalid, 2 Unknown, 0 Unchecked, 6.5s Time] [2025-02-06 14:37:17,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2025-02-06 14:37:17,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 327. [2025-02-06 14:37:17,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 222 states have (on average 1.518018018018018) internal successors, (337), 316 states have internal predecessors, (337), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2025-02-06 14:37:17,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 351 transitions. [2025-02-06 14:37:17,198 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 351 transitions. Word has length 72 [2025-02-06 14:37:17,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:37:17,198 INFO L471 AbstractCegarLoop]: Abstraction has 327 states and 351 transitions. [2025-02-06 14:37:17,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 14:37:17,198 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 351 transitions. [2025-02-06 14:37:17,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2025-02-06 14:37:17,198 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:37:17,198 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:37:17,205 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-02-06 14:37:17,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2025-02-06 14:37:17,399 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting func_to_recursive_line_25_to_33_0Err54ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2025-02-06 14:37:17,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:37:17,399 INFO L85 PathProgramCache]: Analyzing trace with hash 361052908, now seen corresponding path program 1 times [2025-02-06 14:37:17,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:37:17,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557311520] [2025-02-06 14:37:17,400 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:37:17,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:37:17,407 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes. [2025-02-06 14:37:17,413 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements. [2025-02-06 14:37:17,413 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:37:17,413 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:37:17,622 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 14:37:17,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:37:17,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557311520] [2025-02-06 14:37:17,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557311520] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:37:17,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403966075] [2025-02-06 14:37:17,623 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:37:17,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:37:17,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:37:17,629 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) [2025-02-06 14:37:17,630 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 [2025-02-06 14:37:17,743 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes. [2025-02-06 14:37:17,770 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements. [2025-02-06 14:37:17,770 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:37:17,770 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:37:17,771 INFO L256 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-06 14:37:17,773 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:37:17,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 15 [2025-02-06 14:37:17,921 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 [2025-02-06 14:37:17,931 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 14:37:17,931 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:37:18,107 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 14:37:18,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403966075] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:37:18,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 14:37:18,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 20 [2025-02-06 14:37:18,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997491570] [2025-02-06 14:37:18,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 14:37:18,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-02-06 14:37:18,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:37:18,108 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-02-06 14:37:18,108 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2025-02-06 14:37:18,108 INFO L87 Difference]: Start difference. First operand 327 states and 351 transitions. Second operand has 21 states, 19 states have (on average 10.526315789473685) internal successors, (200), 17 states have internal predecessors, (200), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 14:37:18,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:37:18,637 INFO L93 Difference]: Finished difference Result 355 states and 363 transitions. [2025-02-06 14:37:18,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-06 14:37:18,637 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 10.526315789473685) internal successors, (200), 17 states have internal predecessors, (200), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 73 [2025-02-06 14:37:18,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:37:18,638 INFO L225 Difference]: With dead ends: 355 [2025-02-06 14:37:18,638 INFO L226 Difference]: Without dead ends: 354 [2025-02-06 14:37:18,639 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 133 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2025-02-06 14:37:18,639 INFO L435 NwaCegarLoop]: 170 mSDtfsCounter, 1104 mSDsluCounter, 935 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1105 SdHoareTripleChecker+Valid, 1105 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-06 14:37:18,639 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1105 Valid, 1105 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 769 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-06 14:37:18,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2025-02-06 14:37:18,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 326. [2025-02-06 14:37:18,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 222 states have (on average 1.5135135135135136) internal successors, (336), 315 states have internal predecessors, (336), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2025-02-06 14:37:18,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 350 transitions. [2025-02-06 14:37:18,646 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 350 transitions. Word has length 73 [2025-02-06 14:37:18,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:37:18,646 INFO L471 AbstractCegarLoop]: Abstraction has 326 states and 350 transitions. [2025-02-06 14:37:18,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 10.526315789473685) internal successors, (200), 17 states have internal predecessors, (200), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 14:37:18,646 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 350 transitions. [2025-02-06 14:37:18,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-02-06 14:37:18,647 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:37:18,647 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:37:18,657 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-02-06 14:37:18,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:37:18,847 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting func_to_recursive_line_25_to_33_0Err53ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2025-02-06 14:37:18,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:37:18,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1692261657, now seen corresponding path program 1 times [2025-02-06 14:37:18,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:37:18,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839846804] [2025-02-06 14:37:18,848 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:37:18,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:37:18,855 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-02-06 14:37:18,868 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-02-06 14:37:18,868 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:37:18,868 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-06 14:37:18,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1874708187] [2025-02-06 14:37:18,869 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:37:18,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:37:18,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:37:18,871 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) [2025-02-06 14:37:18,873 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 [2025-02-06 14:37:18,944 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-02-06 14:37:18,974 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-02-06 14:37:18,974 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:37:18,977 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:37:18,979 INFO L256 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-02-06 14:37:18,980 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:37:18,983 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 [2025-02-06 14:37:19,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 14:37:19,122 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 14:37:19,122 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:37:20,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:37:20,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839846804] [2025-02-06 14:37:20,196 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-06 14:37:20,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874708187] [2025-02-06 14:37:20,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874708187] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:37:20,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-02-06 14:37:20,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2025-02-06 14:37:20,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661729684] [2025-02-06 14:37:20,196 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-02-06 14:37:20,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 14:37:20,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:37:20,196 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 14:37:20,196 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=221, Unknown=1, NotChecked=0, Total=272 [2025-02-06 14:37:20,196 INFO L87 Difference]: Start difference. First operand 326 states and 350 transitions. Second operand has 11 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 14:37:20,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:37:20,623 INFO L93 Difference]: Finished difference Result 452 states and 458 transitions. [2025-02-06 14:37:20,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-06 14:37:20,624 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 74 [2025-02-06 14:37:20,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:37:20,625 INFO L225 Difference]: With dead ends: 452 [2025-02-06 14:37:20,625 INFO L226 Difference]: Without dead ends: 451 [2025-02-06 14:37:20,625 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=99, Invalid=362, Unknown=1, NotChecked=0, Total=462 [2025-02-06 14:37:20,626 INFO L435 NwaCegarLoop]: 177 mSDtfsCounter, 366 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 1328 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-06 14:37:20,626 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 1328 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-06 14:37:20,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2025-02-06 14:37:20,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 378. [2025-02-06 14:37:20,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 270 states have (on average 1.5703703703703704) internal successors, (424), 364 states have internal predecessors, (424), 8 states have call successors, (8), 5 states have call predecessors, (8), 7 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) [2025-02-06 14:37:20,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 444 transitions. [2025-02-06 14:37:20,636 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 444 transitions. Word has length 74 [2025-02-06 14:37:20,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:37:20,636 INFO L471 AbstractCegarLoop]: Abstraction has 378 states and 444 transitions. [2025-02-06 14:37:20,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 14:37:20,637 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 444 transitions. [2025-02-06 14:37:20,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-02-06 14:37:20,637 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:37:20,637 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:37:20,644 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-02-06 14:37:20,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:37:20,838 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting func_to_recursive_line_25_to_33_0Err52ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2025-02-06 14:37:20,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:37:20,838 INFO L85 PathProgramCache]: Analyzing trace with hash -920503734, now seen corresponding path program 1 times [2025-02-06 14:37:20,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:37:20,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707687754] [2025-02-06 14:37:20,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:37:20,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:37:20,846 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-02-06 14:37:20,857 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-02-06 14:37:20,857 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:37:20,857 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-06 14:37:20,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [809721693] [2025-02-06 14:37:20,858 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:37:20,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:37:20,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:37:20,860 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) [2025-02-06 14:37:20,861 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 [2025-02-06 14:37:20,931 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-02-06 14:37:20,959 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-02-06 14:37:20,959 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:37:20,959 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:37:20,960 INFO L256 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-02-06 14:37:20,962 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:37:20,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-06 14:37:21,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-02-06 14:37:21,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2025-02-06 14:37:21,107 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 14:37:21,107 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:37:21,338 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 14:37:21,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:37:21,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707687754] [2025-02-06 14:37:21,338 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-06 14:37:21,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809721693] [2025-02-06 14:37:21,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809721693] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:37:21,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 14:37:21,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2025-02-06 14:37:21,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902328883] [2025-02-06 14:37:21,339 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 14:37:21,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-06 14:37:21,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:37:21,339 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-06 14:37:21,339 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2025-02-06 14:37:21,339 INFO L87 Difference]: Start difference. First operand 378 states and 444 transitions. Second operand has 17 states, 14 states have (on average 10.0) internal successors, (140), 14 states have internal predecessors, (140), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 14:37:22,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:37:22,170 INFO L93 Difference]: Finished difference Result 405 states and 452 transitions. [2025-02-06 14:37:22,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-06 14:37:22,171 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 10.0) internal successors, (140), 14 states have internal predecessors, (140), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 75 [2025-02-06 14:37:22,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:37:22,172 INFO L225 Difference]: With dead ends: 405 [2025-02-06 14:37:22,172 INFO L226 Difference]: Without dead ends: 404 [2025-02-06 14:37:22,172 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 129 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=159, Invalid=491, Unknown=0, NotChecked=0, Total=650 [2025-02-06 14:37:22,173 INFO L435 NwaCegarLoop]: 170 mSDtfsCounter, 775 mSDsluCounter, 1096 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-06 14:37:22,173 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 1266 Invalid, 801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-02-06 14:37:22,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2025-02-06 14:37:22,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 379. [2025-02-06 14:37:22,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 271 states have (on average 1.5608856088560885) internal successors, (423), 364 states have internal predecessors, (423), 8 states have call successors, (8), 5 states have call predecessors, (8), 8 states have return successors, (14), 9 states have call predecessors, (14), 8 states have call successors, (14) [2025-02-06 14:37:22,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 445 transitions. [2025-02-06 14:37:22,184 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 445 transitions. Word has length 75 [2025-02-06 14:37:22,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:37:22,184 INFO L471 AbstractCegarLoop]: Abstraction has 379 states and 445 transitions. [2025-02-06 14:37:22,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 10.0) internal successors, (140), 14 states have internal predecessors, (140), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 14:37:22,185 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 445 transitions. [2025-02-06 14:37:22,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2025-02-06 14:37:22,185 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:37:22,185 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:37:22,192 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-02-06 14:37:22,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:37:22,385 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting func_to_recursive_line_25_to_33_0Err51ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2025-02-06 14:37:22,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:37:22,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1529155397, now seen corresponding path program 1 times [2025-02-06 14:37:22,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:37:22,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184242692] [2025-02-06 14:37:22,386 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:37:22,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:37:22,394 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 76 statements into 1 equivalence classes. [2025-02-06 14:37:22,402 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 76 of 76 statements. [2025-02-06 14:37:22,403 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:37:22,403 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-06 14:37:22,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1000339515] [2025-02-06 14:37:22,403 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:37:22,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:37:22,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:37:22,409 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 14:37:22,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-02-06 14:37:22,499 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 76 statements into 1 equivalence classes. [2025-02-06 14:37:22,534 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 76 of 76 statements. [2025-02-06 14:37:22,534 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:37:22,534 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:37:22,541 INFO L256 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-02-06 14:37:22,543 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:37:22,546 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 [2025-02-06 14:37:22,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 14:37:22,710 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 14:37:22,710 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:37:23,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:37:23,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184242692] [2025-02-06 14:37:23,034 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-06 14:37:23,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000339515] [2025-02-06 14:37:23,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000339515] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:37:23,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-02-06 14:37:23,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2025-02-06 14:37:23,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414387104] [2025-02-06 14:37:23,035 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-02-06 14:37:23,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 14:37:23,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:37:23,036 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 14:37:23,036 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2025-02-06 14:37:23,036 INFO L87 Difference]: Start difference. First operand 379 states and 445 transitions. Second operand has 12 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 14:37:23,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:37:23,416 INFO L93 Difference]: Finished difference Result 451 states and 458 transitions. [2025-02-06 14:37:23,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-06 14:37:23,416 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 76 [2025-02-06 14:37:23,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:37:23,418 INFO L225 Difference]: With dead ends: 451 [2025-02-06 14:37:23,418 INFO L226 Difference]: Without dead ends: 450 [2025-02-06 14:37:23,419 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2025-02-06 14:37:23,419 INFO L435 NwaCegarLoop]: 178 mSDtfsCounter, 428 mSDsluCounter, 1076 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 1254 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 14:37:23,419 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 1254 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 14:37:23,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2025-02-06 14:37:23,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 379. [2025-02-06 14:37:23,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 271 states have (on average 1.5571955719557196) internal successors, (422), 364 states have internal predecessors, (422), 8 states have call successors, (8), 5 states have call predecessors, (8), 8 states have return successors, (14), 9 states have call predecessors, (14), 8 states have call successors, (14) [2025-02-06 14:37:23,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 444 transitions. [2025-02-06 14:37:23,427 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 444 transitions. Word has length 76 [2025-02-06 14:37:23,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:37:23,427 INFO L471 AbstractCegarLoop]: Abstraction has 379 states and 444 transitions. [2025-02-06 14:37:23,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 14:37:23,427 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 444 transitions. [2025-02-06 14:37:23,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2025-02-06 14:37:23,429 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:37:23,429 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:37:23,436 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-02-06 14:37:23,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:37:23,630 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting func_to_recursive_line_25_to_33_0Err50ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2025-02-06 14:37:23,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:37:23,630 INFO L85 PathProgramCache]: Analyzing trace with hash 159177128, now seen corresponding path program 1 times [2025-02-06 14:37:23,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:37:23,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967837917] [2025-02-06 14:37:23,630 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:37:23,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:37:23,638 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 77 statements into 1 equivalence classes. [2025-02-06 14:37:23,644 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 77 of 77 statements. [2025-02-06 14:37:23,644 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:37:23,644 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-06 14:37:23,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [804396552] [2025-02-06 14:37:23,645 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:37:23,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:37:23,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:37:23,647 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 14:37:23,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-02-06 14:37:23,720 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 77 statements into 1 equivalence classes. [2025-02-06 14:37:23,752 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 77 of 77 statements. [2025-02-06 14:37:23,752 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:37:23,752 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:37:23,754 INFO L256 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-02-06 14:37:23,756 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:37:23,769 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 [2025-02-06 14:37:23,855 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 25 treesize of output 13 [2025-02-06 14:37:23,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2025-02-06 14:37:23,929 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 14:37:23,929 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:37:45,893 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 6 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 14:37:45,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:37:45,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967837917] [2025-02-06 14:37:45,893 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-06 14:37:45,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804396552] [2025-02-06 14:37:45,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804396552] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 14:37:45,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 14:37:45,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2025-02-06 14:37:45,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266834533] [2025-02-06 14:37:45,894 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 14:37:45,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-06 14:37:45,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:37:45,895 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-06 14:37:45,895 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=304, Unknown=5, NotChecked=0, Total=380 [2025-02-06 14:37:45,895 INFO L87 Difference]: Start difference. First operand 379 states and 444 transitions. Second operand has 20 states, 17 states have (on average 8.529411764705882) internal successors, (145), 17 states have internal predecessors, (145), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 14:37:47,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:37:47,512 INFO L93 Difference]: Finished difference Result 404 states and 449 transitions. [2025-02-06 14:37:47,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-02-06 14:37:47,512 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 8.529411764705882) internal successors, (145), 17 states have internal predecessors, (145), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 77 [2025-02-06 14:37:47,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:37:47,513 INFO L225 Difference]: With dead ends: 404 [2025-02-06 14:37:47,513 INFO L226 Difference]: Without dead ends: 403 [2025-02-06 14:37:47,514 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 131 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 22.1s TimeCoverageRelationStatistics Valid=224, Invalid=701, Unknown=5, NotChecked=0, Total=930 [2025-02-06 14:37:47,514 INFO L435 NwaCegarLoop]: 170 mSDtfsCounter, 1058 mSDsluCounter, 1317 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1059 SdHoareTripleChecker+Valid, 1487 SdHoareTripleChecker+Invalid, 937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-02-06 14:37:47,514 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1059 Valid, 1487 Invalid, 937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 915 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-02-06 14:37:47,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2025-02-06 14:37:47,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 378. [2025-02-06 14:37:47,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 271 states have (on average 1.5498154981549817) internal successors, (420), 363 states have internal predecessors, (420), 8 states have call successors, (8), 5 states have call predecessors, (8), 8 states have return successors, (14), 9 states have call predecessors, (14), 8 states have call successors, (14) [2025-02-06 14:37:47,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 442 transitions. [2025-02-06 14:37:47,522 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 442 transitions. Word has length 77 [2025-02-06 14:37:47,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:37:47,522 INFO L471 AbstractCegarLoop]: Abstraction has 378 states and 442 transitions. [2025-02-06 14:37:47,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 8.529411764705882) internal successors, (145), 17 states have internal predecessors, (145), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 14:37:47,522 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 442 transitions. [2025-02-06 14:37:47,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2025-02-06 14:37:47,523 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:37:47,523 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:37:47,530 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-02-06 14:37:47,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2025-02-06 14:37:47,727 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting func_to_recursive_line_25_to_33_0Err49ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2025-02-06 14:37:47,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:37:47,727 INFO L85 PathProgramCache]: Analyzing trace with hash 639523747, now seen corresponding path program 1 times [2025-02-06 14:37:47,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:37:47,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608915386] [2025-02-06 14:37:47,727 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:37:47,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:37:47,735 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 78 statements into 1 equivalence classes. [2025-02-06 14:37:47,743 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 78 of 78 statements. [2025-02-06 14:37:47,743 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:37:47,743 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-06 14:37:47,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [899899583] [2025-02-06 14:37:47,744 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:37:47,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:37:47,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:37:47,746 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 14:37:47,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-02-06 14:37:47,825 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 78 statements into 1 equivalence classes. [2025-02-06 14:37:47,855 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 78 of 78 statements. [2025-02-06 14:37:47,855 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:37:47,855 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:37:47,857 INFO L256 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-02-06 14:37:47,858 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:37:47,861 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 [2025-02-06 14:37:47,932 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 14:37:48,024 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 14:37:48,024 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 14:37:48,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 14:37:48,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608915386] [2025-02-06 14:37:48,428 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-06 14:37:48,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899899583] [2025-02-06 14:37:48,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899899583] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 14:37:48,428 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-02-06 14:37:48,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2025-02-06 14:37:48,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136691394] [2025-02-06 14:37:48,428 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-02-06 14:37:48,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-06 14:37:48,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 14:37:48,429 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-06 14:37:48,429 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2025-02-06 14:37:48,429 INFO L87 Difference]: Start difference. First operand 378 states and 442 transitions. Second operand has 13 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 14:37:48,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 14:37:48,869 INFO L93 Difference]: Finished difference Result 448 states and 455 transitions. [2025-02-06 14:37:48,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-06 14:37:48,869 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 78 [2025-02-06 14:37:48,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 14:37:48,870 INFO L225 Difference]: With dead ends: 448 [2025-02-06 14:37:48,870 INFO L226 Difference]: Without dead ends: 447 [2025-02-06 14:37:48,871 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=164, Invalid=592, Unknown=0, NotChecked=0, Total=756 [2025-02-06 14:37:48,871 INFO L435 NwaCegarLoop]: 179 mSDtfsCounter, 411 mSDsluCounter, 1209 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 1388 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-06 14:37:48,871 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 1388 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-06 14:37:48,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2025-02-06 14:37:48,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 378. [2025-02-06 14:37:48,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 271 states have (on average 1.5461254612546125) internal successors, (419), 363 states have internal predecessors, (419), 8 states have call successors, (8), 5 states have call predecessors, (8), 8 states have return successors, (14), 9 states have call predecessors, (14), 8 states have call successors, (14) [2025-02-06 14:37:48,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 441 transitions. [2025-02-06 14:37:48,880 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 441 transitions. Word has length 78 [2025-02-06 14:37:48,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 14:37:48,880 INFO L471 AbstractCegarLoop]: Abstraction has 378 states and 441 transitions. [2025-02-06 14:37:48,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 14:37:48,880 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 441 transitions. [2025-02-06 14:37:48,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-02-06 14:37:48,881 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 14:37:48,881 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 14:37:48,888 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-02-06 14:37:49,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2025-02-06 14:37:49,081 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting func_to_recursive_line_25_to_33_0Err48ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2025-02-06 14:37:49,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 14:37:49,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1649600250, now seen corresponding path program 1 times [2025-02-06 14:37:49,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 14:37:49,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347821787] [2025-02-06 14:37:49,082 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:37:49,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 14:37:49,089 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-02-06 14:37:49,096 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-02-06 14:37:49,096 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:37:49,096 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-06 14:37:49,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1141974050] [2025-02-06 14:37:49,097 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 14:37:49,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 14:37:49,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 14:37:49,099 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 14:37:49,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-02-06 14:37:49,172 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-02-06 14:37:49,200 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-02-06 14:37:49,200 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 14:37:49,200 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 14:37:49,202 INFO L256 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-02-06 14:37:49,203 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 14:37:49,211 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 [2025-02-06 14:37:49,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-02-06 14:37:49,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16 [2025-02-06 14:37:49,372 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 14:37:49,372 INFO L312 TraceCheckSpWp]: Computing backward predicates...