./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd2.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 4ff641574c5c4b41213c0a7618630c50b2b820c3ae0c2511bc348b3db9b6781b --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 10:03:27,819 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 10:03:27,858 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 10:03:27,861 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 10:03:27,862 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 10:03:27,875 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 10:03:27,876 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 10:03:27,876 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 10:03:27,876 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 10:03:27,876 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 10:03:27,876 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 10:03:27,876 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 10:03:27,877 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 10:03:27,877 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 10:03:27,877 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 10:03:27,877 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 10:03:27,877 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 10:03:27,877 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 10:03:27,877 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 10:03:27,877 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 10:03:27,877 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 10:03:27,877 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 10:03:27,877 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 10:03:27,877 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 10:03:27,878 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 10:03:27,878 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 10:03:27,878 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 10:03:27,878 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 10:03:27,878 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 10:03:27,878 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 10:03:27,878 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 10:03:27,878 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 10:03:27,878 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 10:03:27,878 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 10:03:27,878 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 10:03:27,878 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 10:03:27,878 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 10:03:27,878 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 10:03:27,878 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 10:03:27,878 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 10:03:27,878 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 10:03:27,878 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 10:03:27,878 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 10:03:27,879 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 10:03:27,879 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 10:03:27,879 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 -> 4ff641574c5c4b41213c0a7618630c50b2b820c3ae0c2511bc348b3db9b6781b [2025-02-08 10:03:28,067 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 10:03:28,073 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 10:03:28,074 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 10:03:28,075 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 10:03:28,075 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 10:03:28,076 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd2.c [2025-02-08 10:03:29,312 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9f2a7d416/a3a689a534b2408583de33ec58f72a55/FLAG91854a054 [2025-02-08 10:03:29,555 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 10:03:29,556 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd2.c [2025-02-08 10:03:29,567 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9f2a7d416/a3a689a534b2408583de33ec58f72a55/FLAG91854a054 [2025-02-08 10:03:29,582 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9f2a7d416/a3a689a534b2408583de33ec58f72a55 [2025-02-08 10:03:29,584 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 10:03:29,585 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 10:03:29,586 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 10:03:29,587 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 10:03:29,590 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 10:03:29,591 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 10:03:29" (1/1) ... [2025-02-08 10:03:29,592 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9c793ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:03:29, skipping insertion in model container [2025-02-08 10:03:29,592 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 10:03:29" (1/1) ... [2025-02-08 10:03:29,605 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 10:03:29,722 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 10:03:29,729 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 10:03:29,748 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 10:03:29,758 INFO L204 MainTranslator]: Completed translation [2025-02-08 10:03:29,758 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:03:29 WrapperNode [2025-02-08 10:03:29,759 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 10:03:29,759 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 10:03:29,759 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 10:03:29,760 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 10:03:29,764 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:03:29" (1/1) ... [2025-02-08 10:03:29,770 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:03:29" (1/1) ... [2025-02-08 10:03:29,783 INFO L138 Inliner]: procedures = 17, calls = 136, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 137 [2025-02-08 10:03:29,784 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 10:03:29,784 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 10:03:29,784 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 10:03:29,784 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 10:03:29,791 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:03:29" (1/1) ... [2025-02-08 10:03:29,791 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:03:29" (1/1) ... [2025-02-08 10:03:29,794 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:03:29" (1/1) ... [2025-02-08 10:03:29,807 INFO L175 MemorySlicer]: Split 88 memory accesses to 12 slices as follows [2, 7, 8, 9, 12, 10, 5, 8, 7, 5, 7, 8]. 14 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 0, 8, 0, 0, 0, 0, 0, 0, 0, 0, 0]. The 20 writes are split as follows [0, 3, 0, 1, 1, 2, 2, 2, 3, 2, 2, 2]. [2025-02-08 10:03:29,807 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:03:29" (1/1) ... [2025-02-08 10:03:29,807 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:03:29" (1/1) ... [2025-02-08 10:03:29,815 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:03:29" (1/1) ... [2025-02-08 10:03:29,816 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:03:29" (1/1) ... [2025-02-08 10:03:29,817 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:03:29" (1/1) ... [2025-02-08 10:03:29,818 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:03:29" (1/1) ... [2025-02-08 10:03:29,821 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 10:03:29,822 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 10:03:29,822 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 10:03:29,822 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 10:03:29,823 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:03:29" (1/1) ... [2025-02-08 10:03:29,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 10:03:29,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:03:29,853 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 10:03:29,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 10:03:29,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 10:03:29,886 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-08 10:03:29,886 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-08 10:03:29,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 10:03:29,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 10:03:29,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-08 10:03:29,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-08 10:03:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-02-08 10:03:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-02-08 10:03:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-02-08 10:03:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-02-08 10:03:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-02-08 10:03:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-02-08 10:03:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-02-08 10:03:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-02-08 10:03:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_34_to_60_0 [2025-02-08 10:03:29,887 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_34_to_60_0 [2025-02-08 10:03:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-08 10:03:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_40_to_48_0 [2025-02-08 10:03:29,887 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_40_to_48_0 [2025-02-08 10:03:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 10:03:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 10:03:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-08 10:03:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-02-08 10:03:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-02-08 10:03:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-02-08 10:03:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-02-08 10:03:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2025-02-08 10:03:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2025-02-08 10:03:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2025-02-08 10:03:29,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2025-02-08 10:03:29,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2025-02-08 10:03:29,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 10:03:29,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 10:03:29,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 10:03:29,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 10:03:29,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-08 10:03:29,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-02-08 10:03:29,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-02-08 10:03:29,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-02-08 10:03:29,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-02-08 10:03:29,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2025-02-08 10:03:29,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2025-02-08 10:03:29,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2025-02-08 10:03:29,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2025-02-08 10:03:29,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2025-02-08 10:03:29,888 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-08 10:03:29,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-08 10:03:29,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 10:03:29,985 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 10:03:29,986 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 10:03:30,572 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L132: havoc main_#t~mem63#1;call ULTIMATE.dealloc(main_~#x~0#1.base, main_~#x~0#1.offset);havoc main_~#x~0#1.base, main_~#x~0#1.offset;call ULTIMATE.dealloc(main_~#y~0#1.base, main_~#y~0#1.offset);havoc main_~#y~0#1.base, main_~#y~0#1.offset;call ULTIMATE.dealloc(main_~#a~0#1.base, main_~#a~0#1.offset);havoc main_~#a~0#1.base, main_~#a~0#1.offset;call ULTIMATE.dealloc(main_~#b~0#1.base, main_~#b~0#1.offset);havoc main_~#b~0#1.base, main_~#b~0#1.offset;call ULTIMATE.dealloc(main_~#p~0#1.base, main_~#p~0#1.offset);havoc main_~#p~0#1.base, main_~#p~0#1.offset;call ULTIMATE.dealloc(main_~#q~0#1.base, main_~#q~0#1.offset);havoc main_~#q~0#1.base, main_~#q~0#1.offset;call ULTIMATE.dealloc(main_~#r~0#1.base, main_~#r~0#1.offset);havoc main_~#r~0#1.base, main_~#r~0#1.offset;call ULTIMATE.dealloc(main_~#s~0#1.base, main_~#s~0#1.offset);havoc main_~#s~0#1.base, main_~#s~0#1.offset;call ULTIMATE.dealloc(main_~#c~0#1.base, main_~#c~0#1.offset);havoc main_~#c~0#1.base, main_~#c~0#1.offset;call ULTIMATE.dealloc(main_~#k~0#1.base, main_~#k~0#1.offset);havoc main_~#k~0#1.base, main_~#k~0#1.offset; [2025-02-08 10:03:30,596 INFO L? ?]: Removed 240 outVars from TransFormulas that were not future-live. [2025-02-08 10:03:30,597 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 10:03:30,605 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 10:03:30,606 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 10:03:30,606 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 10:03:30 BoogieIcfgContainer [2025-02-08 10:03:30,606 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 10:03:30,608 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 10:03:30,608 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 10:03:30,611 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 10:03:30,612 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 10:03:29" (1/3) ... [2025-02-08 10:03:30,612 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1478d396 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 10:03:30, skipping insertion in model container [2025-02-08 10:03:30,612 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:03:29" (2/3) ... [2025-02-08 10:03:30,612 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1478d396 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 10:03:30, skipping insertion in model container [2025-02-08 10:03:30,612 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 10:03:30" (3/3) ... [2025-02-08 10:03:30,613 INFO L128 eAbstractionObserver]: Analyzing ICFG recursified_egcd2.c [2025-02-08 10:03:30,624 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 10:03:30,626 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG recursified_egcd2.c that has 5 procedures, 172 locations, 1 initial locations, 0 loop locations, and 64 error locations. [2025-02-08 10:03:30,663 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 10:03:30,671 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;@1f9c591a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 10:03:30,671 INFO L334 AbstractCegarLoop]: Starting to check reachability of 64 error locations. [2025-02-08 10:03:30,673 INFO L276 IsEmpty]: Start isEmpty. Operand has 172 states, 91 states have (on average 1.7692307692307692) internal successors, (161), 157 states have internal predecessors, (161), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-02-08 10:03:30,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-02-08 10:03:30,677 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:03:30,677 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:03:30,677 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_40_to_48_0Err43ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2025-02-08 10:03:30,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:03:30,681 INFO L85 PathProgramCache]: Analyzing trace with hash 150880289, now seen corresponding path program 1 times [2025-02-08 10:03:30,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:03:30,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130977341] [2025-02-08 10:03:30,686 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:03:30,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:03:30,774 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-08 10:03:30,810 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-08 10:03:30,811 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:03:30,811 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:03:30,880 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 10:03:30,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:03:30,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130977341] [2025-02-08 10:03:30,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130977341] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:03:30,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649438680] [2025-02-08 10:03:30,882 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:03:30,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:03:30,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:03:30,886 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:03:30,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-08 10:03:30,972 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-08 10:03:31,020 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-08 10:03:31,020 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:03:31,020 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:03:31,023 INFO L256 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-08 10:03:31,026 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:03:31,032 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 10:03:31,032 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:03:31,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649438680] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:03:31,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 10:03:31,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-02-08 10:03:31,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233827440] [2025-02-08 10:03:31,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:03:31,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-08 10:03:31,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:03:31,051 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-08 10:03:31,052 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-08 10:03:31,054 INFO L87 Difference]: Start difference. First operand has 172 states, 91 states have (on average 1.7692307692307692) internal successors, (161), 157 states have internal predecessors, (161), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:03:31,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:03:31,083 INFO L93 Difference]: Finished difference Result 342 states and 379 transitions. [2025-02-08 10:03:31,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-08 10:03:31,085 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2025-02-08 10:03:31,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:03:31,089 INFO L225 Difference]: With dead ends: 342 [2025-02-08 10:03:31,090 INFO L226 Difference]: Without dead ends: 167 [2025-02-08 10:03:31,093 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-08 10:03:31,095 INFO L435 NwaCegarLoop]: 181 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 10:03:31,095 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 10:03:31,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2025-02-08 10:03:31,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2025-02-08 10:03:31,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 88 states have (on average 1.7386363636363635) internal successors, (153), 153 states have internal predecessors, (153), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2025-02-08 10:03:31,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 175 transitions. [2025-02-08 10:03:31,123 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 175 transitions. Word has length 21 [2025-02-08 10:03:31,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:03:31,124 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 175 transitions. [2025-02-08 10:03:31,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:03:31,124 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 175 transitions. [2025-02-08 10:03:31,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-02-08 10:03:31,125 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:03:31,125 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:03:31,135 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 10:03:31,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-02-08 10:03:31,326 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_40_to_48_0Err43ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2025-02-08 10:03:31,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:03:31,327 INFO L85 PathProgramCache]: Analyzing trace with hash -717109345, now seen corresponding path program 1 times [2025-02-08 10:03:31,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:03:31,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443360164] [2025-02-08 10:03:31,327 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:03:31,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:03:31,350 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-08 10:03:31,406 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-08 10:03:31,406 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:03:31,406 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:03:31,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1216791434] [2025-02-08 10:03:31,411 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:03:31,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:03:31,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:03:31,413 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:03:31,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-08 10:03:31,504 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-08 10:03:31,565 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-08 10:03:31,565 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:03:31,565 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:03:31,573 INFO L256 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 43 conjuncts are in the unsatisfiable core [2025-02-08 10:03:31,577 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:03:31,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-08 10:03:31,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 10:03:31,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-08 10:03:31,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-02-08 10:03:31,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-02-08 10:03:31,811 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 10:03:31,811 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:03:31,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:03:31,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443360164] [2025-02-08 10:03:31,812 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:03:31,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216791434] [2025-02-08 10:03:31,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216791434] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:03:31,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:03:31,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-02-08 10:03:31,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698821941] [2025-02-08 10:03:31,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:03:31,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-08 10:03:31,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:03:31,814 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-08 10:03:31,814 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2025-02-08 10:03:31,814 INFO L87 Difference]: Start difference. First operand 167 states and 175 transitions. Second operand has 13 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:03:32,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:03:32,215 INFO L93 Difference]: Finished difference Result 303 states and 318 transitions. [2025-02-08 10:03:32,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-08 10:03:32,216 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2025-02-08 10:03:32,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:03:32,218 INFO L225 Difference]: With dead ends: 303 [2025-02-08 10:03:32,218 INFO L226 Difference]: Without dead ends: 302 [2025-02-08 10:03:32,218 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2025-02-08 10:03:32,219 INFO L435 NwaCegarLoop]: 148 mSDtfsCounter, 260 mSDsluCounter, 1391 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 1539 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 10:03:32,219 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 1539 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 10:03:32,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2025-02-08 10:03:32,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 226. [2025-02-08 10:03:32,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 140 states have (on average 1.7571428571428571) internal successors, (246), 206 states have internal predecessors, (246), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (18), 15 states have call predecessors, (18), 16 states have call successors, (18) [2025-02-08 10:03:32,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 280 transitions. [2025-02-08 10:03:32,244 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 280 transitions. Word has length 21 [2025-02-08 10:03:32,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:03:32,244 INFO L471 AbstractCegarLoop]: Abstraction has 226 states and 280 transitions. [2025-02-08 10:03:32,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:03:32,244 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 280 transitions. [2025-02-08 10:03:32,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-02-08 10:03:32,245 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:03:32,245 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:03:32,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-08 10:03:32,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:03:32,453 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2025-02-08 10:03:32,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:03:32,453 INFO L85 PathProgramCache]: Analyzing trace with hash -720531276, now seen corresponding path program 1 times [2025-02-08 10:03:32,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:03:32,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041368720] [2025-02-08 10:03:32,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:03:32,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:03:32,467 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-08 10:03:32,483 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-08 10:03:32,483 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:03:32,483 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:03:32,829 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 10:03:32,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:03:32,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041368720] [2025-02-08 10:03:32,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041368720] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:03:32,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:03:32,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-02-08 10:03:32,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733163330] [2025-02-08 10:03:32,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:03:32,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-08 10:03:32,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:03:32,831 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-08 10:03:32,831 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2025-02-08 10:03:32,831 INFO L87 Difference]: Start difference. First operand 226 states and 280 transitions. Second operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 10:03:33,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:03:33,708 INFO L93 Difference]: Finished difference Result 259 states and 312 transitions. [2025-02-08 10:03:33,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-08 10:03:33,710 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 21 [2025-02-08 10:03:33,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:03:33,712 INFO L225 Difference]: With dead ends: 259 [2025-02-08 10:03:33,712 INFO L226 Difference]: Without dead ends: 226 [2025-02-08 10:03:33,712 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2025-02-08 10:03:33,713 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 134 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 1147 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 1154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-02-08 10:03:33,713 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 394 Invalid, 1154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1147 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-02-08 10:03:33,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2025-02-08 10:03:33,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2025-02-08 10:03:33,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 140 states have (on average 1.75) internal successors, (245), 205 states have internal predecessors, (245), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (18), 15 states have call predecessors, (18), 16 states have call successors, (18) [2025-02-08 10:03:33,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 279 transitions. [2025-02-08 10:03:33,733 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 279 transitions. Word has length 21 [2025-02-08 10:03:33,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:03:33,737 INFO L471 AbstractCegarLoop]: Abstraction has 226 states and 279 transitions. [2025-02-08 10:03:33,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 10:03:33,737 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 279 transitions. [2025-02-08 10:03:33,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-02-08 10:03:33,738 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:03:33,738 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:03:33,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 10:03:33,738 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_40_to_48_0Err42ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2025-02-08 10:03:33,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:03:33,738 INFO L85 PathProgramCache]: Analyzing trace with hash -755553148, now seen corresponding path program 1 times [2025-02-08 10:03:33,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:03:33,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855973633] [2025-02-08 10:03:33,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:03:33,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:03:33,758 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-08 10:03:33,781 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-08 10:03:33,782 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:03:33,782 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 10:03:33,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2132030264] [2025-02-08 10:03:33,783 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:03:33,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:03:33,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:03:33,788 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:03:33,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-08 10:03:33,870 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-08 10:03:33,924 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-08 10:03:33,925 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:03:33,925 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:03:33,933 INFO L256 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 49 conjuncts are in the unsatisfiable core [2025-02-08 10:03:33,936 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:03:33,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2025-02-08 10:03:33,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-08 10:03:34,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-08 10:03:34,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-02-08 10:03:34,136 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 10:03:34,136 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:03:34,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:03:34,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855973633] [2025-02-08 10:03:34,136 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 10:03:34,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132030264] [2025-02-08 10:03:34,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132030264] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:03:34,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:03:34,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-02-08 10:03:34,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002991631] [2025-02-08 10:03:34,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:03:34,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-08 10:03:34,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:03:34,137 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-08 10:03:34,137 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2025-02-08 10:03:34,137 INFO L87 Difference]: Start difference. First operand 226 states and 279 transitions. Second operand has 14 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:03:34,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:03:34,522 INFO L93 Difference]: Finished difference Result 275 states and 289 transitions. [2025-02-08 10:03:34,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-08 10:03:34,522 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2025-02-08 10:03:34,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:03:34,524 INFO L225 Difference]: With dead ends: 275 [2025-02-08 10:03:34,524 INFO L226 Difference]: Without dead ends: 274 [2025-02-08 10:03:34,524 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2025-02-08 10:03:34,528 INFO L435 NwaCegarLoop]: 149 mSDtfsCounter, 211 mSDsluCounter, 1406 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 1555 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 10:03:34,528 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 1555 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 10:03:34,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2025-02-08 10:03:34,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 226. [2025-02-08 10:03:34,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 140 states have (on average 1.7428571428571429) internal successors, (244), 205 states have internal predecessors, (244), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (18), 15 states have call predecessors, (18), 16 states have call successors, (18) [2025-02-08 10:03:34,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 278 transitions. [2025-02-08 10:03:34,547 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 278 transitions. Word has length 22 [2025-02-08 10:03:34,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:03:34,547 INFO L471 AbstractCegarLoop]: Abstraction has 226 states and 278 transitions. [2025-02-08 10:03:34,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:03:34,547 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 278 transitions. [2025-02-08 10:03:34,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-02-08 10:03:34,548 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:03:34,548 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] [2025-02-08 10:03:34,558 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-08 10:03:34,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:03:34,752 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_40_to_48_0Err41ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2025-02-08 10:03:34,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:03:34,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1947311043, now seen corresponding path program 1 times [2025-02-08 10:03:34,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:03:34,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004065338] [2025-02-08 10:03:34,753 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:03:34,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:03:34,772 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-08 10:03:34,796 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-08 10:03:34,796 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:03:34,796 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat