./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd2-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd2-ll.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 020f2d3a270ed8dfae4a7c8fa8db16a8ad645d088f685c7c500cf3124112cf45 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 02:35:02,668 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 02:35:02,724 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-01-10 02:35:02,727 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 02:35:02,727 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 02:35:02,741 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 02:35:02,742 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 02:35:02,742 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 02:35:02,742 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 02:35:02,742 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 02:35:02,742 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 02:35:02,742 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 02:35:02,743 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 02:35:02,743 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 02:35:02,743 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 02:35:02,743 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 02:35:02,743 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-10 02:35:02,743 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 02:35:02,743 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 02:35:02,743 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 02:35:02,743 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 02:35:02,743 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-10 02:35:02,744 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 02:35:02,744 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-10 02:35:02,744 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-01-10 02:35:02,744 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 02:35:02,744 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 02:35:02,744 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-10 02:35:02,744 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 02:35:02,744 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 02:35:02,744 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 02:35:02,744 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 02:35:02,745 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 02:35:02,745 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 02:35:02,745 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 02:35:02,745 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 02:35:02,745 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 02:35:02,745 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 02:35:02,745 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 02:35:02,745 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 02:35:02,745 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 02:35:02,745 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 02:35:02,745 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-10 02:35:02,745 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-10 02:35:02,746 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 02:35:02,746 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 02:35:02,746 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 02:35:02,746 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 02:35:02,746 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 02:35:02,746 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 02:35:02,746 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 -> 020f2d3a270ed8dfae4a7c8fa8db16a8ad645d088f685c7c500cf3124112cf45 [2025-01-10 02:35:02,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 02:35:02,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 02:35:02,965 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 02:35:02,966 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 02:35:02,966 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 02:35:02,967 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd2-ll.c [2025-01-10 02:35:04,183 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/27925be47/1cf37d57ca5f4629b634f9c455f33568/FLAG4449b7aca [2025-01-10 02:35:04,392 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 02:35:04,393 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd2-ll.c [2025-01-10 02:35:04,400 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/27925be47/1cf37d57ca5f4629b634f9c455f33568/FLAG4449b7aca [2025-01-10 02:35:04,752 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/27925be47/1cf37d57ca5f4629b634f9c455f33568 [2025-01-10 02:35:04,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 02:35:04,755 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 02:35:04,756 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 02:35:04,756 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 02:35:04,759 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 02:35:04,759 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:35:04" (1/1) ... [2025-01-10 02:35:04,760 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1998856b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:04, skipping insertion in model container [2025-01-10 02:35:04,760 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:35:04" (1/1) ... [2025-01-10 02:35:04,775 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 02:35:04,898 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 02:35:04,905 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 02:35:04,925 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 02:35:04,934 INFO L204 MainTranslator]: Completed translation [2025-01-10 02:35:04,934 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:04 WrapperNode [2025-01-10 02:35:04,935 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 02:35:04,935 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 02:35:04,935 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 02:35:04,936 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 02:35:04,940 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:04" (1/1) ... [2025-01-10 02:35:04,946 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:04" (1/1) ... [2025-01-10 02:35:04,958 INFO L138 Inliner]: procedures = 17, calls = 142, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 159 [2025-01-10 02:35:04,958 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 02:35:04,959 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 02:35:04,959 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 02:35:04,959 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 02:35:04,965 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:04" (1/1) ... [2025-01-10 02:35:04,965 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:04" (1/1) ... [2025-01-10 02:35:04,968 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:04" (1/1) ... [2025-01-10 02:35:04,990 INFO L175 MemorySlicer]: Split 86 memory accesses to 13 slices as follows [2, 7, 7, 3, 3, 7, 10, 12, 9, 8, 5, 8, 5]. 14 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. The 22 writes are split as follows [0, 3, 2, 1, 1, 3, 2, 1, 1, 2, 2, 2, 2]. [2025-01-10 02:35:04,991 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:04" (1/1) ... [2025-01-10 02:35:04,991 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:04" (1/1) ... [2025-01-10 02:35:04,999 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:04" (1/1) ... [2025-01-10 02:35:05,000 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:04" (1/1) ... [2025-01-10 02:35:05,001 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:04" (1/1) ... [2025-01-10 02:35:05,003 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:04" (1/1) ... [2025-01-10 02:35:05,004 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:04" (1/1) ... [2025-01-10 02:35:05,006 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 02:35:05,007 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 02:35:05,007 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 02:35:05,007 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 02:35:05,008 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:04" (1/1) ... [2025-01-10 02:35:05,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 02:35:05,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:35:05,033 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-10 02:35:05,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-10 02:35:05,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 02:35:05,059 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-01-10 02:35:05,059 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-01-10 02:35:05,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 02:35:05,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-10 02:35:05,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-01-10 02:35:05,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-01-10 02:35:05,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-01-10 02:35:05,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-01-10 02:35:05,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-01-10 02:35:05,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-01-10 02:35:05,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-01-10 02:35:05,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-01-10 02:35:05,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-01-10 02:35:05,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-01-10 02:35:05,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-01-10 02:35:05,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-10 02:35:05,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-10 02:35:05,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-10 02:35:05,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-01-10 02:35:05,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-01-10 02:35:05,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-01-10 02:35:05,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-01-10 02:35:05,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-01-10 02:35:05,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2025-01-10 02:35:05,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2025-01-10 02:35:05,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2025-01-10 02:35:05,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2025-01-10 02:35:05,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2025-01-10 02:35:05,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2025-01-10 02:35:05,063 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_45_to_53_0 [2025-01-10 02:35:05,063 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_45_to_53_0 [2025-01-10 02:35:05,063 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_39_to_65_0 [2025-01-10 02:35:05,063 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_39_to_65_0 [2025-01-10 02:35:05,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 02:35:05,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 02:35:05,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-10 02:35:05,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-10 02:35:05,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-01-10 02:35:05,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-01-10 02:35:05,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-01-10 02:35:05,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-01-10 02:35:05,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-01-10 02:35:05,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2025-01-10 02:35:05,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2025-01-10 02:35:05,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2025-01-10 02:35:05,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2025-01-10 02:35:05,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2025-01-10 02:35:05,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2025-01-10 02:35:05,063 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-01-10 02:35:05,063 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-01-10 02:35:05,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-10 02:35:05,188 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 02:35:05,189 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 02:35:05,681 INFO L? ?]: Removed 217 outVars from TransFormulas that were not future-live. [2025-01-10 02:35:05,681 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 02:35:05,689 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 02:35:05,690 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2025-01-10 02:35:05,690 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:35:05 BoogieIcfgContainer [2025-01-10 02:35:05,690 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 02:35:05,691 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 02:35:05,692 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 02:35:05,695 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 02:35:05,695 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 02:35:04" (1/3) ... [2025-01-10 02:35:05,695 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b9c3ec6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:35:05, skipping insertion in model container [2025-01-10 02:35:05,696 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:35:04" (2/3) ... [2025-01-10 02:35:05,696 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b9c3ec6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:35:05, skipping insertion in model container [2025-01-10 02:35:05,696 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:35:05" (3/3) ... [2025-01-10 02:35:05,697 INFO L128 eAbstractionObserver]: Analyzing ICFG recursified_egcd2-ll.c [2025-01-10 02:35:05,707 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 02:35:05,708 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG recursified_egcd2-ll.c that has 5 procedures, 179 locations, 1 initial locations, 0 loop locations, and 64 error locations. [2025-01-10 02:35:05,757 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 02:35:05,766 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;@30fe3999, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 02:35:05,767 INFO L334 AbstractCegarLoop]: Starting to check reachability of 64 error locations. [2025-01-10 02:35:05,770 INFO L276 IsEmpty]: Start isEmpty. Operand has 179 states, 96 states have (on average 1.7291666666666667) internal successors, (166), 162 states have internal predecessors, (166), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2025-01-10 02:35:05,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-01-10 02:35:05,775 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:35:05,776 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:35:05,776 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_39_to_65_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_39_to_65_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2025-01-10 02:35:05,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:35:05,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1406924726, now seen corresponding path program 1 times [2025-01-10 02:35:05,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:35:05,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398113536] [2025-01-10 02:35:05,787 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:05,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:35:05,865 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-10 02:35:05,901 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-10 02:35:05,901 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:05,901 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:35:05,964 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-10 02:35:05,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:35:05,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398113536] [2025-01-10 02:35:05,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398113536] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:35:05,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336683039] [2025-01-10 02:35:05,965 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:05,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:05,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:35:05,968 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:35:05,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-10 02:35:06,047 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-10 02:35:06,075 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-10 02:35:06,076 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:06,076 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:35:06,078 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-01-10 02:35:06,080 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:35:06,086 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-10 02:35:06,086 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 02:35:06,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336683039] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:35:06,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 02:35:06,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-01-10 02:35:06,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154427889] [2025-01-10 02:35:06,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:35:06,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-10 02:35:06,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:35:06,101 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-10 02:35:06,102 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-10 02:35:06,103 INFO L87 Difference]: Start difference. First operand has 179 states, 96 states have (on average 1.7291666666666667) internal successors, (166), 162 states have internal predecessors, (166), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-10 02:35:06,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:35:06,127 INFO L93 Difference]: Finished difference Result 354 states and 397 transitions. [2025-01-10 02:35:06,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-10 02:35:06,133 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 15 [2025-01-10 02:35:06,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:35:06,141 INFO L225 Difference]: With dead ends: 354 [2025-01-10 02:35:06,142 INFO L226 Difference]: Without dead ends: 172 [2025-01-10 02:35:06,147 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-10 02:35:06,149 INFO L435 NwaCegarLoop]: 189 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, 189 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-10 02:35:06,151 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-10 02:35:06,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2025-01-10 02:35:06,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2025-01-10 02:35:06,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 91 states have (on average 1.7142857142857142) internal successors, (156), 156 states have internal predecessors, (156), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2025-01-10 02:35:06,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 182 transitions. [2025-01-10 02:35:06,195 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 182 transitions. Word has length 15 [2025-01-10 02:35:06,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:35:06,195 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 182 transitions. [2025-01-10 02:35:06,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-10 02:35:06,197 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 182 transitions. [2025-01-10 02:35:06,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-01-10 02:35:06,198 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:35:06,198 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:35:06,204 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-10 02:35:06,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-01-10 02:35:06,400 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_39_to_65_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_39_to_65_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2025-01-10 02:35:06,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:35:06,402 INFO L85 PathProgramCache]: Analyzing trace with hash 2109836346, now seen corresponding path program 1 times [2025-01-10 02:35:06,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:35:06,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110211159] [2025-01-10 02:35:06,402 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:06,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:35:06,445 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-10 02:35:06,489 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-10 02:35:06,489 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:06,489 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-10 02:35:06,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [147993713] [2025-01-10 02:35:06,492 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:06,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:06,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:35:06,494 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:35:06,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-10 02:35:06,567 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-10 02:35:06,602 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-10 02:35:06,602 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:06,602 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:35:06,603 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-01-10 02:35:06,605 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:35:06,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-01-10 02:35:06,844 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-10 02:35:06,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2025-01-10 02:35:06,865 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 02:35:06,865 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 02:35:06,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:35:06,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110211159] [2025-01-10 02:35:06,866 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-10 02:35:06,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147993713] [2025-01-10 02:35:06,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147993713] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:35:06,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:35:06,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-01-10 02:35:06,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032962766] [2025-01-10 02:35:06,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:35:06,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-10 02:35:06,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:35:06,867 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-10 02:35:06,867 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2025-01-10 02:35:06,868 INFO L87 Difference]: Start difference. First operand 172 states and 182 transitions. Second operand has 12 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 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) [2025-01-10 02:35:10,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 02:35:11,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:35:11,237 INFO L93 Difference]: Finished difference Result 176 states and 185 transitions. [2025-01-10 02:35:11,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-10 02:35:11,238 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 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 15 [2025-01-10 02:35:11,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:35:11,242 INFO L225 Difference]: With dead ends: 176 [2025-01-10 02:35:11,242 INFO L226 Difference]: Without dead ends: 175 [2025-01-10 02:35:11,242 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2025-01-10 02:35:11,243 INFO L435 NwaCegarLoop]: 166 mSDtfsCounter, 187 mSDsluCounter, 1037 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2025-01-10 02:35:11,243 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 1203 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 228 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2025-01-10 02:35:11,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2025-01-10 02:35:11,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2025-01-10 02:35:11,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 94 states have (on average 1.6808510638297873) internal successors, (158), 158 states have internal predecessors, (158), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2025-01-10 02:35:11,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 184 transitions. [2025-01-10 02:35:11,260 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 184 transitions. Word has length 15 [2025-01-10 02:35:11,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:35:11,262 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 184 transitions. [2025-01-10 02:35:11,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 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) [2025-01-10 02:35:11,262 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 184 transitions. [2025-01-10 02:35:11,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-01-10 02:35:11,262 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:35:11,263 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:35:11,271 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 [2025-01-10 02:35:11,467 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 [2025-01-10 02:35:11,467 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_39_to_65_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_39_to_65_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2025-01-10 02:35:11,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:35:11,468 INFO L85 PathProgramCache]: Analyzing trace with hash 980417466, now seen corresponding path program 1 times [2025-01-10 02:35:11,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:35:11,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700445529] [2025-01-10 02:35:11,468 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:11,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:35:11,485 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-10 02:35:11,523 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 02:35:11,524 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:11,524 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-10 02:35:11,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2122822815] [2025-01-10 02:35:11,529 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:11,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:11,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:35:11,534 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:35:11,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-10 02:35:11,602 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-10 02:35:11,632 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 02:35:11,633 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:11,633 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:35:11,634 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-01-10 02:35:11,636 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:35:11,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-10 02:35:11,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-10 02:35:12,084 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-10 02:35:12,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 55 [2025-01-10 02:35:12,116 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-10 02:35:12,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 52 [2025-01-10 02:35:12,149 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 02:35:12,149 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 02:35:12,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:35:12,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700445529] [2025-01-10 02:35:12,150 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-10 02:35:12,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122822815] [2025-01-10 02:35:12,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122822815] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:35:12,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:35:12,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-01-10 02:35:12,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037370447] [2025-01-10 02:35:12,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:35:12,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-01-10 02:35:12,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:35:12,151 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-01-10 02:35:12,152 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2025-01-10 02:35:12,152 INFO L87 Difference]: Start difference. First operand 175 states and 184 transitions. Second operand has 13 states, 10 states have (on average 1.2) internal successors, (12), 9 states have internal predecessors, (12), 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) [2025-01-10 02:35:16,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 02:35:16,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:35:16,507 INFO L93 Difference]: Finished difference Result 175 states and 184 transitions. [2025-01-10 02:35:16,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-01-10 02:35:16,507 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 1.2) internal successors, (12), 9 states have internal predecessors, (12), 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 16 [2025-01-10 02:35:16,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:35:16,509 INFO L225 Difference]: With dead ends: 175 [2025-01-10 02:35:16,509 INFO L226 Difference]: Without dead ends: 174 [2025-01-10 02:35:16,509 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2025-01-10 02:35:16,510 INFO L435 NwaCegarLoop]: 160 mSDtfsCounter, 208 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2025-01-10 02:35:16,510 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 870 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 219 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2025-01-10 02:35:16,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2025-01-10 02:35:16,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2025-01-10 02:35:16,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 94 states have (on average 1.6702127659574468) internal successors, (157), 157 states have internal predecessors, (157), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2025-01-10 02:35:16,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 183 transitions. [2025-01-10 02:35:16,519 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 183 transitions. Word has length 16 [2025-01-10 02:35:16,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:35:16,520 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 183 transitions. [2025-01-10 02:35:16,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 1.2) internal successors, (12), 9 states have internal predecessors, (12), 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) [2025-01-10 02:35:16,520 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 183 transitions. [2025-01-10 02:35:16,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-01-10 02:35:16,520 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:35:16,520 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:35:16,529 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-10 02:35:16,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:16,728 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_39_to_65_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_39_to_65_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2025-01-10 02:35:16,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:35:16,728 INFO L85 PathProgramCache]: Analyzing trace with hash 328170556, now seen corresponding path program 1 times [2025-01-10 02:35:16,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:35:16,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802231450] [2025-01-10 02:35:16,729 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:16,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:35:16,760 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-01-10 02:35:16,781 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-01-10 02:35:16,782 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:16,782 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-10 02:35:16,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [263028662] [2025-01-10 02:35:16,784 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:16,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:16,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:35:16,791 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:35:16,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-10 02:35:16,854 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-01-10 02:35:16,881 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-01-10 02:35:16,881 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:16,881 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:35:16,882 INFO L256 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-10 02:35:16,883 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:35:16,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2025-01-10 02:35:16,917 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 02:35:16,917 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 02:35:16,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:35:16,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802231450] [2025-01-10 02:35:16,918 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-10 02:35:16,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263028662] [2025-01-10 02:35:16,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263028662] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:35:16,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:35:16,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-10 02:35:16,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794694622] [2025-01-10 02:35:16,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:35:16,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-10 02:35:16,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:35:16,919 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-10 02:35:16,919 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-01-10 02:35:16,919 INFO L87 Difference]: Start difference. First operand 174 states and 183 transitions. Second operand has 7 states, 5 states have (on average 2.6) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-10 02:35:17,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:35:17,009 INFO L93 Difference]: Finished difference Result 174 states and 183 transitions. [2025-01-10 02:35:17,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-10 02:35:17,010 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (2), 1 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 17 [2025-01-10 02:35:17,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:35:17,011 INFO L225 Difference]: With dead ends: 174 [2025-01-10 02:35:17,011 INFO L226 Difference]: Without dead ends: 173 [2025-01-10 02:35:17,011 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-01-10 02:35:17,012 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 24 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-10 02:35:17,012 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 945 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-10 02:35:17,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2025-01-10 02:35:17,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2025-01-10 02:35:17,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 94 states have (on average 1.6595744680851063) internal successors, (156), 156 states have internal predecessors, (156), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2025-01-10 02:35:17,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 182 transitions. [2025-01-10 02:35:17,032 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 182 transitions. Word has length 17 [2025-01-10 02:35:17,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:35:17,033 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 182 transitions. [2025-01-10 02:35:17,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-10 02:35:17,033 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 182 transitions. [2025-01-10 02:35:17,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-01-10 02:35:17,034 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:35:17,034 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:35:17,046 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 [2025-01-10 02:35:17,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:17,235 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_39_to_65_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_39_to_65_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2025-01-10 02:35:17,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:35:17,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1583352828, now seen corresponding path program 1 times [2025-01-10 02:35:17,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:35:17,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329211153] [2025-01-10 02:35:17,236 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:17,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:35:17,262 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-10 02:35:17,277 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-10 02:35:17,277 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:17,277 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-10 02:35:17,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1741404935] [2025-01-10 02:35:17,278 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:17,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:17,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:35:17,280 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:35:17,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-10 02:35:17,347 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-10 02:35:17,377 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-10 02:35:17,377 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:17,377 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:35:17,378 INFO L256 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-10 02:35:17,379 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:35:17,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-10 02:35:17,529 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-10 02:35:17,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 28 [2025-01-10 02:35:17,555 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 02:35:17,555 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 02:35:17,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:35:17,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329211153] [2025-01-10 02:35:17,555 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-10 02:35:17,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741404935] [2025-01-10 02:35:17,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741404935] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:35:17,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:35:17,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-01-10 02:35:17,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247098204] [2025-01-10 02:35:17,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:35:17,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-10 02:35:17,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:35:17,557 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-10 02:35:17,557 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-01-10 02:35:17,557 INFO L87 Difference]: Start difference. First operand 173 states and 182 transitions. Second operand has 9 states, 7 states have (on average 2.0) internal successors, (14), 9 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-10 02:35:17,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:35:17,855 INFO L93 Difference]: Finished difference Result 173 states and 182 transitions. [2025-01-10 02:35:17,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-10 02:35:17,855 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.0) internal successors, (14), 9 states have internal predecessors, (14), 2 states have call successors, (2), 1 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 18 [2025-01-10 02:35:17,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:35:17,857 INFO L225 Difference]: With dead ends: 173 [2025-01-10 02:35:17,857 INFO L226 Difference]: Without dead ends: 172 [2025-01-10 02:35:17,857 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2025-01-10 02:35:17,858 INFO L435 NwaCegarLoop]: 160 mSDtfsCounter, 204 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-10 02:35:17,858 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 731 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-10 02:35:17,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2025-01-10 02:35:17,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2025-01-10 02:35:17,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 94 states have (on average 1.648936170212766) internal successors, (155), 155 states have internal predecessors, (155), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2025-01-10 02:35:17,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 181 transitions. [2025-01-10 02:35:17,876 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 181 transitions. Word has length 18 [2025-01-10 02:35:17,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:35:17,877 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 181 transitions. [2025-01-10 02:35:17,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.0) internal successors, (14), 9 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-10 02:35:17,877 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 181 transitions. [2025-01-10 02:35:17,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-01-10 02:35:17,878 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:35:17,878 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:35:17,886 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 [2025-01-10 02:35:18,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:18,079 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_45_to_53_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_39_to_65_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_39_to_65_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2025-01-10 02:35:18,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:35:18,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1143096871, now seen corresponding path program 1 times [2025-01-10 02:35:18,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:35:18,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147412633] [2025-01-10 02:35:18,079 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:18,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:35:18,118 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-01-10 02:35:18,161 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-01-10 02:35:18,161 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:18,161 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-10 02:35:18,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1523627420] [2025-01-10 02:35:18,167 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:18,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:18,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:35:18,170 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:35:18,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-01-10 02:35:18,251 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-01-10 02:35:18,297 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-01-10 02:35:18,297 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:18,297 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:35:18,302 INFO L256 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-01-10 02:35:18,305 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:35:18,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-10 02:35:18,333 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-01-10 02:35:18,333 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 02:35:18,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:35:18,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147412633] [2025-01-10 02:35:18,334 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-10 02:35:18,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523627420] [2025-01-10 02:35:18,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523627420] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 02:35:18,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 02:35:18,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-10 02:35:18,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973793365] [2025-01-10 02:35:18,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 02:35:18,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 02:35:18,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:35:18,335 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 02:35:18,335 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-10 02:35:18,335 INFO L87 Difference]: Start difference. First operand 172 states and 181 transitions. Second operand has 6 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-01-10 02:35:18,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:35:18,458 INFO L93 Difference]: Finished difference Result 283 states and 298 transitions. [2025-01-10 02:35:18,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 02:35:18,458 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 38 [2025-01-10 02:35:18,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:35:18,461 INFO L225 Difference]: With dead ends: 283 [2025-01-10 02:35:18,461 INFO L226 Difference]: Without dead ends: 281 [2025-01-10 02:35:18,462 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-01-10 02:35:18,463 INFO L435 NwaCegarLoop]: 165 mSDtfsCounter, 192 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-10 02:35:18,465 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 803 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-10 02:35:18,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2025-01-10 02:35:18,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 221. [2025-01-10 02:35:18,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 138 states have (on average 1.6956521739130435) internal successors, (234), 199 states have internal predecessors, (234), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2025-01-10 02:35:18,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 269 transitions. [2025-01-10 02:35:18,481 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 269 transitions. Word has length 38 [2025-01-10 02:35:18,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:35:18,481 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 269 transitions. [2025-01-10 02:35:18,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-01-10 02:35:18,482 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 269 transitions. [2025-01-10 02:35:18,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-01-10 02:35:18,482 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:35:18,482 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:35:18,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-01-10 02:35:18,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-01-10 02:35:18,683 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_39_to_65_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_39_to_65_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2025-01-10 02:35:18,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:35:18,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1149019582, now seen corresponding path program 1 times [2025-01-10 02:35:18,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:35:18,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046626591] [2025-01-10 02:35:18,684 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:18,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:35:18,699 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-01-10 02:35:18,721 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-01-10 02:35:18,722 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:18,722 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:35:19,113 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-01-10 02:35:19,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 02:35:19,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046626591] [2025-01-10 02:35:19,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046626591] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 02:35:19,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825959660] [2025-01-10 02:35:19,114 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:19,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:19,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 02:35:19,116 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 02:35:19,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-01-10 02:35:19,191 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-01-10 02:35:19,221 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-01-10 02:35:19,221 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:19,221 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 02:35:19,227 INFO L256 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-01-10 02:35:19,228 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 02:35:19,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-01-10 02:35:19,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-10 02:35:19,383 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-10 02:35:19,383 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 02:35:19,624 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-01-10 02:35:19,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825959660] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 02:35:19,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 02:35:19,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 11] total 24 [2025-01-10 02:35:19,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101788550] [2025-01-10 02:35:19,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 02:35:19,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-01-10 02:35:19,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 02:35:19,626 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-01-10 02:35:19,627 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2025-01-10 02:35:19,627 INFO L87 Difference]: Start difference. First operand 221 states and 269 transitions. Second operand has 24 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 20 states have internal predecessors, (44), 6 states have call successors, (13), 4 states have call predecessors, (13), 7 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2025-01-10 02:35:25,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 02:35:29,131 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 02:35:33,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 02:35:37,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 02:35:41,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 02:35:41,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 02:35:41,457 INFO L93 Difference]: Finished difference Result 412 states and 503 transitions. [2025-01-10 02:35:41,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-01-10 02:35:41,457 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 20 states have internal predecessors, (44), 6 states have call successors, (13), 4 states have call predecessors, (13), 7 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 38 [2025-01-10 02:35:41,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 02:35:41,459 INFO L225 Difference]: With dead ends: 412 [2025-01-10 02:35:41,459 INFO L226 Difference]: Without dead ends: 379 [2025-01-10 02:35:41,460 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 59 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=187, Invalid=1145, Unknown=0, NotChecked=0, Total=1332 [2025-01-10 02:35:41,460 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 508 mSDsluCounter, 736 mSDsCounter, 0 mSdLazyCounter, 2373 mSolverCounterSat, 65 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 2444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 2373 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.6s IncrementalHoareTripleChecker+Time [2025-01-10 02:35:41,460 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [515 Valid, 795 Invalid, 2444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 2373 Invalid, 6 Unknown, 0 Unchecked, 21.6s Time] [2025-01-10 02:35:41,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2025-01-10 02:35:41,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 338. [2025-01-10 02:35:41,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 240 states have (on average 1.7166666666666666) internal successors, (412), 302 states have internal predecessors, (412), 27 states have call successors, (27), 11 states have call predecessors, (27), 11 states have return successors, (30), 26 states have call predecessors, (30), 27 states have call successors, (30) [2025-01-10 02:35:41,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 469 transitions. [2025-01-10 02:35:41,475 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 469 transitions. Word has length 38 [2025-01-10 02:35:41,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 02:35:41,475 INFO L471 AbstractCegarLoop]: Abstraction has 338 states and 469 transitions. [2025-01-10 02:35:41,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 20 states have internal predecessors, (44), 6 states have call successors, (13), 4 states have call predecessors, (13), 7 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2025-01-10 02:35:41,475 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 469 transitions. [2025-01-10 02:35:41,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2025-01-10 02:35:41,476 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 02:35:41,476 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 02:35:41,483 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 [2025-01-10 02:35:41,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 02:35:41,680 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_45_to_53_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_39_to_65_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_39_to_65_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2025-01-10 02:35:41,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 02:35:41,681 INFO L85 PathProgramCache]: Analyzing trace with hash 995537179, now seen corresponding path program 1 times [2025-01-10 02:35:41,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 02:35:41,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562739137] [2025-01-10 02:35:41,681 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 02:35:41,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 02:35:41,693 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-01-10 02:35:41,704 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-01-10 02:35:41,704 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 02:35:41,704 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat