./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_geo3-ll2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursified_nla-digbench/recursified_geo3-ll2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 d611551bdd81171138955e09eec2c35a3c053022d643f86b25023a5ba282a01a --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 15:48:35,282 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 15:48:35,330 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-17 15:48:35,333 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 15:48:35,333 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 15:48:35,352 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 15:48:35,353 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 15:48:35,353 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 15:48:35,353 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 15:48:35,353 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 15:48:35,353 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 15:48:35,353 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 15:48:35,353 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 15:48:35,353 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 15:48:35,353 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 15:48:35,353 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 15:48:35,353 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 15:48:35,353 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 15:48:35,354 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 15:48:35,354 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 15:48:35,354 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 15:48:35,354 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 15:48:35,354 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 15:48:35,354 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 15:48:35,354 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-17 15:48:35,354 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 15:48:35,354 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 15:48:35,354 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 15:48:35,354 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 15:48:35,354 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 15:48:35,354 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 15:48:35,354 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 15:48:35,354 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 15:48:35,354 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 15:48:35,356 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 15:48:35,356 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 15:48:35,356 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 15:48:35,356 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 15:48:35,356 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 15:48:35,356 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 15:48:35,356 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 15:48:35,356 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 15:48:35,356 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 15:48:35,356 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 15:48:35,356 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 15:48:35,356 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/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 -> d611551bdd81171138955e09eec2c35a3c053022d643f86b25023a5ba282a01a [2025-03-17 15:48:35,557 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 15:48:35,562 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 15:48:35,565 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 15:48:35,566 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 15:48:35,566 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 15:48:35,567 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_nla-digbench/recursified_geo3-ll2.c [2025-03-17 15:48:36,684 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbc2dd3a5/4356d87184da4ca8a085efe105d6c9a0/FLAGf021bf8cb [2025-03-17 15:48:36,901 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 15:48:36,901 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_geo3-ll2.c [2025-03-17 15:48:36,915 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbc2dd3a5/4356d87184da4ca8a085efe105d6c9a0/FLAGf021bf8cb [2025-03-17 15:48:36,953 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbc2dd3a5/4356d87184da4ca8a085efe105d6c9a0 [2025-03-17 15:48:36,956 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 15:48:36,958 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 15:48:36,959 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 15:48:36,959 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 15:48:36,962 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 15:48:36,963 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 03:48:36" (1/1) ... [2025-03-17 15:48:36,963 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f2a5de1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:48:36, skipping insertion in model container [2025-03-17 15:48:36,965 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 03:48:36" (1/1) ... [2025-03-17 15:48:36,976 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 15:48:37,097 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 15:48:37,109 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 15:48:37,127 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 15:48:37,138 INFO L204 MainTranslator]: Completed translation [2025-03-17 15:48:37,139 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:48:37 WrapperNode [2025-03-17 15:48:37,139 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 15:48:37,140 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 15:48:37,140 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 15:48:37,140 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 15:48:37,144 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:48:37" (1/1) ... [2025-03-17 15:48:37,149 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:48:37" (1/1) ... [2025-03-17 15:48:37,160 INFO L138 Inliner]: procedures = 16, calls = 67, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 103 [2025-03-17 15:48:37,161 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 15:48:37,161 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 15:48:37,162 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 15:48:37,162 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 15:48:37,167 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:48:37" (1/1) ... [2025-03-17 15:48:37,167 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:48:37" (1/1) ... [2025-03-17 15:48:37,169 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:48:37" (1/1) ... [2025-03-17 15:48:37,180 INFO L175 MemorySlicer]: Split 36 memory accesses to 8 slices as follows [2, 6, 3, 4, 8, 5, 6, 2]. 22 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0, 0]. The 10 writes are split as follows [0, 1, 1, 2, 2, 2, 1, 1]. [2025-03-17 15:48:37,180 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:48:37" (1/1) ... [2025-03-17 15:48:37,180 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:48:37" (1/1) ... [2025-03-17 15:48:37,185 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:48:37" (1/1) ... [2025-03-17 15:48:37,185 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:48:37" (1/1) ... [2025-03-17 15:48:37,186 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:48:37" (1/1) ... [2025-03-17 15:48:37,187 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:48:37" (1/1) ... [2025-03-17 15:48:37,192 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 15:48:37,192 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 15:48:37,192 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 15:48:37,192 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 15:48:37,193 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:48:37" (1/1) ... [2025-03-17 15:48:37,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 15:48:37,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 15:48:37,220 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 15:48:37,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 15:48:37,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 15:48:37,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 15:48:37,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 15:48:37,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-17 15:48:37,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-17 15:48:37,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-17 15:48:37,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-17 15:48:37,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-17 15:48:37,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-17 15:48:37,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 15:48:37,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 15:48:37,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 15:48:37,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-17 15:48:37,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-17 15:48:37,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-17 15:48:37,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-03-17 15:48:37,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-03-17 15:48:37,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2025-03-17 15:48:37,237 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_30_to_38_0 [2025-03-17 15:48:37,237 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_30_to_38_0 [2025-03-17 15:48:37,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 15:48:37,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 15:48:37,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 15:48:37,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 15:48:37,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-17 15:48:37,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-17 15:48:37,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-17 15:48:37,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-03-17 15:48:37,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-03-17 15:48:37,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2025-03-17 15:48:37,238 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-17 15:48:37,238 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-17 15:48:37,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 15:48:37,327 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 15:48:37,329 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 15:48:37,565 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L93: havoc main_#t~mem30#1;call ULTIMATE.dealloc(main_~#z~0#1.base, main_~#z~0#1.offset);havoc main_~#z~0#1.base, main_~#z~0#1.offset;call ULTIMATE.dealloc(main_~#a~0#1.base, main_~#a~0#1.offset);havoc main_~#a~0#1.base, main_~#a~0#1.offset;call ULTIMATE.dealloc(main_~#k~0#1.base, main_~#k~0#1.offset);havoc main_~#k~0#1.base, main_~#k~0#1.offset;call ULTIMATE.dealloc(main_~#x~0#1.base, main_~#x~0#1.offset);havoc main_~#x~0#1.base, main_~#x~0#1.offset;call ULTIMATE.dealloc(main_~#y~0#1.base, main_~#y~0#1.offset);havoc main_~#y~0#1.base, main_~#y~0#1.offset;call ULTIMATE.dealloc(main_~#c~0#1.base, main_~#c~0#1.offset);havoc main_~#c~0#1.base, main_~#c~0#1.offset;call ULTIMATE.dealloc(main_~#az~0#1.base, main_~#az~0#1.offset);havoc main_~#az~0#1.base, main_~#az~0#1.offset; [2025-03-17 15:48:37,580 INFO L? ?]: Removed 95 outVars from TransFormulas that were not future-live. [2025-03-17 15:48:37,580 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 15:48:37,589 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 15:48:37,589 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 15:48:37,590 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 03:48:37 BoogieIcfgContainer [2025-03-17 15:48:37,590 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 15:48:37,591 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 15:48:37,591 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 15:48:37,595 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 15:48:37,595 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 03:48:36" (1/3) ... [2025-03-17 15:48:37,595 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45d8a691 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 03:48:37, skipping insertion in model container [2025-03-17 15:48:37,595 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:48:37" (2/3) ... [2025-03-17 15:48:37,595 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45d8a691 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 03:48:37, skipping insertion in model container [2025-03-17 15:48:37,595 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 03:48:37" (3/3) ... [2025-03-17 15:48:37,596 INFO L128 eAbstractionObserver]: Analyzing ICFG recursified_geo3-ll2.c [2025-03-17 15:48:37,606 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 15:48:37,607 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG recursified_geo3-ll2.c that has 3 procedures, 80 locations, 1 initial locations, 0 loop locations, and 30 error locations. [2025-03-17 15:48:37,649 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 15:48:37,658 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;@3260881b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 15:48:37,658 INFO L334 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2025-03-17 15:48:37,661 INFO L276 IsEmpty]: Start isEmpty. Operand has 80 states, 43 states have (on average 1.7674418604651163) internal successors, (76), 74 states have internal predecessors, (76), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-03-17 15:48:37,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2025-03-17 15:48:37,664 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 15:48:37,664 INFO L218 NwaCegarLoop]: trace histogram [1, 1] [2025-03-17 15:48:37,665 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2025-03-17 15:48:37,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 15:48:37,668 INFO L85 PathProgramCache]: Analyzing trace with hash 3456, now seen corresponding path program 1 times [2025-03-17 15:48:37,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 15:48:37,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966052064] [2025-03-17 15:48:37,672 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 15:48:37,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 15:48:37,726 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-17 15:48:37,767 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-17 15:48:37,768 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 15:48:37,768 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-17 15:48:37,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1089069924] [2025-03-17 15:48:37,773 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 15:48:37,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:48:37,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 15:48:37,776 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 15:48:37,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 15:48:37,840 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-17 15:48:37,870 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-17 15:48:37,870 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 15:48:37,871 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:48:37,875 INFO L256 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-17 15:48:37,879 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 15:48:37,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 15:48:37,980 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 15:48:37,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 15:48:37,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966052064] [2025-03-17 15:48:37,981 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-17 15:48:37,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089069924] [2025-03-17 15:48:37,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089069924] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 15:48:37,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 15:48:37,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 15:48:37,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055614091] [2025-03-17 15:48:37,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 15:48:37,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 15:48:37,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 15:48:38,000 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 15:48:38,001 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 15:48:38,002 INFO L87 Difference]: Start difference. First operand has 80 states, 43 states have (on average 1.7674418604651163) internal successors, (76), 74 states have internal predecessors, (76), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 15:48:38,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 15:48:38,032 INFO L93 Difference]: Finished difference Result 154 states and 165 transitions. [2025-03-17 15:48:38,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 15:48:38,035 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2025-03-17 15:48:38,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 15:48:38,039 INFO L225 Difference]: With dead ends: 154 [2025-03-17 15:48:38,040 INFO L226 Difference]: Without dead ends: 73 [2025-03-17 15:48:38,041 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 15:48:38,044 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 1 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 15:48:38,044 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 154 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 15:48:38,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2025-03-17 15:48:38,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2025-03-17 15:48:38,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 40 states have (on average 1.7) internal successors, (68), 68 states have internal predecessors, (68), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 15:48:38,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2025-03-17 15:48:38,071 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 2 [2025-03-17 15:48:38,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 15:48:38,072 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2025-03-17 15:48:38,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 15:48:38,073 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2025-03-17 15:48:38,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-17 15:48:38,073 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 15:48:38,073 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-17 15:48:38,080 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-17 15:48:38,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-17 15:48:38,274 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_30_to_38_0Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2025-03-17 15:48:38,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 15:48:38,275 INFO L85 PathProgramCache]: Analyzing trace with hash 200535261, now seen corresponding path program 1 times [2025-03-17 15:48:38,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 15:48:38,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523721462] [2025-03-17 15:48:38,275 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 15:48:38,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 15:48:38,297 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 15:48:38,332 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 15:48:38,334 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 15:48:38,334 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-17 15:48:38,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [220797831] [2025-03-17 15:48:38,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 15:48:38,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:48:38,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 15:48:38,339 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 15:48:38,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 15:48:38,403 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 15:48:38,440 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 15:48:38,440 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 15:48:38,440 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:48:38,441 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-03-17 15:48:38,444 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 15:48:38,467 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 [2025-03-17 15:48:38,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2025-03-17 15:48:38,478 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 [2025-03-17 15:48:38,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2025-03-17 15:48:38,546 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 [2025-03-17 15:48:38,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 15:48:38,557 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 15:48:38,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 15:48:38,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523721462] [2025-03-17 15:48:38,557 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-17 15:48:38,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220797831] [2025-03-17 15:48:38,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220797831] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 15:48:38,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 15:48:38,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 15:48:38,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654562222] [2025-03-17 15:48:38,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 15:48:38,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 15:48:38,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 15:48:38,559 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 15:48:38,559 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-17 15:48:38,559 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 15:48:38,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 15:48:38,800 INFO L93 Difference]: Finished difference Result 113 states and 116 transitions. [2025-03-17 15:48:38,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 15:48:38,801 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.0) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-03-17 15:48:38,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 15:48:38,801 INFO L225 Difference]: With dead ends: 113 [2025-03-17 15:48:38,801 INFO L226 Difference]: Without dead ends: 112 [2025-03-17 15:48:38,802 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2025-03-17 15:48:38,802 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 95 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 15:48:38,802 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 282 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 15:48:38,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2025-03-17 15:48:38,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 90. [2025-03-17 15:48:38,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 55 states have (on average 1.690909090909091) internal successors, (93), 83 states have internal predecessors, (93), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2025-03-17 15:48:38,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 102 transitions. [2025-03-17 15:48:38,809 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 102 transitions. Word has length 7 [2025-03-17 15:48:38,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 15:48:38,809 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 102 transitions. [2025-03-17 15:48:38,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.0) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 15:48:38,809 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 102 transitions. [2025-03-17 15:48:38,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-17 15:48:38,810 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 15:48:38,810 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 15:48:38,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-17 15:48:39,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2025-03-17 15:48:39,014 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_30_to_38_0Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2025-03-17 15:48:39,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 15:48:39,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1921625804, now seen corresponding path program 1 times [2025-03-17 15:48:39,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 15:48:39,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948363194] [2025-03-17 15:48:39,015 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 15:48:39,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 15:48:39,026 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 15:48:39,039 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 15:48:39,039 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 15:48:39,039 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-17 15:48:39,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [352605890] [2025-03-17 15:48:39,040 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 15:48:39,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:48:39,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 15:48:39,042 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 15:48:39,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 15:48:39,093 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 15:48:39,119 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 15:48:39,119 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 15:48:39,119 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:48:39,120 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-03-17 15:48:39,122 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 15:48:39,135 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 [2025-03-17 15:48:39,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2025-03-17 15:48:39,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-03-17 15:48:39,321 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 21 treesize of output 13 [2025-03-17 15:48:39,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2025-03-17 15:48:39,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 15:48:39,375 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 15:48:39,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 15:48:39,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948363194] [2025-03-17 15:48:39,375 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-17 15:48:39,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352605890] [2025-03-17 15:48:39,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352605890] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 15:48:39,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 15:48:39,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 15:48:39,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395509863] [2025-03-17 15:48:39,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 15:48:39,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 15:48:39,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 15:48:39,376 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 15:48:39,376 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-17 15:48:39,376 INFO L87 Difference]: Start difference. First operand 90 states and 102 transitions. Second operand has 7 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 15:48:40,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 15:48:40,118 INFO L93 Difference]: Finished difference Result 112 states and 115 transitions. [2025-03-17 15:48:40,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 15:48:40,119 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-03-17 15:48:40,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 15:48:40,119 INFO L225 Difference]: With dead ends: 112 [2025-03-17 15:48:40,119 INFO L226 Difference]: Without dead ends: 111 [2025-03-17 15:48:40,120 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2025-03-17 15:48:40,120 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 91 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-17 15:48:40,120 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 287 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-17 15:48:40,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2025-03-17 15:48:40,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 90. [2025-03-17 15:48:40,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 55 states have (on average 1.6727272727272726) internal successors, (92), 83 states have internal predecessors, (92), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2025-03-17 15:48:40,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 101 transitions. [2025-03-17 15:48:40,126 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 101 transitions. Word has length 8 [2025-03-17 15:48:40,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 15:48:40,126 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 101 transitions. [2025-03-17 15:48:40,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 15:48:40,126 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 101 transitions. [2025-03-17 15:48:40,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-17 15:48:40,126 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 15:48:40,126 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 15:48:40,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-17 15:48:40,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:48:40,327 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_30_to_38_0Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2025-03-17 15:48:40,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 15:48:40,327 INFO L85 PathProgramCache]: Analyzing trace with hash -559142213, now seen corresponding path program 1 times [2025-03-17 15:48:40,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 15:48:40,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416762776] [2025-03-17 15:48:40,328 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 15:48:40,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 15:48:40,336 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 15:48:40,362 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 15:48:40,362 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 15:48:40,363 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-17 15:48:40,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [80473363] [2025-03-17 15:48:40,367 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 15:48:40,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:48:40,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 15:48:40,370 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 15:48:40,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 15:48:40,436 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 15:48:40,454 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 15:48:40,454 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 15:48:40,454 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:48:40,455 INFO L256 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 35 conjuncts are in the unsatisfiable core [2025-03-17 15:48:40,456 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 15:48:40,480 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 [2025-03-17 15:48:40,486 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 [2025-03-17 15:48:40,553 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 24 treesize of output 12 [2025-03-17 15:48:40,613 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 31 treesize of output 15 [2025-03-17 15:48:40,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 15:48:40,632 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 15:48:40,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 15:48:40,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416762776] [2025-03-17 15:48:40,632 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-17 15:48:40,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80473363] [2025-03-17 15:48:40,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80473363] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 15:48:40,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 15:48:40,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 15:48:40,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854458283] [2025-03-17 15:48:40,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 15:48:40,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 15:48:40,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 15:48:40,633 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 15:48:40,633 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-17 15:48:40,633 INFO L87 Difference]: Start difference. First operand 90 states and 101 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 15:48:40,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 15:48:40,822 INFO L93 Difference]: Finished difference Result 111 states and 114 transitions. [2025-03-17 15:48:40,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 15:48:40,823 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-03-17 15:48:40,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 15:48:40,823 INFO L225 Difference]: With dead ends: 111 [2025-03-17 15:48:40,823 INFO L226 Difference]: Without dead ends: 109 [2025-03-17 15:48:40,824 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2025-03-17 15:48:40,824 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 86 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 15:48:40,824 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 328 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 15:48:40,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2025-03-17 15:48:40,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 90. [2025-03-17 15:48:40,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 55 states have (on average 1.6363636363636365) internal successors, (90), 83 states have internal predecessors, (90), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2025-03-17 15:48:40,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2025-03-17 15:48:40,830 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 9 [2025-03-17 15:48:40,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 15:48:40,830 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2025-03-17 15:48:40,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 15:48:40,831 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2025-03-17 15:48:40,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-03-17 15:48:40,831 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 15:48:40,831 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 15:48:40,837 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-17 15:48:41,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:48:41,032 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_30_to_38_0Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2025-03-17 15:48:41,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 15:48:41,032 INFO L85 PathProgramCache]: Analyzing trace with hash -464754535, now seen corresponding path program 1 times [2025-03-17 15:48:41,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 15:48:41,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197832704] [2025-03-17 15:48:41,032 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 15:48:41,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 15:48:41,041 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 15:48:41,056 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 15:48:41,056 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 15:48:41,056 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat