./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_cohendiv-ll.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_cohendiv-ll.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 7c6261a52ba91bad3864c182e4633afd262bc5fe07cf18f92cb66db83623b9ae --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 15:47:33,257 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 15:47:33,310 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-17 15:47:33,316 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 15:47:33,316 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 15:47:33,332 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 15:47:33,334 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 15:47:33,334 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 15:47:33,334 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 15:47:33,334 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 15:47:33,335 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 15:47:33,335 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 15:47:33,335 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 15:47:33,335 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 15:47:33,336 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 15:47:33,336 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 15:47:33,336 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 15:47:33,336 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 15:47:33,336 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 15:47:33,336 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 15:47:33,336 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 15:47:33,336 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 15:47:33,336 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 15:47:33,336 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 15:47:33,336 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-17 15:47:33,336 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 15:47:33,337 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 15:47:33,337 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 15:47:33,337 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 15:47:33,337 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 15:47:33,337 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 15:47:33,337 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 15:47:33,337 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 15:47:33,337 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 15:47:33,338 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 15:47:33,338 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 15:47:33,338 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 15:47:33,338 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 15:47:33,338 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 15:47:33,338 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 15:47:33,338 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 15:47:33,338 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 15:47:33,338 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 15:47:33,338 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 15:47:33,338 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 15:47:33,339 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 -> 7c6261a52ba91bad3864c182e4633afd262bc5fe07cf18f92cb66db83623b9ae [2025-03-17 15:47:33,553 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 15:47:33,561 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 15:47:33,563 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 15:47:33,564 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 15:47:33,565 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 15:47:33,566 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_nla-digbench/recursified_cohendiv-ll.c [2025-03-17 15:47:34,742 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78acd38bc/282aa39db34f48fb8b447d63c4c99033/FLAG6dda1befe [2025-03-17 15:47:34,987 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 15:47:34,987 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_cohendiv-ll.c [2025-03-17 15:47:35,007 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78acd38bc/282aa39db34f48fb8b447d63c4c99033/FLAG6dda1befe [2025-03-17 15:47:35,309 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78acd38bc/282aa39db34f48fb8b447d63c4c99033 [2025-03-17 15:47:35,311 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 15:47:35,313 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 15:47:35,315 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 15:47:35,315 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 15:47:35,318 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 15:47:35,318 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 03:47:35" (1/1) ... [2025-03-17 15:47:35,320 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ad3d11c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:47:35, skipping insertion in model container [2025-03-17 15:47:35,320 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 03:47:35" (1/1) ... [2025-03-17 15:47:35,332 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 15:47:35,430 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 15:47:35,437 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 15:47:35,451 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 15:47:35,459 INFO L204 MainTranslator]: Completed translation [2025-03-17 15:47:35,460 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:47:35 WrapperNode [2025-03-17 15:47:35,460 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 15:47:35,461 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 15:47:35,461 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 15:47:35,461 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 15:47:35,465 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:47:35" (1/1) ... [2025-03-17 15:47:35,469 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:47:35" (1/1) ... [2025-03-17 15:47:35,480 INFO L138 Inliner]: procedures = 17, calls = 85, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 81 [2025-03-17 15:47:35,480 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 15:47:35,481 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 15:47:35,481 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 15:47:35,481 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 15:47:35,486 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:47:35" (1/1) ... [2025-03-17 15:47:35,487 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:47:35" (1/1) ... [2025-03-17 15:47:35,488 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:47:35" (1/1) ... [2025-03-17 15:47:35,504 INFO L175 MemorySlicer]: Split 49 memory accesses to 7 slices as follows [2, 10, 5, 10, 8, 6, 8]. 20 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0]. The 12 writes are split as follows [0, 1, 1, 2, 3, 2, 3]. [2025-03-17 15:47:35,505 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:47:35" (1/1) ... [2025-03-17 15:47:35,505 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:47:35" (1/1) ... [2025-03-17 15:47:35,513 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:47:35" (1/1) ... [2025-03-17 15:47:35,513 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:47:35" (1/1) ... [2025-03-17 15:47:35,514 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:47:35" (1/1) ... [2025-03-17 15:47:35,521 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:47:35" (1/1) ... [2025-03-17 15:47:35,523 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 15:47:35,525 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 15:47:35,525 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 15:47:35,525 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 15:47:35,526 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:47:35" (1/1) ... [2025-03-17 15:47:35,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 15:47:35,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 15:47:35,550 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 15:47:35,552 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 15:47:35,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 15:47:35,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 15:47:35,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 15:47:35,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-17 15:47:35,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-17 15:47:35,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-17 15:47:35,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-17 15:47:35,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-17 15:47:35,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 15:47:35,568 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_41_to_52_0 [2025-03-17 15:47:35,568 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_41_to_52_0 [2025-03-17 15:47:35,568 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_32_to_55_0 [2025-03-17 15:47:35,568 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_32_to_55_0 [2025-03-17 15:47:35,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 15:47:35,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 15:47:35,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-17 15:47:35,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-17 15:47:35,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-17 15:47:35,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-03-17 15:47:35,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-03-17 15:47:35,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 15:47:35,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 15:47:35,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 15:47:35,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 15:47:35,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-17 15:47:35,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-17 15:47:35,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-17 15:47:35,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-03-17 15:47:35,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-03-17 15:47:35,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-17 15:47:35,569 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-17 15:47:35,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 15:47:35,656 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 15:47:35,657 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 15:47:35,947 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L106: 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_~#q~0#1.base, main_~#q~0#1.offset);havoc main_~#q~0#1.base, main_~#q~0#1.offset;call ULTIMATE.dealloc(main_~#r~0#1.base, main_~#r~0#1.offset);havoc main_~#r~0#1.base, main_~#r~0#1.offset;call ULTIMATE.dealloc(main_~#a~0#1.base, main_~#a~0#1.offset);havoc main_~#a~0#1.base, main_~#a~0#1.offset;call ULTIMATE.dealloc(main_~#b~0#1.base, main_~#b~0#1.offset);havoc main_~#b~0#1.base, main_~#b~0#1.offset; [2025-03-17 15:47:35,978 INFO L? ?]: Removed 68 outVars from TransFormulas that were not future-live. [2025-03-17 15:47:35,978 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 15:47:35,988 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 15:47:35,989 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 15:47:35,990 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 03:47:35 BoogieIcfgContainer [2025-03-17 15:47:35,990 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 15:47:35,991 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 15:47:35,991 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 15:47:35,994 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 15:47:35,994 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 03:47:35" (1/3) ... [2025-03-17 15:47:35,995 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@162d39e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 03:47:35, skipping insertion in model container [2025-03-17 15:47:35,995 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:47:35" (2/3) ... [2025-03-17 15:47:35,995 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@162d39e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 03:47:35, skipping insertion in model container [2025-03-17 15:47:35,995 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 03:47:35" (3/3) ... [2025-03-17 15:47:35,996 INFO L128 eAbstractionObserver]: Analyzing ICFG recursified_cohendiv-ll.c [2025-03-17 15:47:36,007 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 15:47:36,008 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG recursified_cohendiv-ll.c that has 4 procedures, 100 locations, 1 initial locations, 0 loop locations, and 30 error locations. [2025-03-17 15:47:36,046 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 15:47:36,052 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;@4428750e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 15:47:36,053 INFO L334 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2025-03-17 15:47:36,055 INFO L276 IsEmpty]: Start isEmpty. Operand has 100 states, 55 states have (on average 1.6545454545454545) internal successors, (91), 87 states have internal predecessors, (91), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2025-03-17 15:47:36,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-17 15:47:36,059 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 15:47:36,060 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-17 15:47:36,060 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_32_to_55_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_32_to_55_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_32_to_55_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2025-03-17 15:47:36,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 15:47:36,064 INFO L85 PathProgramCache]: Analyzing trace with hash 737094916, now seen corresponding path program 1 times [2025-03-17 15:47:36,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 15:47:36,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552508162] [2025-03-17 15:47:36,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 15:47:36,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 15:47:36,122 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 15:47:36,150 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 15:47:36,150 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 15:47:36,150 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:47:36,204 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 15:47:36,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 15:47:36,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552508162] [2025-03-17 15:47:36,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552508162] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 15:47:36,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 15:47:36,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 15:47:36,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856028495] [2025-03-17 15:47:36,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 15:47:36,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 15:47:36,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 15:47:36,221 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 15:47:36,222 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 15:47:36,223 INFO L87 Difference]: Start difference. First operand has 100 states, 55 states have (on average 1.6545454545454545) internal successors, (91), 87 states have internal predecessors, (91), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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 15:47:36,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 15:47:36,239 INFO L93 Difference]: Finished difference Result 198 states and 234 transitions. [2025-03-17 15:47:36,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 15:47:36,240 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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 15:47:36,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 15:47:36,244 INFO L225 Difference]: With dead ends: 198 [2025-03-17 15:47:36,244 INFO L226 Difference]: Without dead ends: 95 [2025-03-17 15:47:36,246 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 15:47:36,248 INFO L435 NwaCegarLoop]: 109 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, 109 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 [2025-03-17 15:47:36,248 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 15:47:36,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2025-03-17 15:47:36,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2025-03-17 15:47:36,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 52 states have (on average 1.5961538461538463) internal successors, (83), 83 states have internal predecessors, (83), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2025-03-17 15:47:36,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 103 transitions. [2025-03-17 15:47:36,273 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 103 transitions. Word has length 7 [2025-03-17 15:47:36,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 15:47:36,273 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 103 transitions. [2025-03-17 15:47:36,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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 15:47:36,273 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 103 transitions. [2025-03-17 15:47:36,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-17 15:47:36,274 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 15:47:36,274 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-17 15:47:36,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 15:47:36,274 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_32_to_55_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_32_to_55_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_32_to_55_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2025-03-17 15:47:36,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 15:47:36,274 INFO L85 PathProgramCache]: Analyzing trace with hash 765724067, now seen corresponding path program 1 times [2025-03-17 15:47:36,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 15:47:36,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973035438] [2025-03-17 15:47:36,275 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 15:47:36,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 15:47:36,287 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 15:47:36,314 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 15:47:36,314 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 15:47:36,314 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-17 15:47:36,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1843967897] [2025-03-17 15:47:36,316 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 15:47:36,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:47:36,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 15:47:36,318 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 15:47:36,320 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 15:47:36,392 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 15:47:36,427 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 15:47:36,427 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 15:47:36,427 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:47:36,436 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-03-17 15:47:36,439 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 15:47:36,468 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 15:47:36,517 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 15:47:36,518 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 15:47:36,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 15:47:36,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973035438] [2025-03-17 15:47:36,518 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-17 15:47:36,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843967897] [2025-03-17 15:47:36,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843967897] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 15:47:36,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 15:47:36,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 15:47:36,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371756192] [2025-03-17 15:47:36,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 15:47:36,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 15:47:36,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 15:47:36,520 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 15:47:36,520 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-17 15:47:36,521 INFO L87 Difference]: Start difference. First operand 95 states and 103 transitions. Second operand has 6 states, 4 states have (on average 1.5) 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 15:47:36,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 15:47:36,638 INFO L93 Difference]: Finished difference Result 125 states and 135 transitions. [2025-03-17 15:47:36,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 15:47:36,638 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.5) 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 15:47:36,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 15:47:36,639 INFO L225 Difference]: With dead ends: 125 [2025-03-17 15:47:36,639 INFO L226 Difference]: Without dead ends: 123 [2025-03-17 15:47:36,640 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-03-17 15:47:36,640 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 41 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 15:47:36,641 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 455 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 15:47:36,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2025-03-17 15:47:36,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 110. [2025-03-17 15:47:36,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 64 states have (on average 1.5625) internal successors, (100), 95 states have internal predecessors, (100), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2025-03-17 15:47:36,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 125 transitions. [2025-03-17 15:47:36,653 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 125 transitions. Word has length 7 [2025-03-17 15:47:36,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 15:47:36,653 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 125 transitions. [2025-03-17 15:47:36,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.5) 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 15:47:36,653 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 125 transitions. [2025-03-17 15:47:36,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-03-17 15:47:36,653 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 15:47:36,653 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 15:47:36,660 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 15:47:36,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:47:36,854 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_32_to_55_0Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_32_to_55_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_32_to_55_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2025-03-17 15:47:36,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 15:47:36,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1321267617, now seen corresponding path program 1 times [2025-03-17 15:47:36,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 15:47:36,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748728484] [2025-03-17 15:47:36,855 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 15:47:36,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 15:47:36,866 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-17 15:47:36,892 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-17 15:47:36,894 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 15:47:36,894 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-17 15:47:36,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1461600915] [2025-03-17 15:47:36,898 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 15:47:36,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:47:36,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 15:47:36,900 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 15:47:36,901 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 15:47:36,951 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-17 15:47:36,983 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-17 15:47:36,983 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 15:47:36,983 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:47:36,987 INFO L256 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-17 15:47:36,989 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 15:47:36,997 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 15:47:37,061 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 15:47:37,062 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 15:47:37,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 15:47:37,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748728484] [2025-03-17 15:47:37,062 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-17 15:47:37,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461600915] [2025-03-17 15:47:37,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461600915] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 15:47:37,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 15:47:37,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 15:47:37,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285954382] [2025-03-17 15:47:37,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 15:47:37,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 15:47:37,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 15:47:37,064 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 15:47:37,064 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-17 15:47:37,064 INFO L87 Difference]: Start difference. First operand 110 states and 125 transitions. Second operand has 7 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 15:47:37,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 15:47:37,216 INFO L93 Difference]: Finished difference Result 183 states and 198 transitions. [2025-03-17 15:47:37,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 15:47:37,217 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2025-03-17 15:47:37,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 15:47:37,217 INFO L225 Difference]: With dead ends: 183 [2025-03-17 15:47:37,218 INFO L226 Difference]: Without dead ends: 181 [2025-03-17 15:47:37,218 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2025-03-17 15:47:37,218 INFO L435 NwaCegarLoop]: 87 mSDtfsCounter, 105 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 15:47:37,218 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 470 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 15:47:37,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2025-03-17 15:47:37,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 145. [2025-03-17 15:47:37,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 91 states have (on average 1.5604395604395604) internal successors, (142), 124 states have internal predecessors, (142), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (19), 17 states have call predecessors, (19), 18 states have call successors, (19) [2025-03-17 15:47:37,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 179 transitions. [2025-03-17 15:47:37,233 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 179 transitions. Word has length 15 [2025-03-17 15:47:37,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 15:47:37,233 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 179 transitions. [2025-03-17 15:47:37,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 15:47:37,233 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 179 transitions. [2025-03-17 15:47:37,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-03-17 15:47:37,234 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 15:47:37,234 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 15:47:37,240 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 15:47:37,438 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,SelfDestructingSolverStorable2 [2025-03-17 15:47:37,438 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_32_to_55_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_32_to_55_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_32_to_55_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2025-03-17 15:47:37,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 15:47:37,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1572139389, now seen corresponding path program 1 times [2025-03-17 15:47:37,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 15:47:37,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213782799] [2025-03-17 15:47:37,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 15:47:37,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 15:47:37,448 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-17 15:47:37,463 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 15:47:37,464 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 15:47:37,464 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-17 15:47:37,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [285317740] [2025-03-17 15:47:37,465 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 15:47:37,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:47:37,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 15:47:37,471 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 15:47:37,474 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 15:47:37,529 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-17 15:47:37,555 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 15:47:37,555 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 15:47:37,555 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:47:37,557 INFO L256 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-03-17 15:47:37,560 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 15:47:37,587 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 15:47:37,593 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 15:47:37,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-03-17 15:47:37,620 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 25 treesize of output 17 [2025-03-17 15:47:37,625 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 15:47:37,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2025-03-17 15:47:37,792 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 15:47:37,808 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 15:47:37,808 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 15:47:37,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 15:47:37,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213782799] [2025-03-17 15:47:37,808 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-17 15:47:37,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285317740] [2025-03-17 15:47:37,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285317740] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 15:47:37,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 15:47:37,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-17 15:47:37,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147165787] [2025-03-17 15:47:37,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 15:47:37,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 15:47:37,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 15:47:37,809 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 15:47:37,809 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-03-17 15:47:37,809 INFO L87 Difference]: Start difference. First operand 145 states and 179 transitions. Second operand has 9 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 15:47:41,989 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] [2025-03-17 15:47:42,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 15:47:42,064 INFO L93 Difference]: Finished difference Result 177 states and 192 transitions. [2025-03-17 15:47:42,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 15:47:42,066 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2025-03-17 15:47:42,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 15:47:42,067 INFO L225 Difference]: With dead ends: 177 [2025-03-17 15:47:42,067 INFO L226 Difference]: Without dead ends: 176 [2025-03-17 15:47:42,067 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2025-03-17 15:47:42,068 INFO L435 NwaCegarLoop]: 81 mSDtfsCounter, 97 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2025-03-17 15:47:42,068 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 590 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 212 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2025-03-17 15:47:42,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2025-03-17 15:47:42,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 145. [2025-03-17 15:47:42,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 91 states have (on average 1.5494505494505495) internal successors, (141), 124 states have internal predecessors, (141), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (19), 17 states have call predecessors, (19), 18 states have call successors, (19) [2025-03-17 15:47:42,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 178 transitions. [2025-03-17 15:47:42,078 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 178 transitions. Word has length 17 [2025-03-17 15:47:42,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 15:47:42,079 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 178 transitions. [2025-03-17 15:47:42,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 15:47:42,079 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 178 transitions. [2025-03-17 15:47:42,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-03-17 15:47:42,079 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 15:47:42,079 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 15:47:42,086 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 15:47:42,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:47:42,283 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_32_to_55_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_32_to_55_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_32_to_55_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2025-03-17 15:47:42,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 15:47:42,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1491680790, now seen corresponding path program 1 times [2025-03-17 15:47:42,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 15:47:42,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225049366] [2025-03-17 15:47:42,284 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 15:47:42,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 15:47:42,296 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 15:47:42,311 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 15:47:42,311 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 15:47:42,311 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-17 15:47:42,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1083818632] [2025-03-17 15:47:42,313 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 15:47:42,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:47:42,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 15:47:42,318 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 15:47:42,323 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 15:47:42,387 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 15:47:42,410 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 15:47:42,410 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 15:47:42,411 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:47:42,412 INFO L256 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-03-17 15:47:42,416 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 15:47:42,429 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 15:47:42,431 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 15:47:42,459 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 15:47:42,463 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 15:47:42,471 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 15:47:42,562 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2025-03-17 15:47:42,580 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 [2025-03-17 15:47:42,594 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 15:47:42,594 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 15:47:42,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 15:47:42,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225049366] [2025-03-17 15:47:42,595 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-17 15:47:42,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083818632] [2025-03-17 15:47:42,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083818632] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 15:47:42,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 15:47:42,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-17 15:47:42,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50872711] [2025-03-17 15:47:42,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 15:47:42,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 15:47:42,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 15:47:42,595 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 15:47:42,595 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-03-17 15:47:42,596 INFO L87 Difference]: Start difference. First operand 145 states and 178 transitions. Second operand has 9 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 15:47:46,758 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] [2025-03-17 15:47:46,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 15:47:46,821 INFO L93 Difference]: Finished difference Result 176 states and 191 transitions. [2025-03-17 15:47:46,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 15:47:46,822 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2025-03-17 15:47:46,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 15:47:46,823 INFO L225 Difference]: With dead ends: 176 [2025-03-17 15:47:46,823 INFO L226 Difference]: Without dead ends: 175 [2025-03-17 15:47:46,823 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2025-03-17 15:47:46,824 INFO L435 NwaCegarLoop]: 82 mSDtfsCounter, 94 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2025-03-17 15:47:46,824 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 564 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 203 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2025-03-17 15:47:46,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2025-03-17 15:47:46,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 145. [2025-03-17 15:47:46,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 91 states have (on average 1.5384615384615385) internal successors, (140), 124 states have internal predecessors, (140), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (19), 17 states have call predecessors, (19), 18 states have call successors, (19) [2025-03-17 15:47:46,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 177 transitions. [2025-03-17 15:47:46,837 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 177 transitions. Word has length 18 [2025-03-17 15:47:46,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 15:47:46,837 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 177 transitions. [2025-03-17 15:47:46,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 15:47:46,837 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 177 transitions. [2025-03-17 15:47:46,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-03-17 15:47:46,837 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 15:47:46,838 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 15:47:46,845 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 15:47:47,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:47:47,042 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_41_to_52_0Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_32_to_55_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_32_to_55_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2025-03-17 15:47:47,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 15:47:47,042 INFO L85 PathProgramCache]: Analyzing trace with hash -856799390, now seen corresponding path program 1 times [2025-03-17 15:47:47,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 15:47:47,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543546109] [2025-03-17 15:47:47,042 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 15:47:47,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 15:47:47,054 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-03-17 15:47:47,096 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-03-17 15:47:47,096 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 15:47:47,096 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-17 15:47:47,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1541352926] [2025-03-17 15:47:47,102 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 15:47:47,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:47:47,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 15:47:47,104 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 15:47:47,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-17 15:47:47,160 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-03-17 15:47:47,190 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-03-17 15:47:47,190 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 15:47:47,190 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:47:47,197 INFO L256 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 56 conjuncts are in the unsatisfiable core [2025-03-17 15:47:47,199 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 15:47:47,208 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 15:47:47,314 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 15:47:47,352 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 [2025-03-17 15:47:47,357 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 [2025-03-17 15:47:47,369 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 15:47:47,370 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 15:47:47,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 15:47:47,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543546109] [2025-03-17 15:47:47,370 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-17 15:47:47,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541352926] [2025-03-17 15:47:47,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541352926] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 15:47:47,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 15:47:47,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-17 15:47:47,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49173537] [2025-03-17 15:47:47,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 15:47:47,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 15:47:47,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 15:47:47,371 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 15:47:47,371 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-03-17 15:47:47,372 INFO L87 Difference]: Start difference. First operand 145 states and 177 transitions. Second operand has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 15:47:51,383 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] [2025-03-17 15:47:51,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 15:47:51,663 INFO L93 Difference]: Finished difference Result 223 states and 280 transitions. [2025-03-17 15:47:51,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 15:47:51,664 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 29 [2025-03-17 15:47:51,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 15:47:51,666 INFO L225 Difference]: With dead ends: 223 [2025-03-17 15:47:51,666 INFO L226 Difference]: Without dead ends: 222 [2025-03-17 15:47:51,667 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2025-03-17 15:47:51,667 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 203 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2025-03-17 15:47:51,667 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 515 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 269 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2025-03-17 15:47:51,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2025-03-17 15:47:51,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 183. [2025-03-17 15:47:51,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 121 states have (on average 1.537190082644628) internal successors, (186), 154 states have internal predecessors, (186), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (27), 23 states have call predecessors, (27), 24 states have call successors, (27) [2025-03-17 15:47:51,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 237 transitions. [2025-03-17 15:47:51,689 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 237 transitions. Word has length 29 [2025-03-17 15:47:51,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 15:47:51,690 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 237 transitions. [2025-03-17 15:47:51,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 15:47:51,690 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 237 transitions. [2025-03-17 15:47:51,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-03-17 15:47:51,691 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 15:47:51,691 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 15:47:51,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-17 15:47:51,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:47:51,891 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_32_to_55_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_32_to_55_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2025-03-17 15:47:51,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 15:47:51,892 INFO L85 PathProgramCache]: Analyzing trace with hash -860864837, now seen corresponding path program 1 times [2025-03-17 15:47:51,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 15:47:51,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973622274] [2025-03-17 15:47:51,892 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 15:47:51,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 15:47:51,900 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-03-17 15:47:51,917 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-03-17 15:47:51,917 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 15:47:51,917 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-17 15:47:51,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1363269032] [2025-03-17 15:47:51,918 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 15:47:51,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:47:51,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 15:47:51,920 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 15:47:51,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-17 15:47:51,977 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-03-17 15:47:51,999 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-03-17 15:47:52,000 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 15:47:52,000 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:47:52,002 INFO L256 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 15:47:52,003 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 15:47:52,006 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 15:47:52,039 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 15:47:52,039 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 15:47:52,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 15:47:52,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973622274] [2025-03-17 15:47:52,039 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-17 15:47:52,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363269032] [2025-03-17 15:47:52,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363269032] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 15:47:52,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 15:47:52,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 15:47:52,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418367216] [2025-03-17 15:47:52,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 15:47:52,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 15:47:52,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 15:47:52,040 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 15:47:52,040 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 15:47:52,040 INFO L87 Difference]: Start difference. First operand 183 states and 237 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-17 15:47:52,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 15:47:52,232 INFO L93 Difference]: Finished difference Result 192 states and 247 transitions. [2025-03-17 15:47:52,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 15:47:52,233 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2025-03-17 15:47:52,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 15:47:52,234 INFO L225 Difference]: With dead ends: 192 [2025-03-17 15:47:52,235 INFO L226 Difference]: Without dead ends: 190 [2025-03-17 15:47:52,235 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 15:47:52,235 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 67 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 15:47:52,235 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 103 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 15:47:52,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2025-03-17 15:47:52,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 188. [2025-03-17 15:47:52,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 125 states have (on average 1.52) internal successors, (190), 157 states have internal predecessors, (190), 24 states have call successors, (24), 8 states have call predecessors, (24), 9 states have return successors, (28), 24 states have call predecessors, (28), 24 states have call successors, (28) [2025-03-17 15:47:52,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 242 transitions. [2025-03-17 15:47:52,247 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 242 transitions. Word has length 29 [2025-03-17 15:47:52,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 15:47:52,247 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 242 transitions. [2025-03-17 15:47:52,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-17 15:47:52,247 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 242 transitions. [2025-03-17 15:47:52,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-03-17 15:47:52,248 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 15:47:52,248 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 15:47:52,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-17 15:47:52,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:47:52,452 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_41_to_52_0Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_32_to_55_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_32_to_55_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2025-03-17 15:47:52,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 15:47:52,452 INFO L85 PathProgramCache]: Analyzing trace with hash -790977268, now seen corresponding path program 1 times [2025-03-17 15:47:52,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 15:47:52,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580719045] [2025-03-17 15:47:52,452 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 15:47:52,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 15:47:52,461 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-03-17 15:47:52,489 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-03-17 15:47:52,489 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 15:47:52,489 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-17 15:47:52,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [978440497] [2025-03-17 15:47:52,491 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 15:47:52,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:47:52,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 15:47:52,493 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 15:47:52,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-17 15:47:52,548 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-03-17 15:47:52,578 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-03-17 15:47:52,578 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 15:47:52,578 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:47:52,580 INFO L256 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 61 conjuncts are in the unsatisfiable core [2025-03-17 15:47:52,582 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 15:47:52,592 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-17 15:47:52,775 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 15:47:52,828 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 [2025-03-17 15:47:52,845 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 15:47:52,845 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 15:47:52,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 15:47:52,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580719045] [2025-03-17 15:47:52,845 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-17 15:47:52,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978440497] [2025-03-17 15:47:52,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978440497] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 15:47:52,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 15:47:52,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-17 15:47:52,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580752475] [2025-03-17 15:47:52,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 15:47:52,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 15:47:52,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 15:47:52,846 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 15:47:52,846 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-03-17 15:47:52,846 INFO L87 Difference]: Start difference. First operand 188 states and 242 transitions. Second operand has 11 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 15:47:56,856 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] [2025-03-17 15:47:57,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 15:47:57,155 INFO L93 Difference]: Finished difference Result 227 states and 284 transitions. [2025-03-17 15:47:57,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 15:47:57,155 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2025-03-17 15:47:57,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 15:47:57,156 INFO L225 Difference]: With dead ends: 227 [2025-03-17 15:47:57,156 INFO L226 Difference]: Without dead ends: 226 [2025-03-17 15:47:57,157 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2025-03-17 15:47:57,157 INFO L435 NwaCegarLoop]: 77 mSDtfsCounter, 209 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 30 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2025-03-17 15:47:57,157 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 562 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 293 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2025-03-17 15:47:57,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2025-03-17 15:47:57,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 188. [2025-03-17 15:47:57,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 125 states have (on average 1.504) internal successors, (188), 157 states have internal predecessors, (188), 24 states have call successors, (24), 8 states have call predecessors, (24), 9 states have return successors, (28), 24 states have call predecessors, (28), 24 states have call successors, (28) [2025-03-17 15:47:57,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 240 transitions. [2025-03-17 15:47:57,174 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 240 transitions. Word has length 30 [2025-03-17 15:47:57,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 15:47:57,174 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 240 transitions. [2025-03-17 15:47:57,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 15:47:57,174 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 240 transitions. [2025-03-17 15:47:57,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-03-17 15:47:57,176 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 15:47:57,176 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 15:47:57,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-17 15:47:57,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:47:57,381 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_32_to_55_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_32_to_55_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2025-03-17 15:47:57,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 15:47:57,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1637581785, now seen corresponding path program 1 times [2025-03-17 15:47:57,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 15:47:57,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020986730] [2025-03-17 15:47:57,381 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 15:47:57,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 15:47:57,390 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-03-17 15:47:57,404 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 15:47:57,404 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 15:47:57,404 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-17 15:47:57,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [798864186] [2025-03-17 15:47:57,405 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 15:47:57,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:47:57,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 15:47:57,410 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 15:47:57,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-17 15:47:57,464 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-03-17 15:47:57,486 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 15:47:57,486 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 15:47:57,486 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:47:57,487 INFO L256 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-03-17 15:47:57,489 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 15:47:57,493 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 15:47:57,502 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 25 treesize of output 17 [2025-03-17 15:47:57,505 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 15:47:57,508 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 15:47:57,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2025-03-17 15:47:57,597 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 15:47:57,605 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 15:47:57,605 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 15:47:57,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 15:47:57,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020986730] [2025-03-17 15:47:57,605 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-17 15:47:57,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798864186] [2025-03-17 15:47:57,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798864186] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 15:47:57,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 15:47:57,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 15:47:57,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980569165] [2025-03-17 15:47:57,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 15:47:57,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 15:47:57,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 15:47:57,606 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 15:47:57,606 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-17 15:47:57,606 INFO L87 Difference]: Start difference. First operand 188 states and 240 transitions. Second operand has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-17 15:47:57,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 15:47:57,931 INFO L93 Difference]: Finished difference Result 191 states and 243 transitions. [2025-03-17 15:47:57,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 15:47:57,932 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2025-03-17 15:47:57,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 15:47:57,933 INFO L225 Difference]: With dead ends: 191 [2025-03-17 15:47:57,933 INFO L226 Difference]: Without dead ends: 190 [2025-03-17 15:47:57,933 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-17 15:47:57,933 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 62 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 15:47:57,933 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 156 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 15:47:57,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2025-03-17 15:47:57,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 189. [2025-03-17 15:47:57,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 126 states have (on average 1.5) internal successors, (189), 158 states have internal predecessors, (189), 24 states have call successors, (24), 8 states have call predecessors, (24), 9 states have return successors, (28), 24 states have call predecessors, (28), 24 states have call successors, (28) [2025-03-17 15:47:57,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 241 transitions. [2025-03-17 15:47:57,951 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 241 transitions. Word has length 31 [2025-03-17 15:47:57,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 15:47:57,951 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 241 transitions. [2025-03-17 15:47:57,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-17 15:47:57,952 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 241 transitions. [2025-03-17 15:47:57,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-03-17 15:47:57,952 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 15:47:57,952 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 15:47:57,959 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-17 15:47:58,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2025-03-17 15:47:58,156 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_32_to_55_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_32_to_55_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2025-03-17 15:47:58,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 15:47:58,156 INFO L85 PathProgramCache]: Analyzing trace with hash -774572158, now seen corresponding path program 1 times [2025-03-17 15:47:58,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 15:47:58,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131122648] [2025-03-17 15:47:58,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 15:47:58,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 15:47:58,163 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-03-17 15:47:58,182 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-03-17 15:47:58,183 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 15:47:58,183 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-17 15:47:58,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2019580416] [2025-03-17 15:47:58,186 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 15:47:58,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:47:58,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 15:47:58,187 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 15:47:58,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-17 15:47:58,240 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-03-17 15:47:58,262 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-03-17 15:47:58,262 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 15:47:58,262 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:47:58,264 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 35 conjuncts are in the unsatisfiable core [2025-03-17 15:47:58,265 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 15:47:58,270 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 15:47:58,276 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 15:47:58,280 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 11 [2025-03-17 15:47:58,283 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 15:47:58,603 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 15:47:58,603 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 35 treesize of output 31 [2025-03-17 15:47:58,652 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 15:47:58,680 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 15:47:58,680 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 15:47:58,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 15:47:58,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131122648] [2025-03-17 15:47:58,680 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-17 15:47:58,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019580416] [2025-03-17 15:47:58,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019580416] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 15:47:58,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 15:47:58,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 15:47:58,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995869079] [2025-03-17 15:47:58,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 15:47:58,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 15:47:58,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 15:47:58,681 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 15:47:58,681 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2025-03-17 15:47:58,681 INFO L87 Difference]: Start difference. First operand 189 states and 241 transitions. Second operand has 12 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-17 15:47:59,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 15:47:59,277 INFO L93 Difference]: Finished difference Result 191 states and 242 transitions. [2025-03-17 15:47:59,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 15:47:59,279 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2025-03-17 15:47:59,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 15:47:59,280 INFO L225 Difference]: With dead ends: 191 [2025-03-17 15:47:59,280 INFO L226 Difference]: Without dead ends: 183 [2025-03-17 15:47:59,280 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2025-03-17 15:47:59,281 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 124 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-17 15:47:59,281 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 195 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-17 15:47:59,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2025-03-17 15:47:59,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2025-03-17 15:47:59,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 121 states have (on average 1.512396694214876) internal successors, (183), 153 states have internal predecessors, (183), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (27), 23 states have call predecessors, (27), 24 states have call successors, (27) [2025-03-17 15:47:59,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 234 transitions. [2025-03-17 15:47:59,293 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 234 transitions. Word has length 32 [2025-03-17 15:47:59,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 15:47:59,293 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 234 transitions. [2025-03-17 15:47:59,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-17 15:47:59,294 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 234 transitions. [2025-03-17 15:47:59,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-03-17 15:47:59,294 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 15:47:59,294 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 15:47:59,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-17 15:47:59,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-03-17 15:47:59,498 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_41_to_52_0Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_32_to_55_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_32_to_55_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2025-03-17 15:47:59,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 15:47:59,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1491022849, now seen corresponding path program 1 times [2025-03-17 15:47:59,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 15:47:59,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900219334] [2025-03-17 15:47:59,499 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 15:47:59,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 15:47:59,506 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-03-17 15:47:59,529 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-17 15:47:59,530 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 15:47:59,530 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-17 15:47:59,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [593731325] [2025-03-17 15:47:59,532 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 15:47:59,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:47:59,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 15:47:59,536 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 15:47:59,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-17 15:47:59,599 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-03-17 15:47:59,632 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-17 15:47:59,632 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 15:47:59,632 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:47:59,633 INFO L256 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-03-17 15:47:59,635 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 15:47:59,637 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 15:47:59,730 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-17 15:47:59,730 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 15:47:59,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 15:47:59,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900219334] [2025-03-17 15:47:59,730 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-17 15:47:59,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593731325] [2025-03-17 15:47:59,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593731325] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 15:47:59,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 15:47:59,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-17 15:47:59,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913299361] [2025-03-17 15:47:59,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 15:47:59,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 15:47:59,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 15:47:59,731 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 15:47:59,731 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-03-17 15:47:59,731 INFO L87 Difference]: Start difference. First operand 183 states and 234 transitions. Second operand has 9 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-17 15:47:59,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 15:47:59,865 INFO L93 Difference]: Finished difference Result 208 states and 243 transitions. [2025-03-17 15:47:59,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 15:47:59,866 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 37 [2025-03-17 15:47:59,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 15:47:59,868 INFO L225 Difference]: With dead ends: 208 [2025-03-17 15:47:59,868 INFO L226 Difference]: Without dead ends: 206 [2025-03-17 15:47:59,868 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2025-03-17 15:47:59,868 INFO L435 NwaCegarLoop]: 83 mSDtfsCounter, 151 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 15:47:59,868 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 415 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 15:47:59,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2025-03-17 15:47:59,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 183. [2025-03-17 15:47:59,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 121 states have (on average 1.4793388429752066) internal successors, (179), 153 states have internal predecessors, (179), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (27), 23 states have call predecessors, (27), 24 states have call successors, (27) [2025-03-17 15:47:59,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 230 transitions. [2025-03-17 15:47:59,891 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 230 transitions. Word has length 37 [2025-03-17 15:47:59,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 15:47:59,892 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 230 transitions. [2025-03-17 15:47:59,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-17 15:47:59,892 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 230 transitions. [2025-03-17 15:47:59,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-03-17 15:47:59,893 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 15:47:59,893 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 15:47:59,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-03-17 15:48:00,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-03-17 15:48:00,094 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_41_to_52_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_32_to_55_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_32_to_55_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2025-03-17 15:48:00,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 15:48:00,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1646117697, now seen corresponding path program 1 times [2025-03-17 15:48:00,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 15:48:00,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050920027] [2025-03-17 15:48:00,095 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 15:48:00,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 15:48:00,102 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-03-17 15:48:00,117 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-17 15:48:00,117 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 15:48:00,117 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat