./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_cohendiv.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e2fb8bed 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.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 c56685f9b6d3ffae51cc6068fd351a6683202b948d7f1ef6f1e8af6f2a55035a --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 02:44:08,669 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 02:44:08,718 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-09 02:44:08,727 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 02:44:08,727 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 02:44:08,745 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 02:44:08,746 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 02:44:08,746 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 02:44:08,746 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 02:44:08,746 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 02:44:08,747 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 02:44:08,747 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 02:44:08,747 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 02:44:08,747 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 02:44:08,747 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 02:44:08,747 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 02:44:08,747 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-09 02:44:08,747 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 02:44:08,747 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 02:44:08,747 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 02:44:08,748 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 02:44:08,748 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-09 02:44:08,748 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 02:44:08,748 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-09 02:44:08,748 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-09 02:44:08,748 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 02:44:08,748 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 02:44:08,748 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-09 02:44:08,748 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 02:44:08,748 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 02:44:08,749 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 02:44:08,750 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 02:44:08,750 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 02:44:08,750 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 02:44:08,750 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 02:44:08,750 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 02:44:08,750 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 02:44:08,750 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-09 02:44:08,750 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-09 02:44:08,750 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 02:44:08,750 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 02:44:08,750 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 02:44:08,750 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 02:44:08,750 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 02:44:08,751 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 02:44:08,751 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 -> c56685f9b6d3ffae51cc6068fd351a6683202b948d7f1ef6f1e8af6f2a55035a [2025-03-09 02:44:08,960 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 02:44:08,969 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 02:44:08,970 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 02:44:08,971 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 02:44:08,972 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 02:44:08,972 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_nla-digbench/recursified_cohendiv.c [2025-03-09 02:44:10,137 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a10f373c/ec87f029e40c4791906d3c826f267bd9/FLAGeee87214d [2025-03-09 02:44:10,359 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 02:44:10,360 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_cohendiv.c [2025-03-09 02:44:10,368 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a10f373c/ec87f029e40c4791906d3c826f267bd9/FLAGeee87214d [2025-03-09 02:44:10,382 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a10f373c/ec87f029e40c4791906d3c826f267bd9 [2025-03-09 02:44:10,383 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 02:44:10,385 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 02:44:10,386 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 02:44:10,386 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 02:44:10,390 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 02:44:10,390 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 02:44:10" (1/1) ... [2025-03-09 02:44:10,391 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ccf2772 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:44:10, skipping insertion in model container [2025-03-09 02:44:10,392 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 02:44:10" (1/1) ... [2025-03-09 02:44:10,404 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 02:44:10,525 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 02:44:10,534 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 02:44:10,555 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 02:44:10,569 INFO L204 MainTranslator]: Completed translation [2025-03-09 02:44:10,570 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:44:10 WrapperNode [2025-03-09 02:44:10,570 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 02:44:10,571 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 02:44:10,571 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 02:44:10,571 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 02:44:10,578 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:44:10" (1/1) ... [2025-03-09 02:44:10,583 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:44:10" (1/1) ... [2025-03-09 02:44:10,597 INFO L138 Inliner]: procedures = 17, calls = 85, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 81 [2025-03-09 02:44:10,598 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 02:44:10,598 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 02:44:10,599 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 02:44:10,599 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 02:44:10,605 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:44:10" (1/1) ... [2025-03-09 02:44:10,605 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:44:10" (1/1) ... [2025-03-09 02:44:10,610 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:44:10" (1/1) ... [2025-03-09 02:44:10,631 INFO L175 MemorySlicer]: Split 49 memory accesses to 7 slices as follows [2, 8, 6, 8, 10, 5, 10]. 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, 3, 2, 3, 2, 1, 1]. [2025-03-09 02:44:10,631 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:44:10" (1/1) ... [2025-03-09 02:44:10,632 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:44:10" (1/1) ... [2025-03-09 02:44:10,639 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:44:10" (1/1) ... [2025-03-09 02:44:10,647 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:44:10" (1/1) ... [2025-03-09 02:44:10,648 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:44:10" (1/1) ... [2025-03-09 02:44:10,648 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:44:10" (1/1) ... [2025-03-09 02:44:10,650 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 02:44:10,653 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 02:44:10,653 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 02:44:10,653 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 02:44:10,654 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:44:10" (1/1) ... [2025-03-09 02:44:10,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 02:44:10,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:44:10,674 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) [2025-03-09 02:44:10,676 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 [2025-03-09 02:44:10,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 02:44:10,692 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_40_to_51_0 [2025-03-09 02:44:10,692 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_40_to_51_0 [2025-03-09 02:44:10,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 02:44:10,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-09 02:44:10,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-09 02:44:10,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-09 02:44:10,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-09 02:44:10,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-09 02:44:10,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-09 02:44:10,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-09 02:44:10,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-09 02:44:10,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-09 02:44:10,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-09 02:44:10,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-09 02:44:10,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-09 02:44:10,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-03-09 02:44:10,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-03-09 02:44:10,692 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_31_to_54_0 [2025-03-09 02:44:10,692 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_31_to_54_0 [2025-03-09 02:44:10,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 02:44:10,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 02:44:10,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-09 02:44:10,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-09 02:44:10,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-09 02:44:10,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-09 02:44:10,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-09 02:44:10,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-03-09 02:44:10,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-03-09 02:44:10,693 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-09 02:44:10,693 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-09 02:44:10,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-09 02:44:10,787 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 02:44:10,788 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 02:44:11,057 INFO L1307 $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; [2025-03-09 02:44:11,091 INFO L? ?]: Removed 69 outVars from TransFormulas that were not future-live. [2025-03-09 02:44:11,091 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 02:44:11,102 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 02:44:11,103 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 02:44:11,103 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 02:44:11 BoogieIcfgContainer [2025-03-09 02:44:11,103 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 02:44:11,104 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 02:44:11,104 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 02:44:11,107 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 02:44:11,107 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 02:44:10" (1/3) ... [2025-03-09 02:44:11,108 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aec1def and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 02:44:11, skipping insertion in model container [2025-03-09 02:44:11,108 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:44:10" (2/3) ... [2025-03-09 02:44:11,108 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aec1def and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 02:44:11, skipping insertion in model container [2025-03-09 02:44:11,108 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 02:44:11" (3/3) ... [2025-03-09 02:44:11,109 INFO L128 eAbstractionObserver]: Analyzing ICFG recursified_cohendiv.c [2025-03-09 02:44:11,121 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 02:44:11,122 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG recursified_cohendiv.c that has 4 procedures, 103 locations, 1 initial locations, 0 loop locations, and 30 error locations. [2025-03-09 02:44:11,165 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 02:44:11,173 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;@1da1124, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 02:44:11,175 INFO L334 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2025-03-09 02:44:11,178 INFO L276 IsEmpty]: Start isEmpty. Operand has 103 states, 58 states have (on average 1.6206896551724137) internal successors, (94), 90 states have internal predecessors, (94), 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) [2025-03-09 02:44:11,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-09 02:44:11,182 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:44:11,182 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:44:11,183 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_31_to_54_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_51_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_51_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2025-03-09 02:44:11,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:44:11,186 INFO L85 PathProgramCache]: Analyzing trace with hash 602773517, now seen corresponding path program 1 times [2025-03-09 02:44:11,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:44:11,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258106494] [2025-03-09 02:44:11,194 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:44:11,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:44:11,260 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 02:44:11,285 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 02:44:11,285 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:44:11,285 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:44:11,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 02:44:11,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:44:11,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258106494] [2025-03-09 02:44:11,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258106494] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:44:11,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:44:11,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 02:44:11,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122296636] [2025-03-09 02:44:11,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:44:11,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-09 02:44:11,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:44:11,373 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-09 02:44:11,374 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-09 02:44:11,376 INFO L87 Difference]: Start difference. First operand has 103 states, 58 states have (on average 1.6206896551724137) internal successors, (94), 90 states have internal predecessors, (94), 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 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 02:44:11,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:44:11,406 INFO L93 Difference]: Finished difference Result 202 states and 238 transitions. [2025-03-09 02:44:11,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-09 02:44:11,408 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-03-09 02:44:11,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:44:11,414 INFO L225 Difference]: With dead ends: 202 [2025-03-09 02:44:11,415 INFO L226 Difference]: Without dead ends: 96 [2025-03-09 02:44:11,420 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 [2025-03-09 02:44:11,423 INFO L435 NwaCegarLoop]: 111 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, 111 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 [2025-03-09 02:44:11,426 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 02:44:11,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2025-03-09 02:44:11,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2025-03-09 02:44:11,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 53 states have (on average 1.5849056603773586) internal successors, (84), 84 states have internal predecessors, (84), 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) [2025-03-09 02:44:11,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 104 transitions. [2025-03-09 02:44:11,468 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 104 transitions. Word has length 8 [2025-03-09 02:44:11,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:44:11,469 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 104 transitions. [2025-03-09 02:44:11,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 02:44:11,470 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 104 transitions. [2025-03-09 02:44:11,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-09 02:44:11,470 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:44:11,470 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:44:11,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 02:44:11,471 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_31_to_54_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_51_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_51_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2025-03-09 02:44:11,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:44:11,471 INFO L85 PathProgramCache]: Analyzing trace with hash 631402668, now seen corresponding path program 1 times [2025-03-09 02:44:11,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:44:11,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651951295] [2025-03-09 02:44:11,472 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:44:11,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:44:11,490 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 02:44:11,524 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 02:44:11,526 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:44:11,527 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-09 02:44:11,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2136997585] [2025-03-09 02:44:11,532 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:44:11,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:44:11,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:44:11,534 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) [2025-03-09 02:44:11,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-09 02:44:11,591 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 02:44:11,637 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 02:44:11,637 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:44:11,638 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:44:11,640 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-03-09 02:44:11,644 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:44:11,708 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 [2025-03-09 02:44:11,751 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 [2025-03-09 02:44:11,826 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 [2025-03-09 02:44:11,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 02:44:11,836 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 02:44:11,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:44:11,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651951295] [2025-03-09 02:44:11,837 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-09 02:44:11,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136997585] [2025-03-09 02:44:11,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136997585] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:44:11,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:44:11,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-09 02:44:11,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830426272] [2025-03-09 02:44:11,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:44:11,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-09 02:44:11,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:44:11,838 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-09 02:44:11,839 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-09 02:44:11,839 INFO L87 Difference]: Start difference. First operand 96 states and 104 transitions. Second operand has 8 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 7 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 02:44:12,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:44:12,001 INFO L93 Difference]: Finished difference Result 118 states and 129 transitions. [2025-03-09 02:44:12,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-09 02:44:12,001 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 7 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-03-09 02:44:12,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:44:12,003 INFO L225 Difference]: With dead ends: 118 [2025-03-09 02:44:12,003 INFO L226 Difference]: Without dead ends: 117 [2025-03-09 02:44:12,003 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2025-03-09 02:44:12,004 INFO L435 NwaCegarLoop]: 93 mSDtfsCounter, 35 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 02:44:12,004 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 597 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 02:44:12,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2025-03-09 02:44:12,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 111. [2025-03-09 02:44:12,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 65 states have (on average 1.5692307692307692) internal successors, (102), 96 states have internal predecessors, (102), 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) [2025-03-09 02:44:12,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 127 transitions. [2025-03-09 02:44:12,017 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 127 transitions. Word has length 8 [2025-03-09 02:44:12,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:44:12,017 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 127 transitions. [2025-03-09 02:44:12,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 7 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 02:44:12,018 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 127 transitions. [2025-03-09 02:44:12,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-09 02:44:12,018 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:44:12,018 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:44:12,024 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-09 02:44:12,218 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 [2025-03-09 02:44:12,219 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_31_to_54_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_51_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_51_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2025-03-09 02:44:12,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:44:12,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1901353726, now seen corresponding path program 1 times [2025-03-09 02:44:12,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:44:12,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921927448] [2025-03-09 02:44:12,221 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:44:12,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:44:12,230 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-09 02:44:12,247 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-09 02:44:12,247 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:44:12,247 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-09 02:44:12,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1434800449] [2025-03-09 02:44:12,251 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:44:12,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:44:12,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:44:12,253 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) [2025-03-09 02:44:12,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-09 02:44:12,309 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-09 02:44:12,334 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-09 02:44:12,334 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:44:12,334 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:44:12,341 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-03-09 02:44:12,344 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:44:12,371 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 [2025-03-09 02:44:12,395 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 [2025-03-09 02:44:12,441 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 [2025-03-09 02:44:12,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 02:44:12,458 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 02:44:12,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:44:12,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921927448] [2025-03-09 02:44:12,458 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-09 02:44:12,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434800449] [2025-03-09 02:44:12,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434800449] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:44:12,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:44:12,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-09 02:44:12,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843395663] [2025-03-09 02:44:12,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:44:12,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-09 02:44:12,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:44:12,459 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-09 02:44:12,459 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-09 02:44:12,459 INFO L87 Difference]: Start difference. First operand 111 states and 127 transitions. Second operand has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 02:44:12,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:44:12,601 INFO L93 Difference]: Finished difference Result 117 states and 128 transitions. [2025-03-09 02:44:12,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-09 02:44:12,601 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-03-09 02:44:12,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:44:12,602 INFO L225 Difference]: With dead ends: 117 [2025-03-09 02:44:12,602 INFO L226 Difference]: Without dead ends: 116 [2025-03-09 02:44:12,602 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2025-03-09 02:44:12,603 INFO L435 NwaCegarLoop]: 94 mSDtfsCounter, 32 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 02:44:12,603 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 601 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 02:44:12,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2025-03-09 02:44:12,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 111. [2025-03-09 02:44:12,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 65 states have (on average 1.5538461538461539) internal successors, (101), 96 states have internal predecessors, (101), 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) [2025-03-09 02:44:12,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 126 transitions. [2025-03-09 02:44:12,609 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 126 transitions. Word has length 9 [2025-03-09 02:44:12,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:44:12,609 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 126 transitions. [2025-03-09 02:44:12,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 02:44:12,609 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 126 transitions. [2025-03-09 02:44:12,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-03-09 02:44:12,609 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:44:12,609 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:44:12,616 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-09 02:44:12,814 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 [2025-03-09 02:44:12,814 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_31_to_54_0Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_51_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_51_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2025-03-09 02:44:12,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:44:12,814 INFO L85 PathProgramCache]: Analyzing trace with hash 857693646, now seen corresponding path program 1 times [2025-03-09 02:44:12,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:44:12,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419110773] [2025-03-09 02:44:12,814 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:44:12,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:44:12,823 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-09 02:44:12,843 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 02:44:12,843 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:44:12,843 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-09 02:44:12,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1563793049] [2025-03-09 02:44:12,847 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:44:12,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:44:12,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:44:12,849 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) [2025-03-09 02:44:12,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-09 02:44:12,904 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-09 02:44:12,925 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 02:44:12,926 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:44:12,926 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:44:12,927 INFO L256 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-09 02:44:12,928 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:44:12,933 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 [2025-03-09 02:44:13,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 02:44:13,018 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 02:44:13,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:44:13,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419110773] [2025-03-09 02:44:13,018 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-09 02:44:13,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563793049] [2025-03-09 02:44:13,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563793049] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:44:13,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:44:13,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-09 02:44:13,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969168015] [2025-03-09 02:44:13,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:44:13,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 02:44:13,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:44:13,020 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 02:44:13,020 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-09 02:44:13,020 INFO L87 Difference]: Start difference. First operand 111 states and 126 transitions. Second operand has 7 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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) [2025-03-09 02:44:13,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:44:13,148 INFO L93 Difference]: Finished difference Result 184 states and 199 transitions. [2025-03-09 02:44:13,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 02:44:13,148 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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 16 [2025-03-09 02:44:13,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:44:13,149 INFO L225 Difference]: With dead ends: 184 [2025-03-09 02:44:13,151 INFO L226 Difference]: Without dead ends: 182 [2025-03-09 02:44:13,151 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2025-03-09 02:44:13,151 INFO L435 NwaCegarLoop]: 88 mSDtfsCounter, 126 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 02:44:13,153 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 435 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 02:44:13,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2025-03-09 02:44:13,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 146. [2025-03-09 02:44:13,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 92 states have (on average 1.5543478260869565) internal successors, (143), 125 states have internal predecessors, (143), 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) [2025-03-09 02:44:13,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 180 transitions. [2025-03-09 02:44:13,172 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 180 transitions. Word has length 16 [2025-03-09 02:44:13,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:44:13,172 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 180 transitions. [2025-03-09 02:44:13,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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) [2025-03-09 02:44:13,172 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 180 transitions. [2025-03-09 02:44:13,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-03-09 02:44:13,173 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:44:13,173 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:44:13,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-09 02:44:13,373 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 [2025-03-09 02:44:13,373 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_31_to_54_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_51_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_51_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2025-03-09 02:44:13,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:44:13,374 INFO L85 PathProgramCache]: Analyzing trace with hash -390125748, now seen corresponding path program 1 times [2025-03-09 02:44:13,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:44:13,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46069225] [2025-03-09 02:44:13,374 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:44:13,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:44:13,384 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-09 02:44:13,409 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 02:44:13,409 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:44:13,409 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-09 02:44:13,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1701278655] [2025-03-09 02:44:13,411 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:44:13,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:44:13,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:44:13,413 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) [2025-03-09 02:44:13,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-09 02:44:13,467 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-09 02:44:13,487 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 02:44:13,487 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:44:13,487 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:44:13,488 INFO L256 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-03-09 02:44:13,490 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:44:13,496 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 [2025-03-09 02:44:13,498 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 [2025-03-09 02:44:13,508 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 [2025-03-09 02:44:13,512 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 [2025-03-09 02:44:13,517 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 [2025-03-09 02:44:13,614 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 [2025-03-09 02:44:13,631 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 [2025-03-09 02:44:13,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 02:44:13,643 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 02:44:13,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:44:13,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46069225] [2025-03-09 02:44:13,643 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-09 02:44:13,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701278655] [2025-03-09 02:44:13,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701278655] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:44:13,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:44:13,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-09 02:44:13,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729460246] [2025-03-09 02:44:13,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:44:13,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-09 02:44:13,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:44:13,644 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-09 02:44:13,644 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-03-09 02:44:13,645 INFO L87 Difference]: Start difference. First operand 146 states and 180 transitions. Second operand has 9 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 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) [2025-03-09 02:44:17,823 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] [2025-03-09 02:44:17,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:44:17,899 INFO L93 Difference]: Finished difference Result 178 states and 193 transitions. [2025-03-09 02:44:17,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-09 02:44:17,899 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 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 [2025-03-09 02:44:17,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:44:17,900 INFO L225 Difference]: With dead ends: 178 [2025-03-09 02:44:17,900 INFO L226 Difference]: Without dead ends: 177 [2025-03-09 02:44:17,901 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 [2025-03-09 02:44:17,901 INFO L435 NwaCegarLoop]: 82 mSDtfsCounter, 97 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2025-03-09 02:44:17,901 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 569 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 205 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2025-03-09 02:44:17,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2025-03-09 02:44:17,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 146. [2025-03-09 02:44:17,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 92 states have (on average 1.5434782608695652) internal successors, (142), 125 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) [2025-03-09 02:44:17,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 179 transitions. [2025-03-09 02:44:17,910 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 179 transitions. Word has length 18 [2025-03-09 02:44:17,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:44:17,911 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 179 transitions. [2025-03-09 02:44:17,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 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) [2025-03-09 02:44:17,911 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 179 transitions. [2025-03-09 02:44:17,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-03-09 02:44:17,911 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:44:17,911 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:44:17,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-09 02:44:18,111 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 [2025-03-09 02:44:18,112 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_31_to_54_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_51_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_51_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2025-03-09 02:44:18,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:44:18,112 INFO L85 PathProgramCache]: Analyzing trace with hash 791003736, now seen corresponding path program 1 times [2025-03-09 02:44:18,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:44:18,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393456446] [2025-03-09 02:44:18,112 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:44:18,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:44:18,120 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-09 02:44:18,145 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 02:44:18,146 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:44:18,146 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-09 02:44:18,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1945492146] [2025-03-09 02:44:18,152 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:44:18,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:44:18,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:44:18,154 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) [2025-03-09 02:44:18,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-09 02:44:18,229 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-09 02:44:18,250 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 02:44:18,250 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:44:18,250 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:44:18,257 INFO L256 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-03-09 02:44:18,259 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:44:18,267 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 [2025-03-09 02:44:18,275 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 [2025-03-09 02:44:18,279 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 [2025-03-09 02:44:18,282 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 [2025-03-09 02:44:18,392 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 [2025-03-09 02:44:18,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 02:44:18,408 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 02:44:18,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:44:18,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393456446] [2025-03-09 02:44:18,408 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-09 02:44:18,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945492146] [2025-03-09 02:44:18,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945492146] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:44:18,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:44:18,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-09 02:44:18,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898078633] [2025-03-09 02:44:18,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:44:18,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-09 02:44:18,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:44:18,409 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-09 02:44:18,409 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-03-09 02:44:18,409 INFO L87 Difference]: Start difference. First operand 146 states and 179 transitions. Second operand has 9 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 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) [2025-03-09 02:44:18,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:44:18,640 INFO L93 Difference]: Finished difference Result 181 states and 196 transitions. [2025-03-09 02:44:18,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-09 02:44:18,640 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 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 19 [2025-03-09 02:44:18,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:44:18,641 INFO L225 Difference]: With dead ends: 181 [2025-03-09 02:44:18,641 INFO L226 Difference]: Without dead ends: 180 [2025-03-09 02:44:18,642 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2025-03-09 02:44:18,642 INFO L435 NwaCegarLoop]: 82 mSDtfsCounter, 118 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-09 02:44:18,642 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 541 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-09 02:44:18,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2025-03-09 02:44:18,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 146. [2025-03-09 02:44:18,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 92 states have (on average 1.5326086956521738) internal successors, (141), 125 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) [2025-03-09 02:44:18,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 178 transitions. [2025-03-09 02:44:18,658 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 178 transitions. Word has length 19 [2025-03-09 02:44:18,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:44:18,658 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 178 transitions. [2025-03-09 02:44:18,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 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) [2025-03-09 02:44:18,658 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 178 transitions. [2025-03-09 02:44:18,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-03-09 02:44:18,659 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:44:18,659 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] [2025-03-09 02:44:18,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-09 02:44:18,859 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 [2025-03-09 02:44:18,859 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_40_to_51_0Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_51_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_51_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2025-03-09 02:44:18,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:44:18,860 INFO L85 PathProgramCache]: Analyzing trace with hash -181110233, now seen corresponding path program 1 times [2025-03-09 02:44:18,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:44:18,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281999162] [2025-03-09 02:44:18,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:44:18,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:44:18,877 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-03-09 02:44:18,911 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-03-09 02:44:18,911 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:44:18,911 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-09 02:44:18,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [231539067] [2025-03-09 02:44:18,913 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:44:18,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:44:18,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:44:18,914 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) [2025-03-09 02:44:18,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-09 02:44:18,969 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-03-09 02:44:18,997 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-03-09 02:44:18,998 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:44:18,998 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:44:18,999 INFO L256 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-03-09 02:44:19,002 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:44:19,015 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 [2025-03-09 02:44:19,095 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 [2025-03-09 02:44:19,134 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 [2025-03-09 02:44:19,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-03-09 02:44:19,163 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-09 02:44:19,163 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 02:44:19,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:44:19,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281999162] [2025-03-09 02:44:19,163 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-09 02:44:19,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231539067] [2025-03-09 02:44:19,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231539067] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:44:19,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:44:19,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-09 02:44:19,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890117667] [2025-03-09 02:44:19,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:44:19,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-09 02:44:19,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:44:19,165 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-09 02:44:19,165 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-03-09 02:44:19,165 INFO L87 Difference]: Start difference. First operand 146 states and 178 transitions. Second operand has 11 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 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) [2025-03-09 02:44:23,175 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] [2025-03-09 02:44:23,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:44:23,437 INFO L93 Difference]: Finished difference Result 224 states and 281 transitions. [2025-03-09 02:44:23,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-09 02:44:23,438 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 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 [2025-03-09 02:44:23,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:44:23,440 INFO L225 Difference]: With dead ends: 224 [2025-03-09 02:44:23,440 INFO L226 Difference]: Without dead ends: 223 [2025-03-09 02:44:23,441 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2025-03-09 02:44:23,441 INFO L435 NwaCegarLoop]: 77 mSDtfsCounter, 194 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 25 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2025-03-09 02:44:23,441 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 566 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 299 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2025-03-09 02:44:23,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2025-03-09 02:44:23,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 184. [2025-03-09 02:44:23,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 122 states have (on average 1.5327868852459017) internal successors, (187), 155 states have internal predecessors, (187), 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) [2025-03-09 02:44:23,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 238 transitions. [2025-03-09 02:44:23,458 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 238 transitions. Word has length 30 [2025-03-09 02:44:23,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:44:23,458 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 238 transitions. [2025-03-09 02:44:23,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 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) [2025-03-09 02:44:23,459 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 238 transitions. [2025-03-09 02:44:23,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-03-09 02:44:23,459 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:44:23,459 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] [2025-03-09 02:44:23,466 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-09 02:44:23,664 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 [2025-03-09 02:44:23,664 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_51_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_51_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2025-03-09 02:44:23,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:44:23,665 INFO L85 PathProgramCache]: Analyzing trace with hash -184065566, now seen corresponding path program 1 times [2025-03-09 02:44:23,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:44:23,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911114168] [2025-03-09 02:44:23,665 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:44:23,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:44:23,688 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-03-09 02:44:23,715 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-03-09 02:44:23,715 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:44:23,715 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-09 02:44:23,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [611061357] [2025-03-09 02:44:23,717 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:44:23,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:44:23,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:44:23,719 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) [2025-03-09 02:44:23,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-09 02:44:23,773 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-03-09 02:44:23,796 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-03-09 02:44:23,796 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:44:23,796 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:44:23,797 INFO L256 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-03-09 02:44:23,799 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:44:23,810 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 [2025-03-09 02:44:23,829 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 [2025-03-09 02:44:23,979 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 [2025-03-09 02:44:23,989 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 02:44:23,989 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 02:44:23,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:44:23,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911114168] [2025-03-09 02:44:23,989 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-09 02:44:23,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611061357] [2025-03-09 02:44:23,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611061357] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:44:23,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:44:23,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-09 02:44:23,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044941840] [2025-03-09 02:44:23,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:44:23,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-09 02:44:23,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:44:23,990 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-09 02:44:23,990 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-03-09 02:44:23,990 INFO L87 Difference]: Start difference. First operand 184 states and 238 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-09 02:44:28,001 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] [2025-03-09 02:44:28,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:44:28,365 INFO L93 Difference]: Finished difference Result 192 states and 248 transitions. [2025-03-09 02:44:28,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 02:44:28,366 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2025-03-09 02:44:28,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:44:28,367 INFO L225 Difference]: With dead ends: 192 [2025-03-09 02:44:28,367 INFO L226 Difference]: Without dead ends: 191 [2025-03-09 02:44:28,367 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2025-03-09 02:44:28,368 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 85 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2025-03-09 02:44:28,368 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 164 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 472 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2025-03-09 02:44:28,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2025-03-09 02:44:28,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 188. [2025-03-09 02:44:28,379 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) [2025-03-09 02:44:28,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 242 transitions. [2025-03-09 02:44:28,380 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 242 transitions. Word has length 30 [2025-03-09 02:44:28,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:44:28,380 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 242 transitions. [2025-03-09 02:44:28,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-09 02:44:28,380 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 242 transitions. [2025-03-09 02:44:28,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-03-09 02:44:28,381 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:44:28,384 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] [2025-03-09 02:44:28,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-09 02:44:28,585 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 [2025-03-09 02:44:28,585 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_40_to_51_0Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_51_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_51_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2025-03-09 02:44:28,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:44:28,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1319449916, now seen corresponding path program 1 times [2025-03-09 02:44:28,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:44:28,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421005253] [2025-03-09 02:44:28,586 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:44:28,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:44:28,594 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-03-09 02:44:28,612 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-09 02:44:28,612 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:44:28,613 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-09 02:44:28,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [560176041] [2025-03-09 02:44:28,614 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:44:28,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:44:28,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:44:28,616 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) [2025-03-09 02:44:28,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-09 02:44:28,676 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-03-09 02:44:28,706 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-09 02:44:28,707 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:44:28,707 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:44:28,709 INFO L256 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 76 conjuncts are in the unsatisfiable core [2025-03-09 02:44:28,715 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:44:28,722 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 [2025-03-09 02:44:28,724 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 [2025-03-09 02:44:28,740 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 11 [2025-03-09 02:44:32,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-03-09 02:44:41,210 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-09 02:44:41,211 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 30 treesize of output 30 [2025-03-09 02:44:45,293 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 [2025-03-09 02:44:57,556 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-09 02:44:57,556 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 33 treesize of output 29 [2025-03-09 02:44:57,601 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 3 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 02:44:57,601 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:44:58,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:44:58,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421005253] [2025-03-09 02:44:58,064 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-09 02:44:58,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560176041] [2025-03-09 02:44:58,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560176041] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:44:58,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-03-09 02:44:58,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2025-03-09 02:44:58,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776222076] [2025-03-09 02:44:58,064 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-03-09 02:44:58,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-03-09 02:44:58,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:44:58,065 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-03-09 02:44:58,065 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=610, Unknown=7, NotChecked=0, Total=702 [2025-03-09 02:44:58,065 INFO L87 Difference]: Start difference. First operand 188 states and 242 transitions. Second operand has 20 states, 16 states have (on average 1.5625) internal successors, (25), 16 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-09 02:45:02,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-03-09 02:45:06,123 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-09 02:45:15,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-03-09 02:45:19,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-03-09 02:45:23,490 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-03-09 02:45:27,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-03-09 02:45:31,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-03-09 02:45:35,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-03-09 02:45:39,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-03-09 02:45:43,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-03-09 02:45:47,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-03-09 02:45:51,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-03-09 02:45:55,866 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0]