./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursified_loop-simple/recursified_deep-nested.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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_1.5.800.v20200727-1323.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_loop-simple/recursified_deep-nested.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dea78793c7130d873f751539350d9a84f129d659be765f9ed3f85c683976c43a --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 23:24:53,636 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 23:24:53,679 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 23:24:53,683 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 23:24:53,684 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 23:24:53,707 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 23:24:53,708 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 23:24:53,708 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 23:24:53,708 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 23:24:53,708 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 23:24:53,709 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 23:24:53,709 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 23:24:53,709 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 23:24:53,709 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 23:24:53,709 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 23:24:53,710 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 23:24:53,710 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 23:24:53,713 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 23:24:53,713 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 23:24:53,713 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 23:24:53,716 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 23:24:53,716 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 23:24:53,717 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 23:24:53,717 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 23:24:53,717 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 23:24:53,717 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 23:24:53,717 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 23:24:53,717 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 23:24:53,717 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 23:24:53,717 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 23:24:53,718 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 23:24:53,718 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 23:24:53,718 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 23:24:53,718 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 23:24:53,718 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 23:24:53,718 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 23:24:53,718 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 23:24:53,719 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 23:24:53,719 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 23:24:53,719 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 23:24:53,719 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 23:24:53,720 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 23:24:53,720 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dea78793c7130d873f751539350d9a84f129d659be765f9ed3f85c683976c43a [2024-11-09 23:24:53,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 23:24:53,910 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 23:24:53,911 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 23:24:53,913 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 23:24:53,913 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 23:24:53,914 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_loop-simple/recursified_deep-nested.c [2024-11-09 23:24:55,112 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 23:24:55,244 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 23:24:55,248 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_loop-simple/recursified_deep-nested.c [2024-11-09 23:24:55,254 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01ad9710d/0586860773af40319f47dba5730466f1/FLAGf5d5415f7 [2024-11-09 23:24:55,265 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01ad9710d/0586860773af40319f47dba5730466f1 [2024-11-09 23:24:55,267 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 23:24:55,268 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 23:24:55,269 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 23:24:55,270 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 23:24:55,273 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 23:24:55,274 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 11:24:55" (1/1) ... [2024-11-09 23:24:55,274 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52d01903 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:24:55, skipping insertion in model container [2024-11-09 23:24:55,275 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 11:24:55" (1/1) ... [2024-11-09 23:24:55,293 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 23:24:55,443 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_loop-simple/recursified_deep-nested.c[1440,1453] [2024-11-09 23:24:55,459 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 23:24:55,466 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 23:24:55,475 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_loop-simple/recursified_deep-nested.c[1440,1453] [2024-11-09 23:24:55,484 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 23:24:55,499 INFO L204 MainTranslator]: Completed translation [2024-11-09 23:24:55,499 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:24:55 WrapperNode [2024-11-09 23:24:55,499 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 23:24:55,500 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 23:24:55,501 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 23:24:55,501 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 23:24:55,506 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:24:55" (1/1) ... [2024-11-09 23:24:55,512 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:24:55" (1/1) ... [2024-11-09 23:24:55,522 INFO L138 Inliner]: procedures = 16, calls = 71, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 44 [2024-11-09 23:24:55,523 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 23:24:55,523 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 23:24:55,523 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 23:24:55,523 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 23:24:55,531 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:24:55" (1/1) ... [2024-11-09 23:24:55,531 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:24:55" (1/1) ... [2024-11-09 23:24:55,533 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:24:55" (1/1) ... [2024-11-09 23:24:55,549 INFO L175 MemorySlicer]: Split 38 memory accesses to 7 slices as follows [2, 5, 6, 6, 7, 6, 6]. 18 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0]. The 11 writes are split as follows [0, 2, 2, 2, 1, 2, 2]. [2024-11-09 23:24:55,549 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:24:55" (1/1) ... [2024-11-09 23:24:55,549 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:24:55" (1/1) ... [2024-11-09 23:24:55,555 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:24:55" (1/1) ... [2024-11-09 23:24:55,556 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:24:55" (1/1) ... [2024-11-09 23:24:55,558 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:24:55" (1/1) ... [2024-11-09 23:24:55,559 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:24:55" (1/1) ... [2024-11-09 23:24:55,561 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 23:24:55,562 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 23:24:55,562 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 23:24:55,562 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 23:24:55,563 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:24:55" (1/1) ... [2024-11-09 23:24:55,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 23:24:55,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 23:24:55,594 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) [2024-11-09 23:24:55,596 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 [2024-11-09 23:24:55,626 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_12_to_13_0 [2024-11-09 23:24:55,626 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_12_to_13_0 [2024-11-09 23:24:55,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 23:24:55,626 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_13_to_14_0 [2024-11-09 23:24:55,626 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_13_to_14_0 [2024-11-09 23:24:55,626 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_11_to_12_0 [2024-11-09 23:24:55,626 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_11_to_12_0 [2024-11-09 23:24:55,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 23:24:55,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 23:24:55,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 23:24:55,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-09 23:24:55,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-09 23:24:55,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-09 23:24:55,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-09 23:24:55,627 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_14_to_16_0 [2024-11-09 23:24:55,627 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_14_to_16_0 [2024-11-09 23:24:55,627 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_10_to_11_0 [2024-11-09 23:24:55,628 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_10_to_11_0 [2024-11-09 23:24:55,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 23:24:55,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 23:24:55,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 23:24:55,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 23:24:55,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-09 23:24:55,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-09 23:24:55,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-09 23:24:55,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-09 23:24:55,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 23:24:55,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 23:24:55,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 23:24:55,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 23:24:55,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 23:24:55,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-09 23:24:55,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-09 23:24:55,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-09 23:24:55,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-09 23:24:55,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 23:24:55,733 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 23:24:55,735 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 23:24:55,917 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L130: call ULTIMATE.dealloc(main_~#a~0#1.base, main_~#a~0#1.offset);havoc main_~#a~0#1.base, main_~#a~0#1.offset;call ULTIMATE.dealloc(main_~#b~0#1.base, main_~#b~0#1.offset);havoc main_~#b~0#1.base, main_~#b~0#1.offset;call ULTIMATE.dealloc(main_~#c~0#1.base, main_~#c~0#1.offset);havoc main_~#c~0#1.base, main_~#c~0#1.offset;call ULTIMATE.dealloc(main_~#d~0#1.base, main_~#d~0#1.offset);havoc main_~#d~0#1.base, main_~#d~0#1.offset;call ULTIMATE.dealloc(main_~#e~0#1.base, main_~#e~0#1.offset);havoc main_~#e~0#1.base, main_~#e~0#1.offset;call ULTIMATE.dealloc(main_~#uint32_max~0#1.base, main_~#uint32_max~0#1.offset);havoc main_~#uint32_max~0#1.base, main_~#uint32_max~0#1.offset; [2024-11-09 23:24:55,945 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2024-11-09 23:24:55,945 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 23:24:55,957 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 23:24:55,957 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 23:24:55,958 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 11:24:55 BoogieIcfgContainer [2024-11-09 23:24:55,958 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 23:24:55,960 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 23:24:55,961 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 23:24:55,963 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 23:24:55,963 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 11:24:55" (1/3) ... [2024-11-09 23:24:55,964 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27470e17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 11:24:55, skipping insertion in model container [2024-11-09 23:24:55,964 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:24:55" (2/3) ... [2024-11-09 23:24:55,964 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27470e17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 11:24:55, skipping insertion in model container [2024-11-09 23:24:55,964 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 11:24:55" (3/3) ... [2024-11-09 23:24:55,965 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_deep-nested.c [2024-11-09 23:24:55,977 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 23:24:55,977 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 23:24:56,022 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 23:24:56,027 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;@9790dc2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 23:24:56,027 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 23:24:56,030 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 40 states have internal predecessors, (45), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-09 23:24:56,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-09 23:24:56,037 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:24:56,038 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 23:24:56,038 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:24:56,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:24:56,042 INFO L85 PathProgramCache]: Analyzing trace with hash -717232106, now seen corresponding path program 1 times [2024-11-09 23:24:56,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:24:56,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616327320] [2024-11-09 23:24:56,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:24:56,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:24:56,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:24:57,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:24:57,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:24:57,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616327320] [2024-11-09 23:24:57,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616327320] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:24:57,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:24:57,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-09 23:24:57,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200553771] [2024-11-09 23:24:57,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:24:57,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 23:24:57,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:24:57,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 23:24:57,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2024-11-09 23:24:57,357 INFO L87 Difference]: Start difference. First operand has 51 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 40 states have internal predecessors, (45), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 10 states have internal predecessors, (21), 5 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:24:57,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:24:57,752 INFO L93 Difference]: Finished difference Result 115 states and 161 transitions. [2024-11-09 23:24:57,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 23:24:57,754 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 10 states have internal predecessors, (21), 5 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-09 23:24:57,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:24:57,760 INFO L225 Difference]: With dead ends: 115 [2024-11-09 23:24:57,761 INFO L226 Difference]: Without dead ends: 61 [2024-11-09 23:24:57,763 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2024-11-09 23:24:57,765 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 59 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 23:24:57,766 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 437 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 23:24:57,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-09 23:24:57,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 57. [2024-11-09 23:24:57,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 46 states have internal predecessors, (55), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2024-11-09 23:24:57,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 74 transitions. [2024-11-09 23:24:57,798 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 74 transitions. Word has length 26 [2024-11-09 23:24:57,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:24:57,799 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 74 transitions. [2024-11-09 23:24:57,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 10 states have internal predecessors, (21), 5 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:24:57,799 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 74 transitions. [2024-11-09 23:24:57,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-09 23:24:57,801 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:24:57,801 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 23:24:57,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 23:24:57,801 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:24:57,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:24:57,802 INFO L85 PathProgramCache]: Analyzing trace with hash -509063859, now seen corresponding path program 1 times [2024-11-09 23:24:57,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:24:57,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647759332] [2024-11-09 23:24:57,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:24:57,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:24:57,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:24:58,629 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:24:58,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:24:58,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647759332] [2024-11-09 23:24:58,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647759332] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 23:24:58,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696034117] [2024-11-09 23:24:58,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:24:58,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 23:24:58,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 23:24:58,632 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) [2024-11-09 23:24:58,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 23:24:58,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:24:58,794 INFO L255 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 177 conjuncts are in the unsatisfiable core [2024-11-09 23:24:58,802 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 23:24:58,848 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 [2024-11-09 23:24:58,852 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 [2024-11-09 23:24:59,023 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 [2024-11-09 23:24:59,124 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 [2024-11-09 23:24:59,300 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 [2024-11-09 23:24:59,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 [2024-11-09 23:24:59,560 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:24:59,561 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 23:25:00,590 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:25:00,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696034117] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 23:25:00,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 23:25:00,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 23, 22] total 54 [2024-11-09 23:25:00,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040995439] [2024-11-09 23:25:00,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 23:25:00,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-09 23:25:00,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:25:00,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-09 23:25:00,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=2663, Unknown=0, NotChecked=0, Total=2862 [2024-11-09 23:25:00,595 INFO L87 Difference]: Start difference. First operand 57 states and 74 transitions. Second operand has 54 states, 46 states have (on average 1.9782608695652173) internal successors, (91), 39 states have internal predecessors, (91), 16 states have call successors, (18), 16 states have call predecessors, (18), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:25:04,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:25:04,177 INFO L93 Difference]: Finished difference Result 301 states and 434 transitions. [2024-11-09 23:25:04,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-11-09 23:25:04,179 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 46 states have (on average 1.9782608695652173) internal successors, (91), 39 states have internal predecessors, (91), 16 states have call successors, (18), 16 states have call predecessors, (18), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-09 23:25:04,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:25:04,181 INFO L225 Difference]: With dead ends: 301 [2024-11-09 23:25:04,181 INFO L226 Difference]: Without dead ends: 247 [2024-11-09 23:25:04,185 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2818 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1086, Invalid=11346, Unknown=0, NotChecked=0, Total=12432 [2024-11-09 23:25:04,186 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 379 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 1784 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 1925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 1784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-09 23:25:04,186 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 1213 Invalid, 1925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 1784 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-09 23:25:04,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2024-11-09 23:25:04,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 195. [2024-11-09 23:25:04,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 148 states have (on average 1.3310810810810811) internal successors, (197), 163 states have internal predecessors, (197), 24 states have call successors, (24), 20 states have call predecessors, (24), 22 states have return successors, (41), 19 states have call predecessors, (41), 22 states have call successors, (41) [2024-11-09 23:25:04,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 262 transitions. [2024-11-09 23:25:04,234 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 262 transitions. Word has length 38 [2024-11-09 23:25:04,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:25:04,234 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 262 transitions. [2024-11-09 23:25:04,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 46 states have (on average 1.9782608695652173) internal successors, (91), 39 states have internal predecessors, (91), 16 states have call successors, (18), 16 states have call predecessors, (18), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:25:04,235 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 262 transitions. [2024-11-09 23:25:04,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-09 23:25:04,238 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:25:04,239 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 23:25:04,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 23:25:04,439 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 [2024-11-09 23:25:04,440 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:25:04,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:25:04,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1751295754, now seen corresponding path program 1 times [2024-11-09 23:25:04,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:25:04,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329527385] [2024-11-09 23:25:04,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:25:04,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:25:04,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:05,280 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-09 23:25:05,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:05,290 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 23:25:05,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:25:05,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329527385] [2024-11-09 23:25:05,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329527385] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 23:25:05,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318012163] [2024-11-09 23:25:05,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:25:05,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 23:25:05,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 23:25:05,293 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) [2024-11-09 23:25:05,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 23:25:05,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:05,436 INFO L255 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 134 conjuncts are in the unsatisfiable core [2024-11-09 23:25:05,443 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 23:25:05,447 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 [2024-11-09 23:25:05,458 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 [2024-11-09 23:25:05,544 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 [2024-11-09 23:25:05,562 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 [2024-11-09 23:25:05,692 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 23:25:05,693 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 23:25:06,525 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:25:06,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318012163] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 23:25:06,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 23:25:06,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 24] total 44 [2024-11-09 23:25:06,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957422453] [2024-11-09 23:25:06,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 23:25:06,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-09 23:25:06,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:25:06,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-09 23:25:06,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1745, Unknown=0, NotChecked=0, Total=1892 [2024-11-09 23:25:06,528 INFO L87 Difference]: Start difference. First operand 195 states and 262 transitions. Second operand has 44 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 33 states have internal predecessors, (79), 13 states have call successors, (16), 14 states have call predecessors, (16), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 23:25:10,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:25:10,114 INFO L93 Difference]: Finished difference Result 755 states and 1090 transitions. [2024-11-09 23:25:10,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2024-11-09 23:25:10,115 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 33 states have internal predecessors, (79), 13 states have call successors, (16), 14 states have call predecessors, (16), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 47 [2024-11-09 23:25:10,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:25:10,119 INFO L225 Difference]: With dead ends: 755 [2024-11-09 23:25:10,119 INFO L226 Difference]: Without dead ends: 566 [2024-11-09 23:25:10,126 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3632 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1065, Invalid=12741, Unknown=0, NotChecked=0, Total=13806 [2024-11-09 23:25:10,127 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 488 mSDsluCounter, 1101 mSDsCounter, 0 mSdLazyCounter, 1711 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 1867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 1711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 23:25:10,128 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 1157 Invalid, 1867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 1711 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 23:25:10,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2024-11-09 23:25:10,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 441. [2024-11-09 23:25:10,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 346 states have (on average 1.3179190751445087) internal successors, (456), 377 states have internal predecessors, (456), 43 states have call successors, (43), 39 states have call predecessors, (43), 51 states have return successors, (91), 34 states have call predecessors, (91), 41 states have call successors, (91) [2024-11-09 23:25:10,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 590 transitions. [2024-11-09 23:25:10,175 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 590 transitions. Word has length 47 [2024-11-09 23:25:10,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:25:10,176 INFO L471 AbstractCegarLoop]: Abstraction has 441 states and 590 transitions. [2024-11-09 23:25:10,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 33 states have internal predecessors, (79), 13 states have call successors, (16), 14 states have call predecessors, (16), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 23:25:10,176 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 590 transitions. [2024-11-09 23:25:10,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-09 23:25:10,179 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:25:10,179 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 23:25:10,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 23:25:10,380 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 [2024-11-09 23:25:10,380 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:25:10,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:25:10,381 INFO L85 PathProgramCache]: Analyzing trace with hash 169689359, now seen corresponding path program 1 times [2024-11-09 23:25:10,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:25:10,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118731683] [2024-11-09 23:25:10,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:25:10,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:25:10,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:11,403 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-09 23:25:11,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:11,409 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-09 23:25:11,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:11,413 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 19 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 23:25:11,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:25:11,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118731683] [2024-11-09 23:25:11,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118731683] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 23:25:11,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112217300] [2024-11-09 23:25:11,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:25:11,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 23:25:11,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 23:25:11,416 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) [2024-11-09 23:25:11,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 23:25:11,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:11,587 INFO L255 TraceCheckSpWp]: Trace formula consists of 762 conjuncts, 192 conjuncts are in the unsatisfiable core [2024-11-09 23:25:11,593 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 23:25:11,600 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 [2024-11-09 23:25:11,727 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 [2024-11-09 23:25:11,800 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 [2024-11-09 23:25:11,979 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-09 23:25:11,980 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 23:25:11,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112217300] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:25:11,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 23:25:11,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [20] total 34 [2024-11-09 23:25:11,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857461084] [2024-11-09 23:25:11,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:25:11,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 23:25:11,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:25:11,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 23:25:11,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=1046, Unknown=0, NotChecked=0, Total=1122 [2024-11-09 23:25:11,981 INFO L87 Difference]: Start difference. First operand 441 states and 590 transitions. Second operand has 16 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 11 states have internal predecessors, (33), 6 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 23:25:12,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:25:12,472 INFO L93 Difference]: Finished difference Result 902 states and 1237 transitions. [2024-11-09 23:25:12,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-09 23:25:12,472 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 11 states have internal predecessors, (33), 6 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 56 [2024-11-09 23:25:12,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:25:12,475 INFO L225 Difference]: With dead ends: 902 [2024-11-09 23:25:12,475 INFO L226 Difference]: Without dead ends: 459 [2024-11-09 23:25:12,477 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=141, Invalid=1839, Unknown=0, NotChecked=0, Total=1980 [2024-11-09 23:25:12,477 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 49 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 23:25:12,477 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 385 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 23:25:12,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2024-11-09 23:25:12,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 459. [2024-11-09 23:25:12,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 356 states have (on average 1.303370786516854) internal successors, (464), 385 states have internal predecessors, (464), 49 states have call successors, (49), 41 states have call predecessors, (49), 53 states have return successors, (105), 40 states have call predecessors, (105), 47 states have call successors, (105) [2024-11-09 23:25:12,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 618 transitions. [2024-11-09 23:25:12,537 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 618 transitions. Word has length 56 [2024-11-09 23:25:12,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:25:12,537 INFO L471 AbstractCegarLoop]: Abstraction has 459 states and 618 transitions. [2024-11-09 23:25:12,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 11 states have internal predecessors, (33), 6 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 23:25:12,537 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 618 transitions. [2024-11-09 23:25:12,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-09 23:25:12,539 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:25:12,539 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 23:25:12,554 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 23:25:12,740 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 [2024-11-09 23:25:12,740 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:25:12,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:25:12,740 INFO L85 PathProgramCache]: Analyzing trace with hash -383317761, now seen corresponding path program 1 times [2024-11-09 23:25:12,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:25:12,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544860325] [2024-11-09 23:25:12,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:25:12,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:25:12,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:13,125 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-09 23:25:13,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:13,196 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-09 23:25:13,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:25:13,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544860325] [2024-11-09 23:25:13,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544860325] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:25:13,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:25:13,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-09 23:25:13,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814796273] [2024-11-09 23:25:13,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:25:13,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 23:25:13,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:25:13,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 23:25:13,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-09 23:25:13,199 INFO L87 Difference]: Start difference. First operand 459 states and 618 transitions. Second operand has 9 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 23:25:13,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:25:13,458 INFO L93 Difference]: Finished difference Result 802 states and 1079 transitions. [2024-11-09 23:25:13,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 23:25:13,459 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2024-11-09 23:25:13,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:25:13,461 INFO L225 Difference]: With dead ends: 802 [2024-11-09 23:25:13,461 INFO L226 Difference]: Without dead ends: 475 [2024-11-09 23:25:13,462 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2024-11-09 23:25:13,465 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 32 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 23:25:13,467 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 83 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 23:25:13,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2024-11-09 23:25:13,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 467. [2024-11-09 23:25:13,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 360 states have (on average 1.3) internal successors, (468), 389 states have internal predecessors, (468), 49 states have call successors, (49), 41 states have call predecessors, (49), 57 states have return successors, (109), 40 states have call predecessors, (109), 47 states have call successors, (109) [2024-11-09 23:25:13,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 626 transitions. [2024-11-09 23:25:13,506 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 626 transitions. Word has length 59 [2024-11-09 23:25:13,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:25:13,506 INFO L471 AbstractCegarLoop]: Abstraction has 467 states and 626 transitions. [2024-11-09 23:25:13,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 23:25:13,507 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 626 transitions. [2024-11-09 23:25:13,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-09 23:25:13,509 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:25:13,509 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 23:25:13,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 23:25:13,509 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:25:13,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:25:13,510 INFO L85 PathProgramCache]: Analyzing trace with hash -568458435, now seen corresponding path program 1 times [2024-11-09 23:25:13,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:25:13,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925177769] [2024-11-09 23:25:13,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:25:13,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:25:13,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:14,651 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 3 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:25:14,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:25:14,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925177769] [2024-11-09 23:25:14,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925177769] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 23:25:14,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586124348] [2024-11-09 23:25:14,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:25:14,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 23:25:14,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 23:25:14,653 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) [2024-11-09 23:25:14,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 23:25:14,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:14,832 INFO L255 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 227 conjuncts are in the unsatisfiable core [2024-11-09 23:25:14,840 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 23:25:14,846 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 [2024-11-09 23:25:14,849 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 [2024-11-09 23:25:15,010 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 [2024-11-09 23:25:15,106 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 [2024-11-09 23:25:15,258 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 [2024-11-09 23:25:15,601 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 23:25:15,601 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 23:25:15,752 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 35 treesize of output 27 [2024-11-09 23:25:16,337 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 21 proven. 27 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 23:25:16,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586124348] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 23:25:16,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 23:25:16,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 22, 15] total 51 [2024-11-09 23:25:16,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032397110] [2024-11-09 23:25:16,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 23:25:16,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-09 23:25:16,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:25:16,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-09 23:25:16,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=2378, Unknown=0, NotChecked=0, Total=2550 [2024-11-09 23:25:16,339 INFO L87 Difference]: Start difference. First operand 467 states and 626 transitions. Second operand has 51 states, 44 states have (on average 2.8636363636363638) internal successors, (126), 37 states have internal predecessors, (126), 15 states have call successors, (17), 15 states have call predecessors, (17), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:25:20,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:25:20,284 INFO L93 Difference]: Finished difference Result 1320 states and 1790 transitions. [2024-11-09 23:25:20,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2024-11-09 23:25:20,285 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 44 states have (on average 2.8636363636363638) internal successors, (126), 37 states have internal predecessors, (126), 15 states have call successors, (17), 15 states have call predecessors, (17), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-09 23:25:20,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:25:20,288 INFO L225 Difference]: With dead ends: 1320 [2024-11-09 23:25:20,289 INFO L226 Difference]: Without dead ends: 859 [2024-11-09 23:25:20,294 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4810 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1650, Invalid=16982, Unknown=0, NotChecked=0, Total=18632 [2024-11-09 23:25:20,294 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 622 mSDsluCounter, 1621 mSDsCounter, 0 mSdLazyCounter, 2428 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 1677 SdHoareTripleChecker+Invalid, 2577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 2428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-09 23:25:20,294 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [623 Valid, 1677 Invalid, 2577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 2428 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-09 23:25:20,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2024-11-09 23:25:20,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 712. [2024-11-09 23:25:20,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 565 states have (on average 1.2938053097345132) internal successors, (731), 609 states have internal predecessors, (731), 66 states have call successors, (66), 58 states have call predecessors, (66), 80 states have return successors, (137), 56 states have call predecessors, (137), 64 states have call successors, (137) [2024-11-09 23:25:20,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 934 transitions. [2024-11-09 23:25:20,349 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 934 transitions. Word has length 62 [2024-11-09 23:25:20,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:25:20,349 INFO L471 AbstractCegarLoop]: Abstraction has 712 states and 934 transitions. [2024-11-09 23:25:20,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 44 states have (on average 2.8636363636363638) internal successors, (126), 37 states have internal predecessors, (126), 15 states have call successors, (17), 15 states have call predecessors, (17), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:25:20,350 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 934 transitions. [2024-11-09 23:25:20,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-09 23:25:20,353 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:25:20,353 INFO L215 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 23:25:20,370 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 23:25:20,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 23:25:20,554 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:25:20,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:25:20,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1057188969, now seen corresponding path program 1 times [2024-11-09 23:25:20,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:25:20,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752155655] [2024-11-09 23:25:20,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:25:20,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:25:20,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:21,137 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-09 23:25:21,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:21,162 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-09 23:25:21,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:21,165 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-09 23:25:21,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:21,228 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 23:25:21,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:25:21,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752155655] [2024-11-09 23:25:21,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752155655] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:25:21,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:25:21,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-09 23:25:21,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042878248] [2024-11-09 23:25:21,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:25:21,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 23:25:21,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:25:21,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 23:25:21,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2024-11-09 23:25:21,230 INFO L87 Difference]: Start difference. First operand 712 states and 934 transitions. Second operand has 15 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 10 states have internal predecessors, (46), 8 states have call successors, (11), 6 states have call predecessors, (11), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 23:25:21,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:25:21,569 INFO L93 Difference]: Finished difference Result 1452 states and 1936 transitions. [2024-11-09 23:25:21,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-09 23:25:21,569 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 10 states have internal predecessors, (46), 8 states have call successors, (11), 6 states have call predecessors, (11), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 70 [2024-11-09 23:25:21,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:25:21,572 INFO L225 Difference]: With dead ends: 1452 [2024-11-09 23:25:21,572 INFO L226 Difference]: Without dead ends: 736 [2024-11-09 23:25:21,574 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=768, Unknown=0, NotChecked=0, Total=870 [2024-11-09 23:25:21,575 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 71 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 23:25:21,575 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 370 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 23:25:21,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2024-11-09 23:25:21,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 714. [2024-11-09 23:25:21,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 714 states, 566 states have (on average 1.284452296819788) internal successors, (727), 605 states have internal predecessors, (727), 66 states have call successors, (66), 58 states have call predecessors, (66), 81 states have return successors, (140), 58 states have call predecessors, (140), 64 states have call successors, (140) [2024-11-09 23:25:21,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 933 transitions. [2024-11-09 23:25:21,617 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 933 transitions. Word has length 70 [2024-11-09 23:25:21,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:25:21,618 INFO L471 AbstractCegarLoop]: Abstraction has 714 states and 933 transitions. [2024-11-09 23:25:21,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 10 states have internal predecessors, (46), 8 states have call successors, (11), 6 states have call predecessors, (11), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 23:25:21,618 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 933 transitions. [2024-11-09 23:25:21,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-09 23:25:21,619 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:25:21,620 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 23:25:21,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 23:25:21,620 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:25:21,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:25:21,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1424174473, now seen corresponding path program 1 times [2024-11-09 23:25:21,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:25:21,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274017743] [2024-11-09 23:25:21,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:25:21,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:25:21,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:22,081 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-09 23:25:22,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:22,144 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-09 23:25:22,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:22,151 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-09 23:25:22,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:22,153 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-09 23:25:22,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:25:22,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274017743] [2024-11-09 23:25:22,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274017743] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:25:22,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:25:22,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-09 23:25:22,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625954148] [2024-11-09 23:25:22,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:25:22,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 23:25:22,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:25:22,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 23:25:22,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2024-11-09 23:25:22,154 INFO L87 Difference]: Start difference. First operand 714 states and 933 transitions. Second operand has 14 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 9 states have internal predecessors, (44), 6 states have call successors, (11), 6 states have call predecessors, (11), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 23:25:22,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:25:22,528 INFO L93 Difference]: Finished difference Result 1422 states and 1865 transitions. [2024-11-09 23:25:22,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 23:25:22,529 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 9 states have internal predecessors, (44), 6 states have call successors, (11), 6 states have call predecessors, (11), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 70 [2024-11-09 23:25:22,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:25:22,533 INFO L225 Difference]: With dead ends: 1422 [2024-11-09 23:25:22,533 INFO L226 Difference]: Without dead ends: 706 [2024-11-09 23:25:22,535 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2024-11-09 23:25:22,536 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 91 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 23:25:22,536 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 169 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 23:25:22,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2024-11-09 23:25:22,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 684. [2024-11-09 23:25:22,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 550 states have (on average 1.2818181818181817) internal successors, (705), 583 states have internal predecessors, (705), 60 states have call successors, (60), 56 states have call predecessors, (60), 73 states have return successors, (118), 50 states have call predecessors, (118), 58 states have call successors, (118) [2024-11-09 23:25:22,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 883 transitions. [2024-11-09 23:25:22,588 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 883 transitions. Word has length 70 [2024-11-09 23:25:22,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:25:22,589 INFO L471 AbstractCegarLoop]: Abstraction has 684 states and 883 transitions. [2024-11-09 23:25:22,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 9 states have internal predecessors, (44), 6 states have call successors, (11), 6 states have call predecessors, (11), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 23:25:22,590 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 883 transitions. [2024-11-09 23:25:22,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-09 23:25:22,591 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:25:22,592 INFO L215 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 23:25:22,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 23:25:22,592 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:25:22,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:25:22,593 INFO L85 PathProgramCache]: Analyzing trace with hash 691111117, now seen corresponding path program 2 times [2024-11-09 23:25:22,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:25:22,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575111695] [2024-11-09 23:25:22,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:25:22,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:25:22,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:23,265 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-09 23:25:23,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:23,533 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-09 23:25:23,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:23,624 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-09 23:25:23,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:23,631 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-09 23:25:23,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:23,633 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 58 proven. 25 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 23:25:23,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:25:23,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575111695] [2024-11-09 23:25:23,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575111695] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 23:25:23,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916407073] [2024-11-09 23:25:23,634 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 23:25:23,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 23:25:23,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 23:25:23,635 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) [2024-11-09 23:25:23,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 23:25:23,869 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 23:25:23,869 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 23:25:23,876 INFO L255 TraceCheckSpWp]: Trace formula consists of 940 conjuncts, 119 conjuncts are in the unsatisfiable core [2024-11-09 23:25:23,882 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 23:25:23,886 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 [2024-11-09 23:25:23,921 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 [2024-11-09 23:25:24,156 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 8 treesize of output 1 [2024-11-09 23:25:24,450 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 56 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-09 23:25:24,450 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 23:25:24,660 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-11-09 23:25:24,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916407073] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 23:25:24,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 23:25:24,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 8] total 41 [2024-11-09 23:25:24,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993652974] [2024-11-09 23:25:24,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 23:25:24,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-09 23:25:24,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:25:24,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-09 23:25:24,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1533, Unknown=0, NotChecked=0, Total=1640 [2024-11-09 23:25:24,662 INFO L87 Difference]: Start difference. First operand 684 states and 883 transitions. Second operand has 41 states, 36 states have (on average 3.4444444444444446) internal successors, (124), 30 states have internal predecessors, (124), 15 states have call successors, (27), 14 states have call predecessors, (27), 4 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-09 23:25:28,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:25:28,044 INFO L93 Difference]: Finished difference Result 2107 states and 2897 transitions. [2024-11-09 23:25:28,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-11-09 23:25:28,044 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 36 states have (on average 3.4444444444444446) internal successors, (124), 30 states have internal predecessors, (124), 15 states have call successors, (27), 14 states have call predecessors, (27), 4 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) Word has length 84 [2024-11-09 23:25:28,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:25:28,050 INFO L225 Difference]: With dead ends: 2107 [2024-11-09 23:25:28,050 INFO L226 Difference]: Without dead ends: 1371 [2024-11-09 23:25:28,054 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 168 SyntacticMatches, 3 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3822 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1035, Invalid=13727, Unknown=0, NotChecked=0, Total=14762 [2024-11-09 23:25:28,055 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 321 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 1896 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 1060 SdHoareTripleChecker+Invalid, 2021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 23:25:28,055 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 1060 Invalid, 2021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1896 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 23:25:28,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1371 states. [2024-11-09 23:25:28,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1371 to 1179. [2024-11-09 23:25:28,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1179 states, 949 states have (on average 1.2276080084299263) internal successors, (1165), 1012 states have internal predecessors, (1165), 106 states have call successors, (106), 84 states have call predecessors, (106), 123 states have return successors, (252), 82 states have call predecessors, (252), 104 states have call successors, (252) [2024-11-09 23:25:28,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1523 transitions. [2024-11-09 23:25:28,163 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1523 transitions. Word has length 84 [2024-11-09 23:25:28,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:25:28,163 INFO L471 AbstractCegarLoop]: Abstraction has 1179 states and 1523 transitions. [2024-11-09 23:25:28,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 36 states have (on average 3.4444444444444446) internal successors, (124), 30 states have internal predecessors, (124), 15 states have call successors, (27), 14 states have call predecessors, (27), 4 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-09 23:25:28,163 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1523 transitions. [2024-11-09 23:25:28,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-09 23:25:28,165 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:25:28,166 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 23:25:28,180 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 23:25:28,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 23:25:28,367 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:25:28,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:25:28,367 INFO L85 PathProgramCache]: Analyzing trace with hash -28626130, now seen corresponding path program 1 times [2024-11-09 23:25:28,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:25:28,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90114684] [2024-11-09 23:25:28,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:25:28,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:25:28,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:28,998 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-09 23:25:29,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:29,089 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 23:25:29,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:29,146 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 23:25:29,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:29,150 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-11-09 23:25:29,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:25:29,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90114684] [2024-11-09 23:25:29,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90114684] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 23:25:29,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283620095] [2024-11-09 23:25:29,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:25:29,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 23:25:29,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 23:25:29,153 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) [2024-11-09 23:25:29,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 23:25:29,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:29,374 INFO L255 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 279 conjuncts are in the unsatisfiable core [2024-11-09 23:25:29,379 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 23:25:29,382 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 [2024-11-09 23:25:29,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 [2024-11-09 23:25:29,484 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 [2024-11-09 23:25:29,531 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 [2024-11-09 23:25:29,599 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 [2024-11-09 23:25:29,689 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 [2024-11-09 23:25:29,799 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 [2024-11-09 23:25:29,803 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 [2024-11-09 23:25:29,829 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-09 23:25:29,829 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 23:25:30,737 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 71 proven. 12 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-09 23:25:30,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283620095] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 23:25:30,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 23:25:30,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 21, 24] total 54 [2024-11-09 23:25:30,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65138114] [2024-11-09 23:25:30,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 23:25:30,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-09 23:25:30,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:25:30,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-09 23:25:30,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=2715, Unknown=0, NotChecked=0, Total=2862 [2024-11-09 23:25:30,739 INFO L87 Difference]: Start difference. First operand 1179 states and 1523 transitions. Second operand has 54 states, 42 states have (on average 2.3333333333333335) internal successors, (98), 38 states have internal predecessors, (98), 22 states have call successors, (29), 19 states have call predecessors, (29), 4 states have return successors, (9), 6 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-09 23:25:36,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:25:36,724 INFO L93 Difference]: Finished difference Result 2867 states and 3702 transitions. [2024-11-09 23:25:36,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2024-11-09 23:25:36,725 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 42 states have (on average 2.3333333333333335) internal successors, (98), 38 states have internal predecessors, (98), 22 states have call successors, (29), 19 states have call predecessors, (29), 4 states have return successors, (9), 6 states have call predecessors, (9), 7 states have call successors, (9) Word has length 94 [2024-11-09 23:25:36,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:25:36,732 INFO L225 Difference]: With dead ends: 2867 [2024-11-09 23:25:36,732 INFO L226 Difference]: Without dead ends: 2040 [2024-11-09 23:25:36,735 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 153 SyntacticMatches, 1 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4658 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=978, Invalid=18482, Unknown=0, NotChecked=0, Total=19460 [2024-11-09 23:25:36,735 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 450 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 5079 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 5236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 5079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-09 23:25:36,736 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 615 Invalid, 5236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 5079 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-09 23:25:36,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2040 states. [2024-11-09 23:25:36,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2040 to 1717. [2024-11-09 23:25:36,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1717 states, 1383 states have (on average 1.2248734634851772) internal successors, (1694), 1466 states have internal predecessors, (1694), 169 states have call successors, (169), 134 states have call predecessors, (169), 164 states have return successors, (364), 117 states have call predecessors, (364), 162 states have call successors, (364) [2024-11-09 23:25:36,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1717 states to 1717 states and 2227 transitions. [2024-11-09 23:25:36,861 INFO L78 Accepts]: Start accepts. Automaton has 1717 states and 2227 transitions. Word has length 94 [2024-11-09 23:25:36,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:25:36,861 INFO L471 AbstractCegarLoop]: Abstraction has 1717 states and 2227 transitions. [2024-11-09 23:25:36,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 42 states have (on average 2.3333333333333335) internal successors, (98), 38 states have internal predecessors, (98), 22 states have call successors, (29), 19 states have call predecessors, (29), 4 states have return successors, (9), 6 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-09 23:25:36,862 INFO L276 IsEmpty]: Start isEmpty. Operand 1717 states and 2227 transitions. [2024-11-09 23:25:36,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-09 23:25:36,864 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:25:36,864 INFO L215 NwaCegarLoop]: trace histogram [8, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 23:25:36,879 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 23:25:37,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 23:25:37,069 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:25:37,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:25:37,070 INFO L85 PathProgramCache]: Analyzing trace with hash 761608653, now seen corresponding path program 1 times [2024-11-09 23:25:37,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:25:37,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628820913] [2024-11-09 23:25:37,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:25:37,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:25:37,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:38,062 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-09 23:25:38,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:38,380 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-09 23:25:38,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:38,577 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-09 23:25:38,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:38,661 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-09 23:25:38,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:38,671 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-09 23:25:38,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:38,676 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-09 23:25:38,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:38,696 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 112 proven. 76 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-09 23:25:38,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:25:38,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628820913] [2024-11-09 23:25:38,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628820913] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 23:25:38,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143415710] [2024-11-09 23:25:38,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:25:38,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 23:25:38,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 23:25:38,698 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) [2024-11-09 23:25:38,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 23:25:38,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:38,936 INFO L255 TraceCheckSpWp]: Trace formula consists of 1108 conjuncts, 259 conjuncts are in the unsatisfiable core [2024-11-09 23:25:38,942 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 23:25:38,947 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 [2024-11-09 23:25:38,960 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 [2024-11-09 23:25:39,013 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 [2024-11-09 23:25:39,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 [2024-11-09 23:25:39,487 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 [2024-11-09 23:25:40,121 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 104 proven. 95 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-09 23:25:40,121 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 23:25:41,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143415710] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 23:25:41,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 23:25:41,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 29] total 42 [2024-11-09 23:25:41,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221281256] [2024-11-09 23:25:41,031 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 23:25:41,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-09 23:25:41,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:25:41,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-09 23:25:41,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=2804, Unknown=0, NotChecked=0, Total=2970 [2024-11-09 23:25:41,033 INFO L87 Difference]: Start difference. First operand 1717 states and 2227 transitions. Second operand has 42 states, 32 states have (on average 3.375) internal successors, (108), 34 states have internal predecessors, (108), 15 states have call successors, (18), 10 states have call predecessors, (18), 10 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) [2024-11-09 23:25:42,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:25:42,941 INFO L93 Difference]: Finished difference Result 3651 states and 4899 transitions. [2024-11-09 23:25:42,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-09 23:25:42,943 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 32 states have (on average 3.375) internal successors, (108), 34 states have internal predecessors, (108), 15 states have call successors, (18), 10 states have call predecessors, (18), 10 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) Word has length 112 [2024-11-09 23:25:42,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:25:42,952 INFO L225 Difference]: With dead ends: 3651 [2024-11-09 23:25:42,952 INFO L226 Difference]: Without dead ends: 1872 [2024-11-09 23:25:42,957 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1932 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=473, Invalid=7899, Unknown=0, NotChecked=0, Total=8372 [2024-11-09 23:25:42,957 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 125 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 1201 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 1264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 23:25:42,958 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 1029 Invalid, 1264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1201 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 23:25:42,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1872 states. [2024-11-09 23:25:43,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1872 to 1795. [2024-11-09 23:25:43,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1795 states, 1457 states have (on average 1.218943033630748) internal successors, (1776), 1526 states have internal predecessors, (1776), 174 states have call successors, (174), 138 states have call predecessors, (174), 163 states have return successors, (381), 130 states have call predecessors, (381), 167 states have call successors, (381) [2024-11-09 23:25:43,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1795 states to 1795 states and 2331 transitions. [2024-11-09 23:25:43,123 INFO L78 Accepts]: Start accepts. Automaton has 1795 states and 2331 transitions. Word has length 112 [2024-11-09 23:25:43,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:25:43,123 INFO L471 AbstractCegarLoop]: Abstraction has 1795 states and 2331 transitions. [2024-11-09 23:25:43,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 32 states have (on average 3.375) internal successors, (108), 34 states have internal predecessors, (108), 15 states have call successors, (18), 10 states have call predecessors, (18), 10 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) [2024-11-09 23:25:43,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1795 states and 2331 transitions. [2024-11-09 23:25:43,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-09 23:25:43,125 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:25:43,125 INFO L215 NwaCegarLoop]: trace histogram [11, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 7, 7, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 23:25:43,141 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 23:25:43,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 23:25:43,326 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:25:43,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:25:43,326 INFO L85 PathProgramCache]: Analyzing trace with hash 948512432, now seen corresponding path program 2 times [2024-11-09 23:25:43,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:25:43,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155281236] [2024-11-09 23:25:43,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:25:43,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:25:43,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:44,763 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-09 23:25:44,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:45,193 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-09 23:25:45,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:45,505 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-09 23:25:45,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:45,637 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-09 23:25:45,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:45,702 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-09 23:25:45,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:45,716 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-09 23:25:45,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:45,727 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-09 23:25:45,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:45,734 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-09 23:25:45,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:45,739 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-09 23:25:45,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:45,741 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 188 proven. 197 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2024-11-09 23:25:45,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:25:45,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155281236] [2024-11-09 23:25:45,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155281236] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 23:25:45,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145603565] [2024-11-09 23:25:45,742 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 23:25:45,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 23:25:45,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 23:25:45,743 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) [2024-11-09 23:25:45,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 23:25:45,987 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 23:25:45,988 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 23:25:45,993 INFO L255 TraceCheckSpWp]: Trace formula consists of 1365 conjuncts, 107 conjuncts are in the unsatisfiable core [2024-11-09 23:25:45,997 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 23:25:45,999 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 [2024-11-09 23:25:46,042 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 [2024-11-09 23:25:46,637 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 153 proven. 14 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2024-11-09 23:25:46,637 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 23:25:47,044 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2024-11-09 23:25:47,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145603565] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 23:25:47,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 23:25:47,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [23, 15] total 46 [2024-11-09 23:25:47,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006784575] [2024-11-09 23:25:47,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:25:47,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 23:25:47,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:25:47,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 23:25:47,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1954, Unknown=0, NotChecked=0, Total=2070 [2024-11-09 23:25:47,046 INFO L87 Difference]: Start difference. First operand 1795 states and 2331 transitions. Second operand has 14 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 10 states have internal predecessors, (46), 6 states have call successors, (9), 6 states have call predecessors, (9), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 23:25:47,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:25:47,582 INFO L93 Difference]: Finished difference Result 4438 states and 5924 transitions. [2024-11-09 23:25:47,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 23:25:47,583 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 10 states have internal predecessors, (46), 6 states have call successors, (9), 6 states have call predecessors, (9), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 154 [2024-11-09 23:25:47,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:25:47,593 INFO L225 Difference]: With dead ends: 4438 [2024-11-09 23:25:47,593 INFO L226 Difference]: Without dead ends: 2651 [2024-11-09 23:25:47,598 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 298 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=150, Invalid=2606, Unknown=0, NotChecked=0, Total=2756 [2024-11-09 23:25:47,599 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 56 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 23:25:47,599 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 467 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 23:25:47,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2651 states. [2024-11-09 23:25:47,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2651 to 2642. [2024-11-09 23:25:47,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2642 states, 2156 states have (on average 1.2105751391465678) internal successors, (2610), 2263 states have internal predecessors, (2610), 244 states have call successors, (244), 190 states have call predecessors, (244), 241 states have return successors, (544), 188 states have call predecessors, (544), 237 states have call successors, (544) [2024-11-09 23:25:47,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2642 states to 2642 states and 3398 transitions. [2024-11-09 23:25:47,810 INFO L78 Accepts]: Start accepts. Automaton has 2642 states and 3398 transitions. Word has length 154 [2024-11-09 23:25:47,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:25:47,811 INFO L471 AbstractCegarLoop]: Abstraction has 2642 states and 3398 transitions. [2024-11-09 23:25:47,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 10 states have internal predecessors, (46), 6 states have call successors, (9), 6 states have call predecessors, (9), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 23:25:47,811 INFO L276 IsEmpty]: Start isEmpty. Operand 2642 states and 3398 transitions. [2024-11-09 23:25:47,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-09 23:25:47,814 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:25:47,814 INFO L215 NwaCegarLoop]: trace histogram [11, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 7, 7, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 23:25:47,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-09 23:25:48,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-09 23:25:48,015 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:25:48,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:25:48,015 INFO L85 PathProgramCache]: Analyzing trace with hash -758989521, now seen corresponding path program 1 times [2024-11-09 23:25:48,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:25:48,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187450956] [2024-11-09 23:25:48,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:25:48,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:25:48,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:49,421 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-09 23:25:49,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:49,860 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-09 23:25:49,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:50,214 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-09 23:25:50,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:50,371 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-09 23:25:50,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:50,458 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-09 23:25:50,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:50,477 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-09 23:25:50,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:50,491 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-09 23:25:50,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:50,503 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-09 23:25:50,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:50,509 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-09 23:25:50,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:50,514 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 188 proven. 197 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2024-11-09 23:25:50,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:25:50,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187450956] [2024-11-09 23:25:50,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187450956] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 23:25:50,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592518386] [2024-11-09 23:25:50,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:25:50,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 23:25:50,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 23:25:50,516 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 23:25:50,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 23:25:50,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:50,820 INFO L255 TraceCheckSpWp]: Trace formula consists of 1350 conjuncts, 228 conjuncts are in the unsatisfiable core [2024-11-09 23:25:50,825 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 23:25:50,827 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 [2024-11-09 23:25:50,844 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 [2024-11-09 23:25:51,440 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 276 proven. 15 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2024-11-09 23:25:51,440 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 23:25:52,007 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 15 [2024-11-09 23:25:52,244 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 15 [2024-11-09 23:25:52,428 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 15 [2024-11-09 23:25:53,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2024-11-09 23:25:53,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592518386] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 23:25:53,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 23:25:53,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 20] total 31 [2024-11-09 23:25:53,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583207953] [2024-11-09 23:25:53,995 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 23:25:53,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-09 23:25:53,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:25:53,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-09 23:25:53,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=2664, Unknown=0, NotChecked=0, Total=2862 [2024-11-09 23:25:53,996 INFO L87 Difference]: Start difference. First operand 2642 states and 3398 transitions. Second operand has 31 states, 26 states have (on average 3.576923076923077) internal successors, (93), 25 states have internal predecessors, (93), 10 states have call successors, (14), 7 states have call predecessors, (14), 10 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-09 23:25:55,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:25:55,260 INFO L93 Difference]: Finished difference Result 5328 states and 7197 transitions. [2024-11-09 23:25:55,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-09 23:25:55,261 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 26 states have (on average 3.576923076923077) internal successors, (93), 25 states have internal predecessors, (93), 10 states have call successors, (14), 7 states have call predecessors, (14), 10 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) Word has length 154 [2024-11-09 23:25:55,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:25:55,276 INFO L225 Difference]: With dead ends: 5328 [2024-11-09 23:25:55,277 INFO L226 Difference]: Without dead ends: 2768 [2024-11-09 23:25:55,286 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1023 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=381, Invalid=4875, Unknown=0, NotChecked=0, Total=5256 [2024-11-09 23:25:55,287 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 64 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 23:25:55,287 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 527 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 23:25:55,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2768 states. [2024-11-09 23:25:55,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2768 to 2652. [2024-11-09 23:25:55,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2652 states, 2147 states have (on average 1.1988821611551002) internal successors, (2574), 2233 states have internal predecessors, (2574), 241 states have call successors, (241), 188 states have call predecessors, (241), 263 states have return successors, (613), 230 states have call predecessors, (613), 234 states have call successors, (613) [2024-11-09 23:25:55,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2652 states to 2652 states and 3428 transitions. [2024-11-09 23:25:55,541 INFO L78 Accepts]: Start accepts. Automaton has 2652 states and 3428 transitions. Word has length 154 [2024-11-09 23:25:55,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:25:55,541 INFO L471 AbstractCegarLoop]: Abstraction has 2652 states and 3428 transitions. [2024-11-09 23:25:55,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 26 states have (on average 3.576923076923077) internal successors, (93), 25 states have internal predecessors, (93), 10 states have call successors, (14), 7 states have call predecessors, (14), 10 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-09 23:25:55,541 INFO L276 IsEmpty]: Start isEmpty. Operand 2652 states and 3428 transitions. [2024-11-09 23:25:55,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-09 23:25:55,544 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:25:55,544 INFO L215 NwaCegarLoop]: trace histogram [14, 12, 12, 12, 12, 12, 11, 11, 11, 10, 9, 9, 9, 6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 23:25:55,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-09 23:25:55,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-09 23:25:55,746 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:25:55,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:25:55,746 INFO L85 PathProgramCache]: Analyzing trace with hash 281922438, now seen corresponding path program 2 times [2024-11-09 23:25:55,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:25:55,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981676837] [2024-11-09 23:25:55,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:25:55,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:25:55,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:57,457 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-09 23:25:57,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:58,197 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-09 23:25:58,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:58,857 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-09 23:25:58,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:59,353 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-09 23:25:59,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:59,581 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-09 23:25:59,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:59,902 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-09 23:25:59,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:59,916 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-11-09 23:25:59,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:59,939 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-09 23:25:59,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:59,954 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-09 23:25:59,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:59,967 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-09 23:25:59,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:59,975 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-09 23:25:59,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:59,984 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-09 23:25:59,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:25:59,987 INFO L134 CoverageAnalysis]: Checked inductivity of 963 backedges. 267 proven. 435 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2024-11-09 23:25:59,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:25:59,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981676837] [2024-11-09 23:25:59,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981676837] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 23:25:59,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931249673] [2024-11-09 23:25:59,988 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 23:25:59,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 23:25:59,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 23:25:59,990 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 23:25:59,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 23:26:00,410 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 23:26:00,410 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 23:26:00,419 INFO L255 TraceCheckSpWp]: Trace formula consists of 1607 conjuncts, 312 conjuncts are in the unsatisfiable core [2024-11-09 23:26:00,426 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 23:26:00,428 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 [2024-11-09 23:26:00,503 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 [2024-11-09 23:26:00,567 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 [2024-11-09 23:26:01,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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