./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_cohendiv.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3289d67d 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_nla-digbench/recursified_cohendiv.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c56685f9b6d3ffae51cc6068fd351a6683202b948d7f1ef6f1e8af6f2a55035a --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 04:59:35,352 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 04:59:35,443 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-17 04:59:35,449 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 04:59:35,451 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 04:59:35,487 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 04:59:35,488 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 04:59:35,489 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 04:59:35,489 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 04:59:35,491 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 04:59:35,491 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 04:59:35,492 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 04:59:35,492 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 04:59:35,494 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 04:59:35,495 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 04:59:35,495 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 04:59:35,496 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-17 04:59:35,496 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 04:59:35,496 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 04:59:35,497 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 04:59:35,497 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 04:59:35,498 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-17 04:59:35,498 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 04:59:35,498 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-17 04:59:35,499 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 04:59:35,499 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-17 04:59:35,499 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 04:59:35,500 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 04:59:35,500 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-17 04:59:35,500 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 04:59:35,501 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 04:59:35,501 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 04:59:35,501 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 04:59:35,502 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 04:59:35,502 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 04:59:35,502 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 04:59:35,502 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 04:59:35,503 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-17 04:59:35,503 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 04:59:35,503 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 04:59:35,503 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 04:59:35,504 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 04:59:35,504 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 04:59:35,505 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 04:59:35,505 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c56685f9b6d3ffae51cc6068fd351a6683202b948d7f1ef6f1e8af6f2a55035a [2024-11-17 04:59:35,771 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 04:59:35,796 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 04:59:35,799 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 04:59:35,800 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 04:59:35,801 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 04:59:35,802 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_nla-digbench/recursified_cohendiv.c [2024-11-17 04:59:37,223 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 04:59:37,400 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 04:59:37,401 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_cohendiv.c [2024-11-17 04:59:37,409 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2d5543b4/3cc50a0a79df4d2db164341184caec09/FLAG99843f126 [2024-11-17 04:59:37,424 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2d5543b4/3cc50a0a79df4d2db164341184caec09 [2024-11-17 04:59:37,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 04:59:37,429 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 04:59:37,430 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 04:59:37,430 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 04:59:37,437 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 04:59:37,438 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 04:59:37" (1/1) ... [2024-11-17 04:59:37,439 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ee3c29a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:59:37, skipping insertion in model container [2024-11-17 04:59:37,439 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 04:59:37" (1/1) ... [2024-11-17 04:59:37,461 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 04:59:37,660 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 04:59:37,681 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 04:59:37,718 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 04:59:37,748 INFO L204 MainTranslator]: Completed translation [2024-11-17 04:59:37,748 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:59:37 WrapperNode [2024-11-17 04:59:37,749 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 04:59:37,750 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 04:59:37,750 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 04:59:37,750 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 04:59:37,757 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:59:37" (1/1) ... [2024-11-17 04:59:37,767 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:59:37" (1/1) ... [2024-11-17 04:59:37,791 INFO L138 Inliner]: procedures = 17, calls = 85, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 81 [2024-11-17 04:59:37,792 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 04:59:37,793 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 04:59:37,793 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 04:59:37,793 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 04:59:37,804 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:59:37" (1/1) ... [2024-11-17 04:59:37,804 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:59:37" (1/1) ... [2024-11-17 04:59:37,811 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:59:37" (1/1) ... [2024-11-17 04:59:37,848 INFO L175 MemorySlicer]: Split 49 memory accesses to 7 slices as follows [2, 6, 8, 8, 10, 10, 5]. 20 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0]. The 12 writes are split as follows [0, 2, 3, 3, 2, 1, 1]. [2024-11-17 04:59:37,849 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:59:37" (1/1) ... [2024-11-17 04:59:37,849 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:59:37" (1/1) ... [2024-11-17 04:59:37,862 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:59:37" (1/1) ... [2024-11-17 04:59:37,866 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:59:37" (1/1) ... [2024-11-17 04:59:37,868 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:59:37" (1/1) ... [2024-11-17 04:59:37,873 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:59:37" (1/1) ... [2024-11-17 04:59:37,877 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 04:59:37,881 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 04:59:37,885 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 04:59:37,885 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 04:59:37,886 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:59:37" (1/1) ... [2024-11-17 04:59:37,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 04:59:37,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 04:59:37,935 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) [2024-11-17 04:59:37,940 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 [2024-11-17 04:59:37,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 04:59:37,995 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_40_to_51_0 [2024-11-17 04:59:37,995 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_40_to_51_0 [2024-11-17 04:59:37,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 04:59:37,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 04:59:37,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-17 04:59:37,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-17 04:59:37,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-17 04:59:37,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-17 04:59:37,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-17 04:59:37,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-17 04:59:37,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 04:59:37,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 04:59:37,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-17 04:59:37,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-17 04:59:37,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-17 04:59:38,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-17 04:59:38,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-17 04:59:38,000 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_31_to_54_0 [2024-11-17 04:59:38,001 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_31_to_54_0 [2024-11-17 04:59:38,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 04:59:38,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 04:59:38,002 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-17 04:59:38,002 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-17 04:59:38,002 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-17 04:59:38,003 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-17 04:59:38,003 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-17 04:59:38,003 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-17 04:59:38,003 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-17 04:59:38,004 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-17 04:59:38,004 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-17 04:59:38,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-17 04:59:38,138 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 04:59:38,143 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 04:59:38,552 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L106: call ULTIMATE.dealloc(main_~#x~0#1.base, main_~#x~0#1.offset);havoc main_~#x~0#1.base, main_~#x~0#1.offset;call ULTIMATE.dealloc(main_~#y~0#1.base, main_~#y~0#1.offset);havoc main_~#y~0#1.base, main_~#y~0#1.offset;call ULTIMATE.dealloc(main_~#q~0#1.base, main_~#q~0#1.offset);havoc main_~#q~0#1.base, main_~#q~0#1.offset;call ULTIMATE.dealloc(main_~#r~0#1.base, main_~#r~0#1.offset);havoc main_~#r~0#1.base, main_~#r~0#1.offset;call ULTIMATE.dealloc(main_~#a~0#1.base, main_~#a~0#1.offset);havoc main_~#a~0#1.base, main_~#a~0#1.offset;call ULTIMATE.dealloc(main_~#b~0#1.base, main_~#b~0#1.offset);havoc main_~#b~0#1.base, main_~#b~0#1.offset; [2024-11-17 04:59:38,626 INFO L? ?]: Removed 69 outVars from TransFormulas that were not future-live. [2024-11-17 04:59:38,626 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 04:59:38,649 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 04:59:38,649 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 04:59:38,649 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 04:59:38 BoogieIcfgContainer [2024-11-17 04:59:38,649 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 04:59:38,652 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 04:59:38,652 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 04:59:38,655 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 04:59:38,655 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 04:59:37" (1/3) ... [2024-11-17 04:59:38,656 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e438ebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 04:59:38, skipping insertion in model container [2024-11-17 04:59:38,656 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:59:37" (2/3) ... [2024-11-17 04:59:38,656 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e438ebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 04:59:38, skipping insertion in model container [2024-11-17 04:59:38,656 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 04:59:38" (3/3) ... [2024-11-17 04:59:38,658 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_cohendiv.c [2024-11-17 04:59:38,672 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 04:59:38,672 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2024-11-17 04:59:38,732 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 04:59:38,740 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;@73e2beab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 04:59:38,741 INFO L334 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2024-11-17 04:59:38,746 INFO L276 IsEmpty]: Start isEmpty. Operand has 111 states, 66 states have (on average 1.5454545454545454) internal successors, (102), 98 states have internal predecessors, (102), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-17 04:59:38,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-17 04:59:38,753 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 04:59:38,754 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 04:59:38,755 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_31_to_54_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_51_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_51_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-17 04:59:38,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 04:59:38,761 INFO L85 PathProgramCache]: Analyzing trace with hash 407115820, now seen corresponding path program 1 times [2024-11-17 04:59:38,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 04:59:38,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480711502] [2024-11-17 04:59:38,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 04:59:38,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 04:59:38,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 04:59:38,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 04:59:38,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 04:59:38,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480711502] [2024-11-17 04:59:38,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480711502] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 04:59:38,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 04:59:38,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 04:59:38,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964032507] [2024-11-17 04:59:38,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 04:59:39,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 04:59:39,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 04:59:39,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 04:59:39,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 04:59:39,035 INFO L87 Difference]: Start difference. First operand has 111 states, 66 states have (on average 1.5454545454545454) internal successors, (102), 98 states have internal predecessors, (102), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 04:59:39,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 04:59:39,077 INFO L93 Difference]: Finished difference Result 218 states and 254 transitions. [2024-11-17 04:59:39,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-17 04:59:39,080 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-17 04:59:39,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 04:59:39,087 INFO L225 Difference]: With dead ends: 218 [2024-11-17 04:59:39,088 INFO L226 Difference]: Without dead ends: 104 [2024-11-17 04:59:39,092 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 04:59:39,096 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 04:59:39,097 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 04:59:39,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-17 04:59:39,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2024-11-17 04:59:39,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 61 states have (on average 1.5081967213114753) internal successors, (92), 92 states have internal predecessors, (92), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-17 04:59:39,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 112 transitions. [2024-11-17 04:59:39,144 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 112 transitions. Word has length 8 [2024-11-17 04:59:39,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 04:59:39,145 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 112 transitions. [2024-11-17 04:59:39,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 04:59:39,145 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 112 transitions. [2024-11-17 04:59:39,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-17 04:59:39,146 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 04:59:39,146 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 04:59:39,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 04:59:39,146 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_31_to_54_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_51_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_51_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-17 04:59:39,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 04:59:39,148 INFO L85 PathProgramCache]: Analyzing trace with hash 435744971, now seen corresponding path program 1 times [2024-11-17 04:59:39,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 04:59:39,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279287962] [2024-11-17 04:59:39,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 04:59:39,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 04:59:39,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 04:59:39,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [525917576] [2024-11-17 04:59:39,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 04:59:39,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 04:59:39,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 04:59:39,220 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) [2024-11-17 04:59:39,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 04:59:39,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 04:59:39,340 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-17 04:59:39,346 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 04:59:39,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-17 04:59:39,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-17 04:59:39,603 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-17 04:59:39,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 04:59:39,620 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 04:59:39,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 04:59:39,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279287962] [2024-11-17 04:59:39,621 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 04:59:39,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525917576] [2024-11-17 04:59:39,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525917576] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 04:59:39,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 04:59:39,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-17 04:59:39,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217107330] [2024-11-17 04:59:39,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 04:59:39,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-17 04:59:39,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 04:59:39,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-17 04:59:39,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-17 04:59:39,627 INFO L87 Difference]: Start difference. First operand 104 states and 112 transitions. Second operand has 8 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 7 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 04:59:39,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 04:59:39,871 INFO L93 Difference]: Finished difference Result 127 states and 138 transitions. [2024-11-17 04:59:39,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 04:59:39,872 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 7 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-17 04:59:39,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 04:59:39,874 INFO L225 Difference]: With dead ends: 127 [2024-11-17 04:59:39,874 INFO L226 Difference]: Without dead ends: 126 [2024-11-17 04:59:39,875 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-17 04:59:39,877 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 37 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 04:59:39,878 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 653 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 04:59:39,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-11-17 04:59:39,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 120. [2024-11-17 04:59:39,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 74 states have (on average 1.5) internal successors, (111), 105 states have internal predecessors, (111), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-17 04:59:39,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 136 transitions. [2024-11-17 04:59:39,892 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 136 transitions. Word has length 8 [2024-11-17 04:59:39,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 04:59:39,895 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 136 transitions. [2024-11-17 04:59:39,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 7 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 04:59:39,896 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 136 transitions. [2024-11-17 04:59:39,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-17 04:59:39,896 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 04:59:39,896 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 04:59:39,916 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-17 04:59:40,097 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 [2024-11-17 04:59:40,097 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_31_to_54_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_51_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_51_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-17 04:59:40,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 04:59:40,098 INFO L85 PathProgramCache]: Analyzing trace with hash 623192266, now seen corresponding path program 1 times [2024-11-17 04:59:40,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 04:59:40,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74343451] [2024-11-17 04:59:40,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 04:59:40,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 04:59:40,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 04:59:40,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1959758426] [2024-11-17 04:59:40,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 04:59:40,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 04:59:40,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 04:59:40,145 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) [2024-11-17 04:59:40,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 04:59:40,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 04:59:40,263 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-17 04:59:40,265 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 04:59:40,272 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 [2024-11-17 04:59:40,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 04:59:40,317 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 04:59:40,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 04:59:40,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74343451] [2024-11-17 04:59:40,318 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 04:59:40,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959758426] [2024-11-17 04:59:40,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959758426] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 04:59:40,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 04:59:40,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 04:59:40,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689065878] [2024-11-17 04:59:40,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 04:59:40,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 04:59:40,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 04:59:40,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 04:59:40,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-17 04:59:40,322 INFO L87 Difference]: Start difference. First operand 120 states and 136 transitions. Second operand has 6 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 04:59:40,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 04:59:40,468 INFO L93 Difference]: Finished difference Result 135 states and 145 transitions. [2024-11-17 04:59:40,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 04:59:40,469 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-17 04:59:40,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 04:59:40,470 INFO L225 Difference]: With dead ends: 135 [2024-11-17 04:59:40,470 INFO L226 Difference]: Without dead ends: 134 [2024-11-17 04:59:40,471 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-17 04:59:40,472 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 43 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 04:59:40,475 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 500 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 04:59:40,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-11-17 04:59:40,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 120. [2024-11-17 04:59:40,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 74 states have (on average 1.4864864864864864) internal successors, (110), 105 states have internal predecessors, (110), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-17 04:59:40,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 135 transitions. [2024-11-17 04:59:40,496 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 135 transitions. Word has length 9 [2024-11-17 04:59:40,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 04:59:40,496 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 135 transitions. [2024-11-17 04:59:40,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 04:59:40,496 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 135 transitions. [2024-11-17 04:59:40,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-17 04:59:40,497 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 04:59:40,497 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 04:59:40,516 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-17 04:59:40,697 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 [2024-11-17 04:59:40,698 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_31_to_54_0Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_51_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_51_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-17 04:59:40,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 04:59:40,699 INFO L85 PathProgramCache]: Analyzing trace with hash 699704814, now seen corresponding path program 1 times [2024-11-17 04:59:40,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 04:59:40,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437836880] [2024-11-17 04:59:40,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 04:59:40,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 04:59:40,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 04:59:40,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1811890677] [2024-11-17 04:59:40,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 04:59:40,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 04:59:40,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 04:59:40,779 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) [2024-11-17 04:59:40,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-17 04:59:40,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 04:59:40,892 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-17 04:59:40,895 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 04:59:40,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-17 04:59:41,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-17 04:59:41,258 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 15 treesize of output 7 [2024-11-17 04:59:41,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-17 04:59:41,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 04:59:41,284 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 04:59:41,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 04:59:41,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437836880] [2024-11-17 04:59:41,285 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 04:59:41,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811890677] [2024-11-17 04:59:41,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811890677] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 04:59:41,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 04:59:41,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-17 04:59:41,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888152557] [2024-11-17 04:59:41,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 04:59:41,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-17 04:59:41,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 04:59:41,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-17 04:59:41,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-17 04:59:41,288 INFO L87 Difference]: Start difference. First operand 120 states and 135 transitions. Second operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 04:59:45,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-17 04:59:49,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-17 04:59:53,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-17 04:59:57,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-17 05:00:01,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-17 05:00:01,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:00:01,710 INFO L93 Difference]: Finished difference Result 200 states and 215 transitions. [2024-11-17 05:00:01,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-17 05:00:01,711 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2024-11-17 05:00:01,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:00:01,712 INFO L225 Difference]: With dead ends: 200 [2024-11-17 05:00:01,712 INFO L226 Difference]: Without dead ends: 199 [2024-11-17 05:00:01,713 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-11-17 05:00:01,714 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 115 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 11 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.3s IncrementalHoareTripleChecker+Time [2024-11-17 05:00:01,714 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 715 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 284 Invalid, 5 Unknown, 0 Unchecked, 20.3s Time] [2024-11-17 05:00:01,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2024-11-17 05:00:01,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 159. [2024-11-17 05:00:01,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 105 states have (on average 1.4952380952380953) internal successors, (157), 138 states have internal predecessors, (157), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (19), 17 states have call predecessors, (19), 18 states have call successors, (19) [2024-11-17 05:00:01,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 194 transitions. [2024-11-17 05:00:01,729 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 194 transitions. Word has length 16 [2024-11-17 05:00:01,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:00:01,730 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 194 transitions. [2024-11-17 05:00:01,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 05:00:01,730 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 194 transitions. [2024-11-17 05:00:01,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-17 05:00:01,731 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:00:01,731 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:00:01,750 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-17 05:00:01,931 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 [2024-11-17 05:00:01,932 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_31_to_54_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_51_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_51_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-17 05:00:01,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:00:01,933 INFO L85 PathProgramCache]: Analyzing trace with hash 216012801, now seen corresponding path program 1 times [2024-11-17 05:00:01,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:00:01,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951747179] [2024-11-17 05:00:01,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:00:01,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:00:01,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:00:01,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [284609057] [2024-11-17 05:00:01,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:00:01,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:00:01,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:00:01,995 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) [2024-11-17 05:00:01,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-17 05:00:02,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:00:02,099 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-17 05:00:02,101 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:00:02,105 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 [2024-11-17 05:00:02,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:00:02,173 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 05:00:02,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:00:02,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951747179] [2024-11-17 05:00:02,174 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:00:02,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284609057] [2024-11-17 05:00:02,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284609057] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:00:02,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:00:02,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-17 05:00:02,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319363924] [2024-11-17 05:00:02,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:00:02,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 05:00:02,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:00:02,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 05:00:02,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-17 05:00:02,176 INFO L87 Difference]: Start difference. First operand 159 states and 194 transitions. Second operand has 7 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 05:00:02,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:00:02,357 INFO L93 Difference]: Finished difference Result 199 states and 214 transitions. [2024-11-17 05:00:02,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 05:00:02,358 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-11-17 05:00:02,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:00:02,360 INFO L225 Difference]: With dead ends: 199 [2024-11-17 05:00:02,360 INFO L226 Difference]: Without dead ends: 198 [2024-11-17 05:00:02,360 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-17 05:00:02,361 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 116 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 05:00:02,361 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 554 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 05:00:02,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-17 05:00:02,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 159. [2024-11-17 05:00:02,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 105 states have (on average 1.4857142857142858) internal successors, (156), 138 states have internal predecessors, (156), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (19), 17 states have call predecessors, (19), 18 states have call successors, (19) [2024-11-17 05:00:02,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 193 transitions. [2024-11-17 05:00:02,384 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 193 transitions. Word has length 17 [2024-11-17 05:00:02,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:00:02,384 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 193 transitions. [2024-11-17 05:00:02,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 05:00:02,384 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 193 transitions. [2024-11-17 05:00:02,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-17 05:00:02,385 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:00:02,385 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:00:02,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-17 05:00:02,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:00:02,586 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_31_to_54_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_51_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_51_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-17 05:00:02,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:00:02,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1429873023, now seen corresponding path program 1 times [2024-11-17 05:00:02,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:00:02,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55398407] [2024-11-17 05:00:02,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:00:02,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:00:02,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:00:02,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1795261091] [2024-11-17 05:00:02,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:00:02,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:00:02,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:00:02,627 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) [2024-11-17 05:00:02,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-17 05:00:02,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:00:02,732 INFO L255 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-17 05:00:02,735 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:00:02,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-17 05:00:02,759 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 [2024-11-17 05:00:02,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2024-11-17 05:00:02,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-17 05:00:03,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-17 05:00:03,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:00:03,047 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 05:00:03,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:00:03,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55398407] [2024-11-17 05:00:03,047 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:00:03,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795261091] [2024-11-17 05:00:03,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795261091] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:00:03,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:00:03,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-17 05:00:03,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376324942] [2024-11-17 05:00:03,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:00:03,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-17 05:00:03,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:00:03,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-17 05:00:03,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-17 05:00:03,049 INFO L87 Difference]: Start difference. First operand 159 states and 193 transitions. Second operand has 9 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 05:00:07,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-17 05:00:07,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:00:07,361 INFO L93 Difference]: Finished difference Result 193 states and 208 transitions. [2024-11-17 05:00:07,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-17 05:00:07,362 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2024-11-17 05:00:07,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:00:07,363 INFO L225 Difference]: With dead ends: 193 [2024-11-17 05:00:07,363 INFO L226 Difference]: Without dead ends: 192 [2024-11-17 05:00:07,364 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2024-11-17 05:00:07,366 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 124 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-17 05:00:07,367 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 605 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 207 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2024-11-17 05:00:07,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-11-17 05:00:07,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 159. [2024-11-17 05:00:07,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 105 states have (on average 1.4761904761904763) internal successors, (155), 138 states have internal predecessors, (155), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (19), 17 states have call predecessors, (19), 18 states have call successors, (19) [2024-11-17 05:00:07,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 192 transitions. [2024-11-17 05:00:07,390 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 192 transitions. Word has length 19 [2024-11-17 05:00:07,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:00:07,390 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 192 transitions. [2024-11-17 05:00:07,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 05:00:07,390 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 192 transitions. [2024-11-17 05:00:07,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-17 05:00:07,391 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:00:07,391 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] [2024-11-17 05:00:07,412 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-17 05:00:07,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:00:07,592 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_31_to_54_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_51_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_51_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-17 05:00:07,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:00:07,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1376390795, now seen corresponding path program 1 times [2024-11-17 05:00:07,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:00:07,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770614911] [2024-11-17 05:00:07,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:00:07,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:00:07,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:00:07,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1969918439] [2024-11-17 05:00:07,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:00:07,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:00:07,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:00:07,653 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) [2024-11-17 05:00:07,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-17 05:00:07,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:00:07,762 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-17 05:00:07,765 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:00:07,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-17 05:00:07,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-11-17 05:00:07,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-17 05:00:07,794 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 [2024-11-17 05:00:07,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-17 05:00:07,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 05:00:07,961 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 05:00:07,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:00:07,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770614911] [2024-11-17 05:00:07,962 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:00:07,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969918439] [2024-11-17 05:00:07,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969918439] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:00:07,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:00:07,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-17 05:00:07,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900381614] [2024-11-17 05:00:07,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:00:07,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-17 05:00:07,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:00:07,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-17 05:00:07,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-17 05:00:07,963 INFO L87 Difference]: Start difference. First operand 159 states and 192 transitions. Second operand has 9 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 05:00:12,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-17 05:00:12,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:00:12,241 INFO L93 Difference]: Finished difference Result 192 states and 207 transitions. [2024-11-17 05:00:12,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-17 05:00:12,242 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2024-11-17 05:00:12,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:00:12,243 INFO L225 Difference]: With dead ends: 192 [2024-11-17 05:00:12,243 INFO L226 Difference]: Without dead ends: 191 [2024-11-17 05:00:12,244 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2024-11-17 05:00:12,244 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 120 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-17 05:00:12,245 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 608 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 204 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2024-11-17 05:00:12,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-11-17 05:00:12,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 159. [2024-11-17 05:00:12,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 105 states have (on average 1.4666666666666666) internal successors, (154), 138 states have internal predecessors, (154), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (19), 17 states have call predecessors, (19), 18 states have call successors, (19) [2024-11-17 05:00:12,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 191 transitions. [2024-11-17 05:00:12,257 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 191 transitions. Word has length 20 [2024-11-17 05:00:12,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:00:12,257 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 191 transitions. [2024-11-17 05:00:12,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 05:00:12,257 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 191 transitions. [2024-11-17 05:00:12,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-17 05:00:12,258 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:00:12,258 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:00:12,276 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-17 05:00:12,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:00:12,459 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_40_to_51_0Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_51_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_51_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-17 05:00:12,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:00:12,459 INFO L85 PathProgramCache]: Analyzing trace with hash -38679720, now seen corresponding path program 1 times [2024-11-17 05:00:12,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:00:12,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714022727] [2024-11-17 05:00:12,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:00:12,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:00:12,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:00:12,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1780083170] [2024-11-17 05:00:12,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:00:12,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:00:12,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:00:12,506 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) [2024-11-17 05:00:12,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-17 05:00:12,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:00:12,636 INFO L255 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-17 05:00:12,639 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:00:12,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-17 05:00:12,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-17 05:00:12,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-17 05:00:12,923 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-17 05:00:12,923 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 05:00:12,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:00:12,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714022727] [2024-11-17 05:00:12,923 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:00:12,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780083170] [2024-11-17 05:00:12,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780083170] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:00:12,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:00:12,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-17 05:00:12,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676974582] [2024-11-17 05:00:12,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:00:12,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-17 05:00:12,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:00:12,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-17 05:00:12,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-17 05:00:12,927 INFO L87 Difference]: Start difference. First operand 159 states and 191 transitions. Second operand has 13 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-17 05:00:16,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-17 05:00:17,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:00:17,354 INFO L93 Difference]: Finished difference Result 245 states and 302 transitions. [2024-11-17 05:00:17,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-17 05:00:17,355 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 31 [2024-11-17 05:00:17,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:00:17,358 INFO L225 Difference]: With dead ends: 245 [2024-11-17 05:00:17,359 INFO L226 Difference]: Without dead ends: 244 [2024-11-17 05:00:17,359 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2024-11-17 05:00:17,360 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 221 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-17 05:00:17,360 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 714 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 358 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2024-11-17 05:00:17,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2024-11-17 05:00:17,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 199. [2024-11-17 05:00:17,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 137 states have (on average 1.4744525547445255) internal successors, (202), 170 states have internal predecessors, (202), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (27), 23 states have call predecessors, (27), 24 states have call successors, (27) [2024-11-17 05:00:17,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 253 transitions. [2024-11-17 05:00:17,382 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 253 transitions. Word has length 31 [2024-11-17 05:00:17,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:00:17,382 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 253 transitions. [2024-11-17 05:00:17,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-17 05:00:17,383 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 253 transitions. [2024-11-17 05:00:17,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-17 05:00:17,384 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:00:17,384 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:00:17,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-17 05:00:17,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:00:17,588 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_51_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_51_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-17 05:00:17,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:00:17,589 INFO L85 PathProgramCache]: Analyzing trace with hash -41660872, now seen corresponding path program 1 times [2024-11-17 05:00:17,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:00:17,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210131530] [2024-11-17 05:00:17,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:00:17,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:00:17,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:00:17,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1187581022] [2024-11-17 05:00:17,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:00:17,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:00:17,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:00:17,620 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) [2024-11-17 05:00:17,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-17 05:00:17,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:00:17,737 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-17 05:00:17,739 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:00:17,748 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 [2024-11-17 05:00:17,781 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 05:00:17,781 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 05:00:17,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:00:17,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210131530] [2024-11-17 05:00:17,781 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:00:17,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187581022] [2024-11-17 05:00:17,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187581022] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:00:17,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:00:17,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 05:00:17,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563688712] [2024-11-17 05:00:17,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:00:17,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 05:00:17,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:00:17,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 05:00:17,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-17 05:00:17,783 INFO L87 Difference]: Start difference. First operand 199 states and 253 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-17 05:00:18,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:00:18,040 INFO L93 Difference]: Finished difference Result 209 states and 264 transitions. [2024-11-17 05:00:18,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 05:00:18,042 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2024-11-17 05:00:18,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:00:18,043 INFO L225 Difference]: With dead ends: 209 [2024-11-17 05:00:18,043 INFO L226 Difference]: Without dead ends: 207 [2024-11-17 05:00:18,043 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-17 05:00:18,044 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 74 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 05:00:18,044 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 120 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 05:00:18,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-11-17 05:00:18,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 204. [2024-11-17 05:00:18,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 141 states have (on average 1.4609929078014185) internal successors, (206), 173 states have internal predecessors, (206), 24 states have call successors, (24), 8 states have call predecessors, (24), 9 states have return successors, (28), 24 states have call predecessors, (28), 24 states have call successors, (28) [2024-11-17 05:00:18,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 258 transitions. [2024-11-17 05:00:18,066 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 258 transitions. Word has length 31 [2024-11-17 05:00:18,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:00:18,066 INFO L471 AbstractCegarLoop]: Abstraction has 204 states and 258 transitions. [2024-11-17 05:00:18,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-17 05:00:18,067 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 258 transitions. [2024-11-17 05:00:18,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-17 05:00:18,068 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:00:18,068 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:00:18,093 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-17 05:00:18,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-17 05:00:18,269 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_40_to_51_0Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_51_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_51_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-17 05:00:18,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:00:18,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1199071305, now seen corresponding path program 1 times [2024-11-17 05:00:18,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:00:18,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349499980] [2024-11-17 05:00:18,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:00:18,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:00:18,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:00:18,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [332498267] [2024-11-17 05:00:18,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:00:18,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:00:18,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:00:18,301 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) [2024-11-17 05:00:18,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-17 05:00:18,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:00:18,427 INFO L255 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-11-17 05:00:18,430 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:00:18,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-17 05:00:18,483 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 [2024-11-17 05:00:18,804 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 [2024-11-17 05:00:18,809 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 [2024-11-17 05:00:18,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-17 05:00:18,920 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-17 05:00:18,920 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 05:00:18,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:00:18,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349499980] [2024-11-17 05:00:18,921 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:00:18,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332498267] [2024-11-17 05:00:18,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332498267] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:00:18,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:00:18,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-17 05:00:18,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218674499] [2024-11-17 05:00:18,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:00:18,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-17 05:00:18,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:00:18,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-17 05:00:18,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-17 05:00:18,922 INFO L87 Difference]: Start difference. First operand 204 states and 258 transitions. Second operand has 14 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 12 states have internal predecessors, (26), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-17 05:00:19,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:00:19,389 INFO L93 Difference]: Finished difference Result 248 states and 296 transitions. [2024-11-17 05:00:19,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-17 05:00:19,389 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 12 states have internal predecessors, (26), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 32 [2024-11-17 05:00:19,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:00:19,391 INFO L225 Difference]: With dead ends: 248 [2024-11-17 05:00:19,391 INFO L226 Difference]: Without dead ends: 247 [2024-11-17 05:00:19,392 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2024-11-17 05:00:19,392 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 107 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-17 05:00:19,393 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 803 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-17 05:00:19,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2024-11-17 05:00:19,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 208. [2024-11-17 05:00:19,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 144 states have (on average 1.4444444444444444) internal successors, (208), 176 states have internal predecessors, (208), 24 states have call successors, (24), 9 states have call predecessors, (24), 10 states have return successors, (28), 24 states have call predecessors, (28), 24 states have call successors, (28) [2024-11-17 05:00:19,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 260 transitions. [2024-11-17 05:00:19,408 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 260 transitions. Word has length 32 [2024-11-17 05:00:19,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:00:19,409 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 260 transitions. [2024-11-17 05:00:19,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 12 states have internal predecessors, (26), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-17 05:00:19,409 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 260 transitions. [2024-11-17 05:00:19,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-17 05:00:19,410 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:00:19,410 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:00:19,426 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-17 05:00:19,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-17 05:00:19,615 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_51_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_51_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-17 05:00:19,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:00:19,615 INFO L85 PathProgramCache]: Analyzing trace with hash 126581261, now seen corresponding path program 1 times [2024-11-17 05:00:19,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:00:19,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087069555] [2024-11-17 05:00:19,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:00:19,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:00:19,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:00:19,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1448689699] [2024-11-17 05:00:19,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:00:19,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:00:19,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:00:19,642 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) [2024-11-17 05:00:19,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-17 05:00:19,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:00:19,772 INFO L255 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-17 05:00:19,774 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:00:19,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-17 05:00:19,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-17 05:00:19,795 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 [2024-11-17 05:00:19,799 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 21 treesize of output 13 [2024-11-17 05:00:19,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-17 05:00:19,899 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 05:00:19,899 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 05:00:19,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:00:19,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087069555] [2024-11-17 05:00:19,899 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:00:19,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448689699] [2024-11-17 05:00:19,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448689699] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:00:19,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:00:19,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-17 05:00:19,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101119044] [2024-11-17 05:00:19,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:00:19,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 05:00:19,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:00:19,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 05:00:19,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-17 05:00:19,901 INFO L87 Difference]: Start difference. First operand 208 states and 260 transitions. Second operand has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-17 05:00:20,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:00:20,238 INFO L93 Difference]: Finished difference Result 212 states and 264 transitions. [2024-11-17 05:00:20,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 05:00:20,239 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 34 [2024-11-17 05:00:20,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:00:20,241 INFO L225 Difference]: With dead ends: 212 [2024-11-17 05:00:20,241 INFO L226 Difference]: Without dead ends: 211 [2024-11-17 05:00:20,241 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-17 05:00:20,242 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 67 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-17 05:00:20,242 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 178 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-17 05:00:20,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-11-17 05:00:20,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 210. [2024-11-17 05:00:20,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 146 states have (on average 1.4383561643835616) internal successors, (210), 178 states have internal predecessors, (210), 24 states have call successors, (24), 9 states have call predecessors, (24), 10 states have return successors, (28), 24 states have call predecessors, (28), 24 states have call successors, (28) [2024-11-17 05:00:20,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 262 transitions. [2024-11-17 05:00:20,266 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 262 transitions. Word has length 34 [2024-11-17 05:00:20,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:00:20,268 INFO L471 AbstractCegarLoop]: Abstraction has 210 states and 262 transitions. [2024-11-17 05:00:20,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-17 05:00:20,268 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 262 transitions. [2024-11-17 05:00:20,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-17 05:00:20,269 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:00:20,269 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:00:20,290 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-17 05:00:20,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-17 05:00:20,474 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_51_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_51_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-17 05:00:20,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:00:20,474 INFO L85 PathProgramCache]: Analyzing trace with hash -370948139, now seen corresponding path program 1 times [2024-11-17 05:00:20,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:00:20,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240852937] [2024-11-17 05:00:20,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:00:20,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:00:20,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:00:20,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1331892922] [2024-11-17 05:00:20,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:00:20,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:00:20,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:00:20,506 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 05:00:20,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-17 05:00:20,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:00:20,625 INFO L255 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-17 05:00:20,640 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:00:20,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-17 05:00:20,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-17 05:00:20,663 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 [2024-11-17 05:00:20,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-11-17 05:00:20,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-17 05:00:20,900 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 [2024-11-17 05:00:20,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-17 05:00:20,933 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 05:00:20,933 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 05:00:20,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:00:20,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240852937] [2024-11-17 05:00:20,933 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:00:20,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331892922] [2024-11-17 05:00:20,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331892922] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:00:20,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:00:20,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-17 05:00:20,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89667110] [2024-11-17 05:00:20,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:00:20,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-17 05:00:20,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:00:20,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-17 05:00:20,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-17 05:00:20,935 INFO L87 Difference]: Start difference. First operand 210 states and 262 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-17 05:00:21,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:00:21,329 INFO L93 Difference]: Finished difference Result 212 states and 263 transitions. [2024-11-17 05:00:21,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 05:00:21,329 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2024-11-17 05:00:21,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:00:21,331 INFO L225 Difference]: With dead ends: 212 [2024-11-17 05:00:21,331 INFO L226 Difference]: Without dead ends: 203 [2024-11-17 05:00:21,331 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-17 05:00:21,332 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 69 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-17 05:00:21,332 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 181 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-17 05:00:21,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2024-11-17 05:00:21,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2024-11-17 05:00:21,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 140 states have (on average 1.45) internal successors, (203), 172 states have internal predecessors, (203), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (27), 23 states have call predecessors, (27), 24 states have call successors, (27) [2024-11-17 05:00:21,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 254 transitions. [2024-11-17 05:00:21,353 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 254 transitions. Word has length 35 [2024-11-17 05:00:21,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:00:21,353 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 254 transitions. [2024-11-17 05:00:21,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-17 05:00:21,353 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 254 transitions. [2024-11-17 05:00:21,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-17 05:00:21,354 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:00:21,354 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:00:21,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-17 05:00:21,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-17 05:00:21,555 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting func_to_recursive_line_40_to_51_0Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_51_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_51_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-17 05:00:21,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:00:21,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1291453039, now seen corresponding path program 1 times [2024-11-17 05:00:21,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:00:21,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528014263] [2024-11-17 05:00:21,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:00:21,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:00:21,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 05:00:21,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1022984700] [2024-11-17 05:00:21,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:00:21,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 05:00:21,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 05:00:21,587 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 05:00:21,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-17 05:00:21,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 05:00:21,723 INFO L255 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-17 05:00:21,724 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 05:00:21,729 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 [2024-11-17 05:00:21,868 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-17 05:00:21,868 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 05:00:21,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 05:00:21,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528014263] [2024-11-17 05:00:21,869 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 05:00:21,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022984700] [2024-11-17 05:00:21,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022984700] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 05:00:21,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 05:00:21,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-17 05:00:21,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266390419] [2024-11-17 05:00:21,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 05:00:21,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-17 05:00:21,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 05:00:21,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-17 05:00:21,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-17 05:00:21,870 INFO L87 Difference]: Start difference. First operand 203 states and 254 transitions. Second operand has 9 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-17 05:00:22,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 05:00:22,081 INFO L93 Difference]: Finished difference Result 230 states and 265 transitions. [2024-11-17 05:00:22,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-17 05:00:22,081 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2024-11-17 05:00:22,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 05:00:22,082 INFO L225 Difference]: With dead ends: 230 [2024-11-17 05:00:22,082 INFO L226 Difference]: Without dead ends: 228 [2024-11-17 05:00:22,083 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 26 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-11-17 05:00:22,083 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 161 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 05:00:22,083 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 508 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 05:00:22,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-11-17 05:00:22,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 203. [2024-11-17 05:00:22,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 140 states have (on average 1.4214285714285715) internal successors, (199), 172 states have internal predecessors, (199), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (27), 23 states have call predecessors, (27), 24 states have call successors, (27) [2024-11-17 05:00:22,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 250 transitions. [2024-11-17 05:00:22,098 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 250 transitions. Word has length 39 [2024-11-17 05:00:22,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 05:00:22,099 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 250 transitions. [2024-11-17 05:00:22,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-17 05:00:22,099 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 250 transitions. [2024-11-17 05:00:22,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-17 05:00:22,100 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 05:00:22,100 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 05:00:22,118 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-17 05:00:22,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-17 05:00:22,301 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting func_to_recursive_line_40_to_51_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_40_to_51_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_40_to_51_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-17 05:00:22,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 05:00:22,301 INFO L85 PathProgramCache]: Analyzing trace with hash 639561622, now seen corresponding path program 1 times [2024-11-17 05:00:22,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 05:00:22,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933917636] [2024-11-17 05:00:22,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 05:00:22,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 05:00:22,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat