./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_sqrt1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_sqrt1.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 b23f88f1df76f11fbfc8e6288f4ade0e00ecdc2b8889a67f3774db6dfccf1d90 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 21:16:17,363 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 21:16:17,452 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-14 21:16:17,456 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 21:16:17,459 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 21:16:17,481 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 21:16:17,482 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 21:16:17,482 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 21:16:17,483 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 21:16:17,483 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 21:16:17,484 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 21:16:17,484 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 21:16:17,484 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 21:16:17,487 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 21:16:17,487 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 21:16:17,487 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 21:16:17,487 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 21:16:17,488 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 21:16:17,488 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 21:16:17,488 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 21:16:17,488 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 21:16:17,492 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 21:16:17,493 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 21:16:17,493 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 21:16:17,493 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 21:16:17,493 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-14 21:16:17,493 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 21:16:17,494 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 21:16:17,494 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 21:16:17,494 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 21:16:17,494 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 21:16:17,495 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 21:16:17,495 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 21:16:17,495 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 21:16:17,495 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 21:16:17,495 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 21:16:17,495 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 21:16:17,496 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 21:16:17,496 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 21:16:17,496 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 21:16:17,496 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 21:16:17,497 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 21:16:17,497 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 21:16:17,497 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 21:16:17,497 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b23f88f1df76f11fbfc8e6288f4ade0e00ecdc2b8889a67f3774db6dfccf1d90 [2024-10-14 21:16:17,743 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 21:16:17,775 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 21:16:17,778 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 21:16:17,779 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 21:16:17,780 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 21:16:17,781 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_sqrt1.c [2024-10-14 21:16:19,220 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 21:16:19,427 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 21:16:19,431 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_sqrt1.c [2024-10-14 21:16:19,441 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abaf9f9b6/9d40c9024f5745c6b0fd191cffcd116f/FLAG87666bad0 [2024-10-14 21:16:19,458 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abaf9f9b6/9d40c9024f5745c6b0fd191cffcd116f [2024-10-14 21:16:19,461 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 21:16:19,462 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 21:16:19,464 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 21:16:19,466 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 21:16:19,471 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 21:16:19,472 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:16:19" (1/1) ... [2024-10-14 21:16:19,474 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20e0ae4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:16:19, skipping insertion in model container [2024-10-14 21:16:19,474 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:16:19" (1/1) ... [2024-10-14 21:16:19,498 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 21:16:19,662 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 21:16:19,672 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 21:16:19,714 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 21:16:19,747 INFO L204 MainTranslator]: Completed translation [2024-10-14 21:16:19,748 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:16:19 WrapperNode [2024-10-14 21:16:19,748 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 21:16:19,753 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 21:16:19,754 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 21:16:19,754 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 21:16:19,761 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:16:19" (1/1) ... [2024-10-14 21:16:19,771 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:16:19" (1/1) ... [2024-10-14 21:16:19,799 INFO L138 Inliner]: procedures = 16, calls = 67, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 96 [2024-10-14 21:16:19,800 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 21:16:19,800 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 21:16:19,800 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 21:16:19,801 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 21:16:19,811 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:16:19" (1/1) ... [2024-10-14 21:16:19,811 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:16:19" (1/1) ... [2024-10-14 21:16:19,814 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:16:19" (1/1) ... [2024-10-14 21:16:19,831 INFO L175 MemorySlicer]: Split 41 memory accesses to 6 slices as follows [2, 8, 9, 12, 8, 2]. 29 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8, 0, 0, 0, 0]. The 7 writes are split as follows [0, 0, 2, 2, 2, 1]. [2024-10-14 21:16:19,831 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:16:19" (1/1) ... [2024-10-14 21:16:19,832 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:16:19" (1/1) ... [2024-10-14 21:16:19,838 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:16:19" (1/1) ... [2024-10-14 21:16:19,840 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:16:19" (1/1) ... [2024-10-14 21:16:19,842 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:16:19" (1/1) ... [2024-10-14 21:16:19,843 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:16:19" (1/1) ... [2024-10-14 21:16:19,845 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 21:16:19,846 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 21:16:19,846 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 21:16:19,847 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 21:16:19,847 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:16:19" (1/1) ... [2024-10-14 21:16:19,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 21:16:19,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:16:19,890 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) [2024-10-14 21:16:19,892 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 [2024-10-14 21:16:19,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 21:16:19,932 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_28_to_39_0 [2024-10-14 21:16:19,933 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_28_to_39_0 [2024-10-14 21:16:19,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 21:16:19,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 21:16:19,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-14 21:16:19,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-14 21:16:19,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-14 21:16:19,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-14 21:16:19,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-14 21:16:19,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-14 21:16:19,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-14 21:16:19,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-14 21:16:19,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-14 21:16:19,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-14 21:16:19,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-10-14 21:16:19,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 21:16:19,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 21:16:19,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-14 21:16:19,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-14 21:16:19,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-14 21:16:19,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-14 21:16:19,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-14 21:16:19,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-10-14 21:16:19,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-14 21:16:19,936 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-14 21:16:19,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-14 21:16:20,023 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 21:16:20,025 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 21:16:20,420 INFO L? ?]: Removed 99 outVars from TransFormulas that were not future-live. [2024-10-14 21:16:20,420 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 21:16:20,456 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 21:16:20,456 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-14 21:16:20,456 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:16:20 BoogieIcfgContainer [2024-10-14 21:16:20,456 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 21:16:20,458 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 21:16:20,458 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 21:16:20,462 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 21:16:20,463 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:16:19" (1/3) ... [2024-10-14 21:16:20,463 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cc05f2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:16:20, skipping insertion in model container [2024-10-14 21:16:20,464 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:16:19" (2/3) ... [2024-10-14 21:16:20,464 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cc05f2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:16:20, skipping insertion in model container [2024-10-14 21:16:20,464 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:16:20" (3/3) ... [2024-10-14 21:16:20,466 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_sqrt1.c [2024-10-14 21:16:20,478 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 21:16:20,479 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 50 error locations. [2024-10-14 21:16:20,559 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 21:16:20,568 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;@25cad934, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 21:16:20,569 INFO L334 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2024-10-14 21:16:20,573 INFO L276 IsEmpty]: Start isEmpty. Operand has 126 states, 65 states have (on average 1.8153846153846154) internal successors, (118), 116 states have internal predecessors, (118), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-10-14 21:16:20,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-10-14 21:16:20,577 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:16:20,578 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-10-14 21:16:20,579 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-14 21:16:20,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:16:20,584 INFO L85 PathProgramCache]: Analyzing trace with hash 182797673, now seen corresponding path program 1 times [2024-10-14 21:16:20,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:16:20,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806492714] [2024-10-14 21:16:20,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:16:20,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:16:20,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:21,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:16:21,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:16:21,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806492714] [2024-10-14 21:16:21,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806492714] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:16:21,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:16:21,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 21:16:21,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921987292] [2024-10-14 21:16:21,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:16:21,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 21:16:21,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:16:21,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 21:16:21,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-14 21:16:21,195 INFO L87 Difference]: Start difference. First operand has 126 states, 65 states have (on average 1.8153846153846154) internal successors, (118), 116 states have internal predecessors, (118), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 6 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 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) [2024-10-14 21:16:21,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:16:21,453 INFO L93 Difference]: Finished difference Result 320 states and 357 transitions. [2024-10-14 21:16:21,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 21:16:21,458 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 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 5 [2024-10-14 21:16:21,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:16:21,467 INFO L225 Difference]: With dead ends: 320 [2024-10-14 21:16:21,467 INFO L226 Difference]: Without dead ends: 193 [2024-10-14 21:16:21,472 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-14 21:16:21,475 INFO L432 NwaCegarLoop]: 116 mSDtfsCounter, 118 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 21:16:21,476 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 563 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 21:16:21,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2024-10-14 21:16:21,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 156. [2024-10-14 21:16:21,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 93 states have (on average 1.7419354838709677) internal successors, (162), 143 states have internal predecessors, (162), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-10-14 21:16:21,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 183 transitions. [2024-10-14 21:16:21,524 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 183 transitions. Word has length 5 [2024-10-14 21:16:21,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:16:21,525 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 183 transitions. [2024-10-14 21:16:21,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 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) [2024-10-14 21:16:21,525 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 183 transitions. [2024-10-14 21:16:21,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-14 21:16:21,527 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:16:21,527 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:16:21,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 21:16:21,527 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_28_to_39_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-14 21:16:21,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:16:21,528 INFO L85 PathProgramCache]: Analyzing trace with hash -133385090, now seen corresponding path program 1 times [2024-10-14 21:16:21,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:16:21,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173654359] [2024-10-14 21:16:21,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:16:21,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:16:21,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:21,732 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 21:16:21,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:21,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:16:21,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:16:21,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173654359] [2024-10-14 21:16:21,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173654359] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:16:21,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:16:21,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 21:16:21,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440220086] [2024-10-14 21:16:21,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:16:21,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 21:16:21,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:16:21,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 21:16:21,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-14 21:16:21,747 INFO L87 Difference]: Start difference. First operand 156 states and 183 transitions. Second operand has 6 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-14 21:16:21,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:16:21,925 INFO L93 Difference]: Finished difference Result 193 states and 203 transitions. [2024-10-14 21:16:21,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 21:16:21,925 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2024-10-14 21:16:21,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:16:21,927 INFO L225 Difference]: With dead ends: 193 [2024-10-14 21:16:21,927 INFO L226 Difference]: Without dead ends: 191 [2024-10-14 21:16:21,928 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-14 21:16:21,929 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 113 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 21:16:21,932 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 546 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 21:16:21,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-10-14 21:16:21,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 156. [2024-10-14 21:16:21,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 93 states have (on average 1.7204301075268817) internal successors, (160), 143 states have internal predecessors, (160), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-10-14 21:16:21,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 181 transitions. [2024-10-14 21:16:21,955 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 181 transitions. Word has length 15 [2024-10-14 21:16:21,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:16:21,955 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 181 transitions. [2024-10-14 21:16:21,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-14 21:16:21,956 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 181 transitions. [2024-10-14 21:16:21,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-14 21:16:21,956 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:16:21,956 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:16:21,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 21:16:21,957 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_28_to_39_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-14 21:16:21,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:16:21,958 INFO L85 PathProgramCache]: Analyzing trace with hash 665948896, now seen corresponding path program 1 times [2024-10-14 21:16:21,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:16:21,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152595029] [2024-10-14 21:16:21,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:16:21,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:16:21,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:22,158 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 21:16:22,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:22,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:16:22,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:16:22,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152595029] [2024-10-14 21:16:22,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152595029] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:16:22,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:16:22,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 21:16:22,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931943512] [2024-10-14 21:16:22,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:16:22,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 21:16:22,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:16:22,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 21:16:22,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-14 21:16:22,170 INFO L87 Difference]: Start difference. First operand 156 states and 181 transitions. Second operand has 6 states, 4 states have (on average 3.5) internal successors, (14), 5 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) [2024-10-14 21:16:22,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:16:22,319 INFO L93 Difference]: Finished difference Result 191 states and 201 transitions. [2024-10-14 21:16:22,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 21:16:22,319 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.5) internal successors, (14), 5 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 [2024-10-14 21:16:22,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:16:22,322 INFO L225 Difference]: With dead ends: 191 [2024-10-14 21:16:22,322 INFO L226 Difference]: Without dead ends: 189 [2024-10-14 21:16:22,323 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-14 21:16:22,324 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 103 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 21:16:22,324 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 543 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 21:16:22,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-10-14 21:16:22,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 156. [2024-10-14 21:16:22,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 93 states have (on average 1.6989247311827957) internal successors, (158), 143 states have internal predecessors, (158), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-10-14 21:16:22,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 179 transitions. [2024-10-14 21:16:22,348 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 179 transitions. Word has length 17 [2024-10-14 21:16:22,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:16:22,349 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 179 transitions. [2024-10-14 21:16:22,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.5) internal successors, (14), 5 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) [2024-10-14 21:16:22,349 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 179 transitions. [2024-10-14 21:16:22,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-14 21:16:22,350 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:16:22,350 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:16:22,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 21:16:22,350 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_28_to_39_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-14 21:16:22,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:16:22,352 INFO L85 PathProgramCache]: Analyzing trace with hash 26763586, now seen corresponding path program 1 times [2024-10-14 21:16:22,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:16:22,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568527773] [2024-10-14 21:16:22,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:16:22,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:16:22,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 21:16:22,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1709939019] [2024-10-14 21:16:22,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:16:22,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:16:22,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:16:22,391 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) [2024-10-14 21:16:22,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 21:16:22,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:22,497 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-14 21:16:22,507 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:16:22,553 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 [2024-10-14 21:16:22,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:16:22,743 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 21:16:22,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:16:22,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568527773] [2024-10-14 21:16:22,745 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 21:16:22,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709939019] [2024-10-14 21:16:22,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709939019] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:16:22,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:16:22,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-14 21:16:22,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484002972] [2024-10-14 21:16:22,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:16:22,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-14 21:16:22,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:16:22,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-14 21:16:22,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-10-14 21:16:22,751 INFO L87 Difference]: Start difference. First operand 156 states and 179 transitions. Second operand has 11 states, 9 states have (on average 1.7777777777777777) 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) [2024-10-14 21:16:23,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:16:23,125 INFO L93 Difference]: Finished difference Result 215 states and 226 transitions. [2024-10-14 21:16:23,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-14 21:16:23,126 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.7777777777777777) 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 [2024-10-14 21:16:23,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:16:23,127 INFO L225 Difference]: With dead ends: 215 [2024-10-14 21:16:23,128 INFO L226 Difference]: Without dead ends: 213 [2024-10-14 21:16:23,128 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2024-10-14 21:16:23,131 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 170 mSDsluCounter, 863 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 21:16:23,132 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 962 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 21:16:23,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2024-10-14 21:16:23,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 156. [2024-10-14 21:16:23,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 93 states have (on average 1.6774193548387097) internal successors, (156), 143 states have internal predecessors, (156), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-10-14 21:16:23,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 177 transitions. [2024-10-14 21:16:23,142 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 177 transitions. Word has length 19 [2024-10-14 21:16:23,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:16:23,142 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 177 transitions. [2024-10-14 21:16:23,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.7777777777777777) 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) [2024-10-14 21:16:23,142 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 177 transitions. [2024-10-14 21:16:23,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-14 21:16:23,143 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:16:23,143 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] [2024-10-14 21:16:23,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-14 21:16:23,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:16:23,345 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_28_to_39_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-14 21:16:23,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:16:23,346 INFO L85 PathProgramCache]: Analyzing trace with hash 365629163, now seen corresponding path program 1 times [2024-10-14 21:16:23,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:16:23,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418758844] [2024-10-14 21:16:23,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:16:23,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:16:23,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 21:16:23,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [351408684] [2024-10-14 21:16:23,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:16:23,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:16:23,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:16:23,372 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) [2024-10-14 21:16:23,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 21:16:23,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:23,480 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-14 21:16:23,483 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:16:23,490 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 [2024-10-14 21:16:23,659 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 21:16:23,659 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 21:16:23,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:16:23,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418758844] [2024-10-14 21:16:23,660 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 21:16:23,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351408684] [2024-10-14 21:16:23,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351408684] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:16:23,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:16:23,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 21:16:23,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351643142] [2024-10-14 21:16:23,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:16:23,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 21:16:23,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:16:23,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 21:16:23,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-14 21:16:23,667 INFO L87 Difference]: Start difference. First operand 156 states and 177 transitions. Second operand has 7 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-14 21:16:23,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:16:23,841 INFO L93 Difference]: Finished difference Result 229 states and 238 transitions. [2024-10-14 21:16:23,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 21:16:23,841 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2024-10-14 21:16:23,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:16:23,847 INFO L225 Difference]: With dead ends: 229 [2024-10-14 21:16:23,847 INFO L226 Difference]: Without dead ends: 228 [2024-10-14 21:16:23,847 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-10-14 21:16:23,848 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 181 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 21:16:23,849 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 511 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 21:16:23,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-10-14 21:16:23,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 174. [2024-10-14 21:16:23,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 108 states have (on average 1.6666666666666667) internal successors, (180), 158 states have internal predecessors, (180), 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) [2024-10-14 21:16:23,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 205 transitions. [2024-10-14 21:16:23,871 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 205 transitions. Word has length 27 [2024-10-14 21:16:23,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:16:23,871 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 205 transitions. [2024-10-14 21:16:23,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-14 21:16:23,872 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 205 transitions. [2024-10-14 21:16:23,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-14 21:16:23,872 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:16:23,872 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] [2024-10-14 21:16:23,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-14 21:16:24,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:16:24,074 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_28_to_39_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-14 21:16:24,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:16:24,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1550397774, now seen corresponding path program 1 times [2024-10-14 21:16:24,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:16:24,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824104725] [2024-10-14 21:16:24,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:16:24,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:16:24,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 21:16:24,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2010546469] [2024-10-14 21:16:24,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:16:24,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:16:24,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:16:24,096 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) [2024-10-14 21:16:24,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 21:16:24,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:24,179 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-14 21:16:24,182 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:16:24,187 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 [2024-10-14 21:16:24,321 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 21:16:24,322 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 21:16:24,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:16:24,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824104725] [2024-10-14 21:16:24,322 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 21:16:24,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010546469] [2024-10-14 21:16:24,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010546469] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:16:24,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:16:24,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 21:16:24,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68557951] [2024-10-14 21:16:24,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:16:24,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 21:16:24,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:16:24,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 21:16:24,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-14 21:16:24,325 INFO L87 Difference]: Start difference. First operand 174 states and 205 transitions. Second operand has 7 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-14 21:16:24,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:16:24,499 INFO L93 Difference]: Finished difference Result 228 states and 237 transitions. [2024-10-14 21:16:24,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 21:16:24,500 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2024-10-14 21:16:24,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:16:24,501 INFO L225 Difference]: With dead ends: 228 [2024-10-14 21:16:24,501 INFO L226 Difference]: Without dead ends: 227 [2024-10-14 21:16:24,501 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-10-14 21:16:24,502 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 177 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 21:16:24,502 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 501 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 21:16:24,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-10-14 21:16:24,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 174. [2024-10-14 21:16:24,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 108 states have (on average 1.6574074074074074) internal successors, (179), 158 states have internal predecessors, (179), 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) [2024-10-14 21:16:24,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 204 transitions. [2024-10-14 21:16:24,511 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 204 transitions. Word has length 28 [2024-10-14 21:16:24,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:16:24,511 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 204 transitions. [2024-10-14 21:16:24,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-14 21:16:24,512 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 204 transitions. [2024-10-14 21:16:24,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-14 21:16:24,513 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:16:24,513 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] [2024-10-14 21:16:24,531 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-14 21:16:24,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:16:24,717 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_28_to_39_0Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-14 21:16:24,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:16:24,718 INFO L85 PathProgramCache]: Analyzing trace with hash -817690675, now seen corresponding path program 1 times [2024-10-14 21:16:24,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:16:24,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722386694] [2024-10-14 21:16:24,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:16:24,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:16:24,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:24,851 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 21:16:24,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:24,855 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 21:16:24,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:24,859 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 21:16:24,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:16:24,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722386694] [2024-10-14 21:16:24,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722386694] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:16:24,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:16:24,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 21:16:24,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607571104] [2024-10-14 21:16:24,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:16:24,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 21:16:24,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:16:24,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 21:16:24,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-14 21:16:24,861 INFO L87 Difference]: Start difference. First operand 174 states and 204 transitions. Second operand has 6 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-14 21:16:25,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:16:25,028 INFO L93 Difference]: Finished difference Result 211 states and 221 transitions. [2024-10-14 21:16:25,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 21:16:25,029 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 29 [2024-10-14 21:16:25,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:16:25,030 INFO L225 Difference]: With dead ends: 211 [2024-10-14 21:16:25,030 INFO L226 Difference]: Without dead ends: 209 [2024-10-14 21:16:25,030 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 [2024-10-14 21:16:25,031 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 121 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 21:16:25,031 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 520 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 21:16:25,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2024-10-14 21:16:25,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 174. [2024-10-14 21:16:25,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 108 states have (on average 1.6388888888888888) internal successors, (177), 158 states have internal predecessors, (177), 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) [2024-10-14 21:16:25,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 202 transitions. [2024-10-14 21:16:25,042 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 202 transitions. Word has length 29 [2024-10-14 21:16:25,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:16:25,042 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 202 transitions. [2024-10-14 21:16:25,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-14 21:16:25,042 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 202 transitions. [2024-10-14 21:16:25,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-10-14 21:16:25,043 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:16:25,043 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] [2024-10-14 21:16:25,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 21:16:25,043 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_28_to_39_0Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-14 21:16:25,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:16:25,044 INFO L85 PathProgramCache]: Analyzing trace with hash 178278575, now seen corresponding path program 1 times [2024-10-14 21:16:25,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:16:25,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785767491] [2024-10-14 21:16:25,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:16:25,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:16:25,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 21:16:25,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1103077819] [2024-10-14 21:16:25,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:16:25,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:16:25,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:16:25,072 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) [2024-10-14 21:16:25,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 21:16:25,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:25,161 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-10-14 21:16:25,163 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:16:25,170 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 [2024-10-14 21:16:25,176 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 [2024-10-14 21:16:25,442 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 21:16:25,443 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 21:16:25,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:16:25,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785767491] [2024-10-14 21:16:25,444 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 21:16:25,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103077819] [2024-10-14 21:16:25,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103077819] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:16:25,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:16:25,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 21:16:25,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830893060] [2024-10-14 21:16:25,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:16:25,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 21:16:25,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:16:25,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 21:16:25,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-14 21:16:25,446 INFO L87 Difference]: Start difference. First operand 174 states and 202 transitions. Second operand has 8 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-14 21:16:25,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:16:25,717 INFO L93 Difference]: Finished difference Result 225 states and 234 transitions. [2024-10-14 21:16:25,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 21:16:25,718 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 31 [2024-10-14 21:16:25,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:16:25,719 INFO L225 Difference]: With dead ends: 225 [2024-10-14 21:16:25,719 INFO L226 Difference]: Without dead ends: 223 [2024-10-14 21:16:25,719 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-10-14 21:16:25,720 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 201 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 21:16:25,720 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 516 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 21:16:25,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2024-10-14 21:16:25,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 174. [2024-10-14 21:16:25,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 108 states have (on average 1.6203703703703705) internal successors, (175), 158 states have internal predecessors, (175), 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) [2024-10-14 21:16:25,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 200 transitions. [2024-10-14 21:16:25,735 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 200 transitions. Word has length 31 [2024-10-14 21:16:25,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:16:25,735 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 200 transitions. [2024-10-14 21:16:25,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-14 21:16:25,736 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 200 transitions. [2024-10-14 21:16:25,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-10-14 21:16:25,737 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:16:25,737 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] [2024-10-14 21:16:25,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-14 21:16:25,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:16:25,942 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_28_to_39_0Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-14 21:16:25,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:16:25,942 INFO L85 PathProgramCache]: Analyzing trace with hash -472979055, now seen corresponding path program 1 times [2024-10-14 21:16:25,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:16:25,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790290180] [2024-10-14 21:16:25,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:16:25,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:16:25,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:26,127 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 21:16:26,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:26,134 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 21:16:26,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:26,138 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 21:16:26,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:16:26,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790290180] [2024-10-14 21:16:26,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790290180] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:16:26,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:16:26,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 21:16:26,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811498737] [2024-10-14 21:16:26,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:16:26,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 21:16:26,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:16:26,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 21:16:26,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-14 21:16:26,140 INFO L87 Difference]: Start difference. First operand 174 states and 200 transitions. Second operand has 6 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-14 21:16:26,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:16:26,281 INFO L93 Difference]: Finished difference Result 211 states and 221 transitions. [2024-10-14 21:16:26,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 21:16:26,282 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 33 [2024-10-14 21:16:26,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:16:26,284 INFO L225 Difference]: With dead ends: 211 [2024-10-14 21:16:26,284 INFO L226 Difference]: Without dead ends: 209 [2024-10-14 21:16:26,284 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 [2024-10-14 21:16:26,284 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 103 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 21:16:26,285 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 526 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 21:16:26,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2024-10-14 21:16:26,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 174. [2024-10-14 21:16:26,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 108 states have (on average 1.6018518518518519) internal successors, (173), 158 states have internal predecessors, (173), 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) [2024-10-14 21:16:26,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 198 transitions. [2024-10-14 21:16:26,293 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 198 transitions. Word has length 33 [2024-10-14 21:16:26,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:16:26,293 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 198 transitions. [2024-10-14 21:16:26,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-14 21:16:26,293 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 198 transitions. [2024-10-14 21:16:26,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-10-14 21:16:26,296 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:16:26,296 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] [2024-10-14 21:16:26,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-14 21:16:26,296 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_28_to_39_0Err18ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-14 21:16:26,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:16:26,297 INFO L85 PathProgramCache]: Analyzing trace with hash 733663859, now seen corresponding path program 1 times [2024-10-14 21:16:26,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:16:26,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002355989] [2024-10-14 21:16:26,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:16:26,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:16:26,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:26,473 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 21:16:26,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:26,481 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 21:16:26,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:26,489 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 21:16:26,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:16:26,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002355989] [2024-10-14 21:16:26,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002355989] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:16:26,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:16:26,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 21:16:26,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449610727] [2024-10-14 21:16:26,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:16:26,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 21:16:26,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:16:26,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 21:16:26,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-14 21:16:26,493 INFO L87 Difference]: Start difference. First operand 174 states and 198 transitions. Second operand has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-14 21:16:26,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:16:26,785 INFO L93 Difference]: Finished difference Result 209 states and 219 transitions. [2024-10-14 21:16:26,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 21:16:26,786 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 35 [2024-10-14 21:16:26,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:16:26,788 INFO L225 Difference]: With dead ends: 209 [2024-10-14 21:16:26,789 INFO L226 Difference]: Without dead ends: 207 [2024-10-14 21:16:26,789 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-14 21:16:26,789 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 104 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 21:16:26,790 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 539 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 21:16:26,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-10-14 21:16:26,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 174. [2024-10-14 21:16:26,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 108 states have (on average 1.5833333333333333) internal successors, (171), 158 states have internal predecessors, (171), 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) [2024-10-14 21:16:26,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 196 transitions. [2024-10-14 21:16:26,797 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 196 transitions. Word has length 35 [2024-10-14 21:16:26,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:16:26,797 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 196 transitions. [2024-10-14 21:16:26,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-14 21:16:26,797 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 196 transitions. [2024-10-14 21:16:26,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-10-14 21:16:26,800 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:16:26,800 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, 1] [2024-10-14 21:16:26,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-14 21:16:26,800 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_28_to_39_0Err19ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-14 21:16:26,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:16:26,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1268743226, now seen corresponding path program 1 times [2024-10-14 21:16:26,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:16:26,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264103110] [2024-10-14 21:16:26,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:16:26,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:16:26,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:27,127 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 21:16:27,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:27,131 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 21:16:27,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:27,134 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 21:16:27,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:16:27,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264103110] [2024-10-14 21:16:27,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264103110] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:16:27,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:16:27,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 21:16:27,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62799222] [2024-10-14 21:16:27,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:16:27,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 21:16:27,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:16:27,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 21:16:27,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 21:16:27,136 INFO L87 Difference]: Start difference. First operand 174 states and 196 transitions. Second operand has 7 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-14 21:16:27,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:16:27,733 INFO L93 Difference]: Finished difference Result 199 states and 209 transitions. [2024-10-14 21:16:27,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 21:16:27,735 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 36 [2024-10-14 21:16:27,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:16:27,736 INFO L225 Difference]: With dead ends: 199 [2024-10-14 21:16:27,736 INFO L226 Difference]: Without dead ends: 197 [2024-10-14 21:16:27,737 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-14 21:16:27,737 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 95 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-14 21:16:27,737 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 577 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-14 21:16:27,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-10-14 21:16:27,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 174. [2024-10-14 21:16:27,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 108 states have (on average 1.5648148148148149) internal successors, (169), 158 states have internal predecessors, (169), 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) [2024-10-14 21:16:27,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 194 transitions. [2024-10-14 21:16:27,760 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 194 transitions. Word has length 36 [2024-10-14 21:16:27,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:16:27,760 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 194 transitions. [2024-10-14 21:16:27,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-14 21:16:27,760 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 194 transitions. [2024-10-14 21:16:27,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-10-14 21:16:27,761 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:16:27,761 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, 1, 1, 1, 1] [2024-10-14 21:16:27,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-14 21:16:27,761 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_28_to_39_0Err22ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-14 21:16:27,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:16:27,762 INFO L85 PathProgramCache]: Analyzing trace with hash -536299601, now seen corresponding path program 1 times [2024-10-14 21:16:27,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:16:27,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120088434] [2024-10-14 21:16:27,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:16:27,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:16:27,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:27,916 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 21:16:27,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:27,919 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 21:16:27,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:27,922 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 21:16:27,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:27,925 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-14 21:16:27,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:16:27,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120088434] [2024-10-14 21:16:27,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120088434] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:16:27,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:16:27,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 21:16:27,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108432851] [2024-10-14 21:16:27,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:16:27,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 21:16:27,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:16:27,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 21:16:27,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-14 21:16:27,928 INFO L87 Difference]: Start difference. First operand 174 states and 194 transitions. Second operand has 6 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-10-14 21:16:28,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:16:28,020 INFO L93 Difference]: Finished difference Result 184 states and 198 transitions. [2024-10-14 21:16:28,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 21:16:28,021 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 46 [2024-10-14 21:16:28,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:16:28,023 INFO L225 Difference]: With dead ends: 184 [2024-10-14 21:16:28,023 INFO L226 Difference]: Without dead ends: 182 [2024-10-14 21:16:28,023 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-14 21:16:28,024 INFO L432 NwaCegarLoop]: 116 mSDtfsCounter, 49 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 21:16:28,024 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 559 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 21:16:28,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-10-14 21:16:28,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 176. [2024-10-14 21:16:28,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 110 states have (on average 1.5545454545454545) internal successors, (171), 160 states have internal predecessors, (171), 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) [2024-10-14 21:16:28,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 196 transitions. [2024-10-14 21:16:28,031 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 196 transitions. Word has length 46 [2024-10-14 21:16:28,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:16:28,032 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 196 transitions. [2024-10-14 21:16:28,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-10-14 21:16:28,032 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 196 transitions. [2024-10-14 21:16:28,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-10-14 21:16:28,033 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:16:28,033 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, 1, 1, 1, 1, 1, 1] [2024-10-14 21:16:28,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-14 21:16:28,033 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting func_to_recursive_line_28_to_39_0Err24ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-14 21:16:28,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:16:28,034 INFO L85 PathProgramCache]: Analyzing trace with hash 12161873, now seen corresponding path program 1 times [2024-10-14 21:16:28,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:16:28,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027952452] [2024-10-14 21:16:28,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:16:28,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:16:28,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:28,175 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 21:16:28,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:28,179 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 21:16:28,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:28,182 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 21:16:28,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:28,186 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-14 21:16:28,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:16:28,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027952452] [2024-10-14 21:16:28,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027952452] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:16:28,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:16:28,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 21:16:28,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003409703] [2024-10-14 21:16:28,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:16:28,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 21:16:28,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:16:28,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 21:16:28,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-14 21:16:28,189 INFO L87 Difference]: Start difference. First operand 176 states and 196 transitions. Second operand has 6 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-10-14 21:16:28,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:16:28,296 INFO L93 Difference]: Finished difference Result 203 states and 213 transitions. [2024-10-14 21:16:28,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 21:16:28,297 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 48 [2024-10-14 21:16:28,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:16:28,298 INFO L225 Difference]: With dead ends: 203 [2024-10-14 21:16:28,298 INFO L226 Difference]: Without dead ends: 201 [2024-10-14 21:16:28,298 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-14 21:16:28,299 INFO L432 NwaCegarLoop]: 116 mSDtfsCounter, 72 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 21:16:28,299 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 554 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 21:16:28,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-10-14 21:16:28,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 178. [2024-10-14 21:16:28,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 112 states have (on average 1.5446428571428572) internal successors, (173), 162 states have internal predecessors, (173), 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) [2024-10-14 21:16:28,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 198 transitions. [2024-10-14 21:16:28,307 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 198 transitions. Word has length 48 [2024-10-14 21:16:28,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:16:28,308 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 198 transitions. [2024-10-14 21:16:28,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-10-14 21:16:28,308 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 198 transitions. [2024-10-14 21:16:28,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-10-14 21:16:28,309 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:16:28,309 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, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:16:28,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-14 21:16:28,310 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-14 21:16:28,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:16:28,310 INFO L85 PathProgramCache]: Analyzing trace with hash 376631387, now seen corresponding path program 1 times [2024-10-14 21:16:28,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:16:28,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424979504] [2024-10-14 21:16:28,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:16:28,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:16:28,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:28,421 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 21:16:28,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:28,466 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-14 21:16:28,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:28,470 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-14 21:16:28,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:28,473 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-14 21:16:28,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:28,477 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-14 21:16:28,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:16:28,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424979504] [2024-10-14 21:16:28,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424979504] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:16:28,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:16:28,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 21:16:28,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320439861] [2024-10-14 21:16:28,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:16:28,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 21:16:28,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:16:28,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 21:16:28,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-14 21:16:28,479 INFO L87 Difference]: Start difference. First operand 178 states and 198 transitions. Second operand has 6 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-14 21:16:28,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:16:28,608 INFO L93 Difference]: Finished difference Result 186 states and 200 transitions. [2024-10-14 21:16:28,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 21:16:28,609 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 49 [2024-10-14 21:16:28,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:16:28,610 INFO L225 Difference]: With dead ends: 186 [2024-10-14 21:16:28,610 INFO L226 Difference]: Without dead ends: 182 [2024-10-14 21:16:28,610 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-14 21:16:28,611 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 71 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 21:16:28,611 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 392 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 21:16:28,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-10-14 21:16:28,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 180. [2024-10-14 21:16:28,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 113 states have (on average 1.5044247787610618) internal successors, (170), 163 states have internal predecessors, (170), 12 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2024-10-14 21:16:28,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 196 transitions. [2024-10-14 21:16:28,621 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 196 transitions. Word has length 49 [2024-10-14 21:16:28,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:16:28,621 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 196 transitions. [2024-10-14 21:16:28,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-14 21:16:28,621 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 196 transitions. [2024-10-14 21:16:28,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-14 21:16:28,622 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:16:28,622 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:16:28,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-14 21:16:28,622 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting func_to_recursive_line_28_to_39_0Err26ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-14 21:16:28,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:16:28,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1197338893, now seen corresponding path program 1 times [2024-10-14 21:16:28,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:16:28,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594176330] [2024-10-14 21:16:28,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:16:28,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:16:28,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:28,958 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 21:16:28,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:28,962 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 21:16:28,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:28,966 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 21:16:28,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:28,970 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-14 21:16:28,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:16:28,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594176330] [2024-10-14 21:16:28,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594176330] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:16:28,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:16:28,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 21:16:28,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731800932] [2024-10-14 21:16:28,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:16:28,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 21:16:28,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:16:28,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 21:16:28,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 21:16:28,972 INFO L87 Difference]: Start difference. First operand 180 states and 196 transitions. Second operand has 7 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-10-14 21:16:29,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:16:29,141 INFO L93 Difference]: Finished difference Result 194 states and 205 transitions. [2024-10-14 21:16:29,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 21:16:29,141 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 50 [2024-10-14 21:16:29,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:16:29,143 INFO L225 Difference]: With dead ends: 194 [2024-10-14 21:16:29,143 INFO L226 Difference]: Without dead ends: 193 [2024-10-14 21:16:29,143 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-10-14 21:16:29,144 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 60 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 21:16:29,144 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 613 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 21:16:29,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2024-10-14 21:16:29,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 181. [2024-10-14 21:16:29,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 114 states have (on average 1.5) internal successors, (171), 164 states have internal predecessors, (171), 12 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2024-10-14 21:16:29,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 197 transitions. [2024-10-14 21:16:29,151 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 197 transitions. Word has length 50 [2024-10-14 21:16:29,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:16:29,151 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 197 transitions. [2024-10-14 21:16:29,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-10-14 21:16:29,151 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 197 transitions. [2024-10-14 21:16:29,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-10-14 21:16:29,152 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:16:29,152 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:16:29,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-14 21:16:29,153 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting func_to_recursive_line_28_to_39_0Err27ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-14 21:16:29,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:16:29,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1537200080, now seen corresponding path program 1 times [2024-10-14 21:16:29,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:16:29,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30286164] [2024-10-14 21:16:29,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:16:29,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:16:29,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:29,474 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 21:16:29,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:29,479 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 21:16:29,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:29,483 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 21:16:29,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:29,489 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-14 21:16:29,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:16:29,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30286164] [2024-10-14 21:16:29,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30286164] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:16:29,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:16:29,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 21:16:29,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361836425] [2024-10-14 21:16:29,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:16:29,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 21:16:29,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:16:29,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 21:16:29,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 21:16:29,491 INFO L87 Difference]: Start difference. First operand 181 states and 197 transitions. Second operand has 7 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-10-14 21:16:29,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:16:29,668 INFO L93 Difference]: Finished difference Result 194 states and 204 transitions. [2024-10-14 21:16:29,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 21:16:29,669 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 51 [2024-10-14 21:16:29,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:16:29,670 INFO L225 Difference]: With dead ends: 194 [2024-10-14 21:16:29,670 INFO L226 Difference]: Without dead ends: 193 [2024-10-14 21:16:29,670 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-10-14 21:16:29,671 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 59 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 21:16:29,671 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 618 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 21:16:29,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2024-10-14 21:16:29,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 182. [2024-10-14 21:16:29,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 115 states have (on average 1.4956521739130435) internal successors, (172), 165 states have internal predecessors, (172), 12 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2024-10-14 21:16:29,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 198 transitions. [2024-10-14 21:16:29,678 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 198 transitions. Word has length 51 [2024-10-14 21:16:29,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:16:29,678 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 198 transitions. [2024-10-14 21:16:29,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-10-14 21:16:29,679 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 198 transitions. [2024-10-14 21:16:29,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-14 21:16:29,679 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:16:29,679 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:16:29,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-14 21:16:29,679 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-14 21:16:29,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:16:29,680 INFO L85 PathProgramCache]: Analyzing trace with hash -454679621, now seen corresponding path program 1 times [2024-10-14 21:16:29,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:16:29,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528286257] [2024-10-14 21:16:29,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:16:29,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:16:29,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:29,958 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 21:16:29,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:29,962 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 21:16:29,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:29,966 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 21:16:29,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:29,973 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-14 21:16:29,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:16:29,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528286257] [2024-10-14 21:16:29,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528286257] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 21:16:29,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551249627] [2024-10-14 21:16:29,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:16:29,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:16:29,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:16:29,976 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) [2024-10-14 21:16:29,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 21:16:30,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:30,084 INFO L255 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-14 21:16:30,086 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:16:30,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 15 [2024-10-14 21:16:30,397 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 [2024-10-14 21:16:30,411 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-14 21:16:30,411 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 21:16:30,627 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-14 21:16:30,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551249627] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 21:16:30,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 21:16:30,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 20 [2024-10-14 21:16:30,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116543205] [2024-10-14 21:16:30,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 21:16:30,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-14 21:16:30,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:16:30,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-14 21:16:30,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2024-10-14 21:16:30,630 INFO L87 Difference]: Start difference. First operand 182 states and 198 transitions. Second operand has 21 states, 19 states have (on average 6.2105263157894735) internal successors, (118), 17 states have internal predecessors, (118), 7 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-10-14 21:16:31,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:16:31,027 INFO L93 Difference]: Finished difference Result 187 states and 205 transitions. [2024-10-14 21:16:31,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-14 21:16:31,028 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 6.2105263157894735) internal successors, (118), 17 states have internal predecessors, (118), 7 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 55 [2024-10-14 21:16:31,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:16:31,029 INFO L225 Difference]: With dead ends: 187 [2024-10-14 21:16:31,029 INFO L226 Difference]: Without dead ends: 184 [2024-10-14 21:16:31,030 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 98 SyntacticMatches, 7 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2024-10-14 21:16:31,031 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 365 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 1008 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 21:16:31,031 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 1008 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 21:16:31,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-10-14 21:16:31,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 179. [2024-10-14 21:16:31,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 115 states have (on average 1.4695652173913043) internal successors, (169), 162 states have internal predecessors, (169), 12 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2024-10-14 21:16:31,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 195 transitions. [2024-10-14 21:16:31,044 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 195 transitions. Word has length 55 [2024-10-14 21:16:31,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:16:31,045 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 195 transitions. [2024-10-14 21:16:31,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 6.2105263157894735) internal successors, (118), 17 states have internal predecessors, (118), 7 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-10-14 21:16:31,045 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 195 transitions. [2024-10-14 21:16:31,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-14 21:16:31,046 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:16:31,046 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:16:31,065 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-14 21:16:31,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-14 21:16:31,246 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-10-14 21:16:31,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:16:31,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1210166326, now seen corresponding path program 1 times [2024-10-14 21:16:31,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:16:31,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151833297] [2024-10-14 21:16:31,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:16:31,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:16:31,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:31,516 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 21:16:31,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:31,519 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 21:16:31,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:31,522 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 21:16:31,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:31,525 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-14 21:16:31,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:16:31,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151833297] [2024-10-14 21:16:31,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151833297] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 21:16:31,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539826268] [2024-10-14 21:16:31,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:16:31,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:16:31,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:16:31,528 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) [2024-10-14 21:16:31,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-14 21:16:31,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:31,646 INFO L255 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-14 21:16:31,649 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:16:36,142 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 [2024-10-14 21:16:41,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 17 [2024-10-14 21:16:48,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-14 21:16:53,861 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 21:16:53,861 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 21:17:05,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539826268] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 21:17:05,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 21:17:05,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 14] total 21 [2024-10-14 21:17:05,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936984456] [2024-10-14 21:17:05,589 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 21:17:05,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-14 21:17:05,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:17:05,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-14 21:17:05,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=916, Unknown=6, NotChecked=0, Total=1056 [2024-10-14 21:17:05,592 INFO L87 Difference]: Start difference. First operand 179 states and 195 transitions. Second operand has 22 states, 20 states have (on average 4.35) internal successors, (87), 19 states have internal predecessors, (87), 8 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2024-10-14 21:17:13,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-10-14 21:17:21,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-14 21:17:25,599 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-14 21:17:29,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-14 21:17:33,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-14 21:17:37,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-14 21:17:42,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-14 21:17:50,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-14 21:17:51,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0]