./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 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/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-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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-dev-84cfde4 [2024-10-11 21:19:17,417 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 21:19:17,472 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-11 21:19:17,475 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 21:19:17,477 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 21:19:17,501 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 21:19:17,502 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 21:19:17,502 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 21:19:17,503 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 21:19:17,505 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 21:19:17,506 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 21:19:17,506 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 21:19:17,506 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 21:19:17,506 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 21:19:17,507 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 21:19:17,508 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 21:19:17,508 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 21:19:17,508 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 21:19:17,508 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 21:19:17,508 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 21:19:17,509 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 21:19:17,509 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 21:19:17,509 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 21:19:17,510 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 21:19:17,510 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 21:19:17,510 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-11 21:19:17,510 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 21:19:17,510 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 21:19:17,510 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 21:19:17,511 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 21:19:17,511 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 21:19:17,512 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 21:19:17,512 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 21:19:17,512 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 21:19:17,512 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 21:19:17,512 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 21:19:17,512 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 21:19:17,513 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 21:19:17,513 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 21:19:17,513 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 21:19:17,513 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 21:19:17,513 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 21:19:17,513 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 21:19:17,514 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 21:19:17,514 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b23f88f1df76f11fbfc8e6288f4ade0e00ecdc2b8889a67f3774db6dfccf1d90 [2024-10-11 21:19:17,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 21:19:17,736 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 21:19:17,738 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 21:19:17,739 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 21:19:17,740 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 21:19:17,741 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_sqrt1.c [2024-10-11 21:19:18,995 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 21:19:19,127 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 21:19:19,127 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_sqrt1.c [2024-10-11 21:19:19,133 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/b77e86cda/33e8afb92caa4029bcfd8526f0e65183/FLAGc79fd50a0 [2024-10-11 21:19:19,146 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/b77e86cda/33e8afb92caa4029bcfd8526f0e65183 [2024-10-11 21:19:19,148 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 21:19:19,149 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 21:19:19,153 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 21:19:19,154 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 21:19:19,158 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 21:19:19,160 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 09:19:19" (1/1) ... [2024-10-11 21:19:19,161 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b3b7229 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:19:19, skipping insertion in model container [2024-10-11 21:19:19,161 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 09:19:19" (1/1) ... [2024-10-11 21:19:19,177 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 21:19:19,352 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 21:19:19,360 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 21:19:19,376 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 21:19:19,389 INFO L204 MainTranslator]: Completed translation [2024-10-11 21:19:19,389 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:19:19 WrapperNode [2024-10-11 21:19:19,389 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 21:19:19,390 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 21:19:19,390 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 21:19:19,391 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 21:19:19,396 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:19:19" (1/1) ... [2024-10-11 21:19:19,404 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:19:19" (1/1) ... [2024-10-11 21:19:19,421 INFO L138 Inliner]: procedures = 16, calls = 67, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 96 [2024-10-11 21:19:19,422 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 21:19:19,422 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 21:19:19,422 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 21:19:19,422 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 21:19:19,430 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:19:19" (1/1) ... [2024-10-11 21:19:19,430 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:19:19" (1/1) ... [2024-10-11 21:19:19,432 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:19:19" (1/1) ... [2024-10-11 21:19:19,448 INFO L175 MemorySlicer]: Split 41 memory accesses to 6 slices as follows [2, 8, 9, 8, 2, 12]. 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, 1, 2]. [2024-10-11 21:19:19,449 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:19:19" (1/1) ... [2024-10-11 21:19:19,449 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:19:19" (1/1) ... [2024-10-11 21:19:19,452 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:19:19" (1/1) ... [2024-10-11 21:19:19,454 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:19:19" (1/1) ... [2024-10-11 21:19:19,455 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:19:19" (1/1) ... [2024-10-11 21:19:19,456 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:19:19" (1/1) ... [2024-10-11 21:19:19,457 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 21:19:19,458 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 21:19:19,458 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 21:19:19,458 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 21:19:19,459 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:19:19" (1/1) ... [2024-10-11 21:19:19,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 21:19:19,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:19:19,483 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 21:19:19,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 21:19:19,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 21:19:19,518 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_28_to_39_0 [2024-10-11 21:19:19,518 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_28_to_39_0 [2024-10-11 21:19:19,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 21:19:19,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 21:19:19,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-11 21:19:19,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-11 21:19:19,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-11 21:19:19,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-11 21:19:19,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-11 21:19:19,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 21:19:19,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-11 21:19:19,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-11 21:19:19,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-11 21:19:19,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-11 21:19:19,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-10-11 21:19:19,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 21:19:19,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 21:19:19,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 21:19:19,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-11 21:19:19,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-11 21:19:19,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-11 21:19:19,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-11 21:19:19,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-10-11 21:19:19,520 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-11 21:19:19,520 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-11 21:19:19,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-11 21:19:19,594 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 21:19:19,595 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 21:19:19,919 INFO L? ?]: Removed 99 outVars from TransFormulas that were not future-live. [2024-10-11 21:19:19,919 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 21:19:19,956 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 21:19:19,957 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-11 21:19:19,957 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 09:19:19 BoogieIcfgContainer [2024-10-11 21:19:19,957 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 21:19:19,958 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 21:19:19,959 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 21:19:19,962 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 21:19:19,962 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 09:19:19" (1/3) ... [2024-10-11 21:19:19,962 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16fdc92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 09:19:19, skipping insertion in model container [2024-10-11 21:19:19,962 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:19:19" (2/3) ... [2024-10-11 21:19:19,963 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16fdc92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 09:19:19, skipping insertion in model container [2024-10-11 21:19:19,963 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 09:19:19" (3/3) ... [2024-10-11 21:19:19,964 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_sqrt1.c [2024-10-11 21:19:19,976 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 21:19:19,977 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 50 error locations. [2024-10-11 21:19:20,028 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 21:19:20,034 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;@583745f4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 21:19:20,034 INFO L334 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2024-10-11 21:19:20,037 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) [2024-10-11 21:19:20,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-10-11 21:19:20,041 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:20,042 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-10-11 21:19:20,042 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)] === [2024-10-11 21:19:20,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:20,046 INFO L85 PathProgramCache]: Analyzing trace with hash 182797673, now seen corresponding path program 1 times [2024-10-11 21:19:20,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:20,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566390635] [2024-10-11 21:19:20,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:20,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:20,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:20,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:19:20,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:20,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566390635] [2024-10-11 21:19:20,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566390635] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:20,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:19:20,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 21:19:20,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037150867] [2024-10-11 21:19:20,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:20,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:19:20,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:20,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:19:20,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:19:20,451 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) [2024-10-11 21:19:20,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:20,630 INFO L93 Difference]: Finished difference Result 320 states and 357 transitions. [2024-10-11 21:19:20,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 21:19:20,632 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 [2024-10-11 21:19:20,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:20,639 INFO L225 Difference]: With dead ends: 320 [2024-10-11 21:19:20,640 INFO L226 Difference]: Without dead ends: 193 [2024-10-11 21:19:20,644 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-11 21:19:20,647 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, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:20,648 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 563 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:19:20,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2024-10-11 21:19:20,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 156. [2024-10-11 21:19:20,693 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) [2024-10-11 21:19:20,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 183 transitions. [2024-10-11 21:19:20,698 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 183 transitions. Word has length 5 [2024-10-11 21:19:20,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:20,699 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 183 transitions. [2024-10-11 21:19:20,700 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) [2024-10-11 21:19:20,700 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 183 transitions. [2024-10-11 21:19:20,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-11 21:19:20,701 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:20,701 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:19:20,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 21:19:20,702 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)] === [2024-10-11 21:19:20,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:20,702 INFO L85 PathProgramCache]: Analyzing trace with hash -133385090, now seen corresponding path program 1 times [2024-10-11 21:19:20,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:20,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088199519] [2024-10-11 21:19:20,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:20,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:20,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:20,877 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-11 21:19:20,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:20,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:19:20,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:20,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088199519] [2024-10-11 21:19:20,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088199519] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:20,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:19:20,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:19:20,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346202764] [2024-10-11 21:19:20,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:20,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:19:20,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:20,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:19:20,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:19:20,889 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) [2024-10-11 21:19:21,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:21,019 INFO L93 Difference]: Finished difference Result 193 states and 203 transitions. [2024-10-11 21:19:21,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 21:19:21,019 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 [2024-10-11 21:19:21,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:21,020 INFO L225 Difference]: With dead ends: 193 [2024-10-11 21:19:21,020 INFO L226 Difference]: Without dead ends: 191 [2024-10-11 21:19:21,021 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 [2024-10-11 21:19:21,022 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 [2024-10-11 21:19:21,022 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] [2024-10-11 21:19:21,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-10-11 21:19:21,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 156. [2024-10-11 21:19:21,032 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) [2024-10-11 21:19:21,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 181 transitions. [2024-10-11 21:19:21,033 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 181 transitions. Word has length 15 [2024-10-11 21:19:21,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:21,033 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 181 transitions. [2024-10-11 21:19:21,034 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) [2024-10-11 21:19:21,034 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 181 transitions. [2024-10-11 21:19:21,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-11 21:19:21,034 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:21,034 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:19:21,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 21:19:21,035 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)] === [2024-10-11 21:19:21,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:21,035 INFO L85 PathProgramCache]: Analyzing trace with hash 665948896, now seen corresponding path program 1 times [2024-10-11 21:19:21,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:21,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442946265] [2024-10-11 21:19:21,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:21,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:21,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:21,185 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-11 21:19:21,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:21,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:19:21,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:21,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442946265] [2024-10-11 21:19:21,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442946265] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:21,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:19:21,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:19:21,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992669789] [2024-10-11 21:19:21,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:21,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:19:21,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:21,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:19:21,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:19:21,196 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) [2024-10-11 21:19:21,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:21,309 INFO L93 Difference]: Finished difference Result 191 states and 201 transitions. [2024-10-11 21:19:21,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 21:19:21,309 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 [2024-10-11 21:19:21,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:21,310 INFO L225 Difference]: With dead ends: 191 [2024-10-11 21:19:21,310 INFO L226 Difference]: Without dead ends: 189 [2024-10-11 21:19:21,311 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 [2024-10-11 21:19:21,312 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 [2024-10-11 21:19:21,313 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] [2024-10-11 21:19:21,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-10-11 21:19:21,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 156. [2024-10-11 21:19:21,323 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) [2024-10-11 21:19:21,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 179 transitions. [2024-10-11 21:19:21,325 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 179 transitions. Word has length 17 [2024-10-11 21:19:21,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:21,325 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 179 transitions. [2024-10-11 21:19:21,325 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) [2024-10-11 21:19:21,325 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 179 transitions. [2024-10-11 21:19:21,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-11 21:19:21,326 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:21,326 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:19:21,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 21:19:21,326 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)] === [2024-10-11 21:19:21,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:21,327 INFO L85 PathProgramCache]: Analyzing trace with hash 26763586, now seen corresponding path program 1 times [2024-10-11 21:19:21,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:21,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151378905] [2024-10-11 21:19:21,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:21,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:21,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:19:21,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1013193314] [2024-10-11 21:19:21,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:21,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:21,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:19:21,356 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:19:21,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 21:19:21,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:21,439 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-10-11 21:19:21,443 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:19:21,476 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 [2024-10-11 21:19:21,481 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 [2024-10-11 21:19:21,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:19:21,622 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 21:19:21,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:21,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151378905] [2024-10-11 21:19:21,623 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:19:21,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013193314] [2024-10-11 21:19:21,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013193314] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:21,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:19:21,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 21:19:21,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789389814] [2024-10-11 21:19:21,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:21,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 21:19:21,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:21,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 21:19:21,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-11 21:19:21,625 INFO L87 Difference]: Start difference. First operand 156 states and 179 transitions. Second operand has 9 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 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) [2024-10-11 21:19:21,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:21,796 INFO L93 Difference]: Finished difference Result 227 states and 236 transitions. [2024-10-11 21:19:21,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 21:19:21,796 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 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 [2024-10-11 21:19:21,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:21,797 INFO L225 Difference]: With dead ends: 227 [2024-10-11 21:19:21,797 INFO L226 Difference]: Without dead ends: 225 [2024-10-11 21:19:21,798 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2024-10-11 21:19:21,798 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 144 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:21,799 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 771 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:19:21,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2024-10-11 21:19:21,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 174. [2024-10-11 21:19:21,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 108 states have (on average 1.6759259259259258) internal successors, (181), 158 states have internal predecessors, (181), 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) [2024-10-11 21:19:21,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 206 transitions. [2024-10-11 21:19:21,825 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 206 transitions. Word has length 19 [2024-10-11 21:19:21,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:21,826 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 206 transitions. [2024-10-11 21:19:21,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 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) [2024-10-11 21:19:21,826 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 206 transitions. [2024-10-11 21:19:21,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-11 21:19:21,826 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:21,827 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] [2024-10-11 21:19:21,842 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 21:19:22,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:22,031 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)] === [2024-10-11 21:19:22,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:22,032 INFO L85 PathProgramCache]: Analyzing trace with hash 365629163, now seen corresponding path program 1 times [2024-10-11 21:19:22,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:22,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535007853] [2024-10-11 21:19:22,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:22,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:22,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:19:22,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1450730778] [2024-10-11 21:19:22,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:22,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:22,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:19:22,057 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:19:22,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 21:19:22,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:22,132 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-11 21:19:22,134 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:19:22,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-11 21:19:22,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-11 21:19:22,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-10-11 21:19:22,314 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:19:22,314 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:19:22,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:22,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535007853] [2024-10-11 21:19:22,407 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:19:22,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450730778] [2024-10-11 21:19:22,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450730778] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:19:22,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-11 21:19:22,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-10-11 21:19:22,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295004486] [2024-10-11 21:19:22,408 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-11 21:19:22,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 21:19:22,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:22,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 21:19:22,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-10-11 21:19:22,409 INFO L87 Difference]: Start difference. First operand 174 states and 206 transitions. Second operand has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 21:19:26,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 21:19:30,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 21:19:34,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 21:19:34,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:34,798 INFO L93 Difference]: Finished difference Result 229 states and 238 transitions. [2024-10-11 21:19:34,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 21:19:34,799 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2024-10-11 21:19:34,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:34,800 INFO L225 Difference]: With dead ends: 229 [2024-10-11 21:19:34,800 INFO L226 Difference]: Without dead ends: 228 [2024-10-11 21:19:34,801 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2024-10-11 21:19:34,801 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 239 mSDsluCounter, 770 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 19 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:34,802 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 858 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 352 Invalid, 3 Unknown, 0 Unchecked, 12.2s Time] [2024-10-11 21:19:34,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-10-11 21:19:34,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 174. [2024-10-11 21:19:34,810 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) [2024-10-11 21:19:34,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 205 transitions. [2024-10-11 21:19:34,811 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 205 transitions. Word has length 27 [2024-10-11 21:19:34,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:34,812 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 205 transitions. [2024-10-11 21:19:34,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 21:19:34,812 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 205 transitions. [2024-10-11 21:19:34,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-11 21:19:34,812 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:34,812 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] [2024-10-11 21:19:34,828 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 21:19:35,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:35,017 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)] === [2024-10-11 21:19:35,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:35,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1550397774, now seen corresponding path program 1 times [2024-10-11 21:19:35,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:35,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139448382] [2024-10-11 21:19:35,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:35,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:35,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:19:35,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [223796234] [2024-10-11 21:19:35,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:35,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:35,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:19:35,034 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:19:35,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 21:19:35,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:35,100 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-10-11 21:19:35,101 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:19:35,108 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 [2024-10-11 21:19:35,236 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:19:35,237 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:19:35,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:35,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139448382] [2024-10-11 21:19:35,409 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:19:35,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223796234] [2024-10-11 21:19:35,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223796234] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:19:35,409 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-11 21:19:35,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-10-11 21:19:35,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284872582] [2024-10-11 21:19:35,410 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-11 21:19:35,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 21:19:35,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:35,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 21:19:35,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-10-11 21:19:35,411 INFO L87 Difference]: Start difference. First operand 174 states and 205 transitions. Second operand has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 21:19:35,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:35,908 INFO L93 Difference]: Finished difference Result 228 states and 237 transitions. [2024-10-11 21:19:35,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 21:19:35,909 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2024-10-11 21:19:35,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:35,910 INFO L225 Difference]: With dead ends: 228 [2024-10-11 21:19:35,910 INFO L226 Difference]: Without dead ends: 227 [2024-10-11 21:19:35,910 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2024-10-11 21:19:35,911 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 234 mSDsluCounter, 774 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 863 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:35,911 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 863 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 21:19:35,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-10-11 21:19:35,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 174. [2024-10-11 21:19:35,916 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) [2024-10-11 21:19:35,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 204 transitions. [2024-10-11 21:19:35,917 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 204 transitions. Word has length 28 [2024-10-11 21:19:35,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:35,918 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 204 transitions. [2024-10-11 21:19:35,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 21:19:35,918 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 204 transitions. [2024-10-11 21:19:35,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-11 21:19:35,918 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:35,919 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] [2024-10-11 21:19:35,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-11 21:19:36,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:36,119 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)] === [2024-10-11 21:19:36,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:36,120 INFO L85 PathProgramCache]: Analyzing trace with hash -817690675, now seen corresponding path program 1 times [2024-10-11 21:19:36,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:36,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518245733] [2024-10-11 21:19:36,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:36,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:36,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:36,252 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-11 21:19:36,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:36,256 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-11 21:19:36,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:36,260 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 21:19:36,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:36,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518245733] [2024-10-11 21:19:36,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518245733] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:36,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:19:36,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:19:36,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980808624] [2024-10-11 21:19:36,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:36,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:19:36,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:36,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:19:36,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:19:36,263 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) [2024-10-11 21:19:36,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:36,404 INFO L93 Difference]: Finished difference Result 211 states and 221 transitions. [2024-10-11 21:19:36,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 21:19:36,405 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 [2024-10-11 21:19:36,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:36,405 INFO L225 Difference]: With dead ends: 211 [2024-10-11 21:19:36,407 INFO L226 Difference]: Without dead ends: 209 [2024-10-11 21:19:36,407 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 [2024-10-11 21:19:36,408 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 [2024-10-11 21:19:36,408 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] [2024-10-11 21:19:36,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2024-10-11 21:19:36,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 174. [2024-10-11 21:19:36,418 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) [2024-10-11 21:19:36,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 202 transitions. [2024-10-11 21:19:36,423 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 202 transitions. Word has length 29 [2024-10-11 21:19:36,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:36,423 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 202 transitions. [2024-10-11 21:19:36,423 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) [2024-10-11 21:19:36,423 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 202 transitions. [2024-10-11 21:19:36,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-10-11 21:19:36,424 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:36,424 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] [2024-10-11 21:19:36,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 21:19:36,424 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)] === [2024-10-11 21:19:36,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:36,425 INFO L85 PathProgramCache]: Analyzing trace with hash 178278575, now seen corresponding path program 1 times [2024-10-11 21:19:36,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:36,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908367212] [2024-10-11 21:19:36,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:36,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:36,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:19:36,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1220910846] [2024-10-11 21:19:36,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:36,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:36,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:19:36,456 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:19:36,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 21:19:36,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:36,523 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-10-11 21:19:36,526 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:19:36,536 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 [2024-10-11 21:19:36,553 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 [2024-10-11 21:19:36,863 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:19:36,863 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:19:37,073 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 38 treesize of output 26 [2024-10-11 21:19:37,142 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 21:19:37,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:37,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908367212] [2024-10-11 21:19:37,142 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:19:37,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220910846] [2024-10-11 21:19:37,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220910846] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:19:37,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 21:19:37,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 21 [2024-10-11 21:19:37,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647312988] [2024-10-11 21:19:37,143 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 21:19:37,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-11 21:19:37,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:37,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-11 21:19:37,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2024-10-11 21:19:37,144 INFO L87 Difference]: Start difference. First operand 174 states and 202 transitions. Second operand has 22 states, 19 states have (on average 2.736842105263158) internal successors, (52), 19 states have internal predecessors, (52), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2024-10-11 21:19:38,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:38,033 INFO L93 Difference]: Finished difference Result 229 states and 238 transitions. [2024-10-11 21:19:38,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-11 21:19:38,033 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 2.736842105263158) internal successors, (52), 19 states have internal predecessors, (52), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 31 [2024-10-11 21:19:38,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:38,034 INFO L225 Difference]: With dead ends: 229 [2024-10-11 21:19:38,034 INFO L226 Difference]: Without dead ends: 227 [2024-10-11 21:19:38,035 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=218, Invalid=972, Unknown=0, NotChecked=0, Total=1190 [2024-10-11 21:19:38,035 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 270 mSDsluCounter, 1202 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 1287 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:38,036 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 1287 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-11 21:19:38,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-10-11 21:19:38,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 174. [2024-10-11 21:19:38,043 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) [2024-10-11 21:19:38,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 200 transitions. [2024-10-11 21:19:38,044 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 200 transitions. Word has length 31 [2024-10-11 21:19:38,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:38,044 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 200 transitions. [2024-10-11 21:19:38,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 2.736842105263158) internal successors, (52), 19 states have internal predecessors, (52), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2024-10-11 21:19:38,045 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 200 transitions. [2024-10-11 21:19:38,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-10-11 21:19:38,046 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:38,046 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] [2024-10-11 21:19:38,059 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 21:19:38,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-11 21:19:38,251 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)] === [2024-10-11 21:19:38,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:38,251 INFO L85 PathProgramCache]: Analyzing trace with hash -472979055, now seen corresponding path program 1 times [2024-10-11 21:19:38,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:38,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328675470] [2024-10-11 21:19:38,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:38,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:38,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:38,367 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-11 21:19:38,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:38,370 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-11 21:19:38,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:38,375 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 21:19:38,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:38,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328675470] [2024-10-11 21:19:38,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328675470] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:38,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:19:38,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:19:38,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822494452] [2024-10-11 21:19:38,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:38,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:19:38,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:38,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:19:38,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:19:38,380 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) [2024-10-11 21:19:38,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:38,489 INFO L93 Difference]: Finished difference Result 211 states and 221 transitions. [2024-10-11 21:19:38,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 21:19:38,490 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 [2024-10-11 21:19:38,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:38,491 INFO L225 Difference]: With dead ends: 211 [2024-10-11 21:19:38,491 INFO L226 Difference]: Without dead ends: 209 [2024-10-11 21:19:38,491 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 [2024-10-11 21:19:38,492 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 [2024-10-11 21:19:38,492 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] [2024-10-11 21:19:38,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2024-10-11 21:19:38,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 174. [2024-10-11 21:19:38,500 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) [2024-10-11 21:19:38,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 198 transitions. [2024-10-11 21:19:38,502 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 198 transitions. Word has length 33 [2024-10-11 21:19:38,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:38,502 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 198 transitions. [2024-10-11 21:19:38,502 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) [2024-10-11 21:19:38,503 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 198 transitions. [2024-10-11 21:19:38,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-10-11 21:19:38,505 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:38,505 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] [2024-10-11 21:19:38,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 21:19:38,505 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)] === [2024-10-11 21:19:38,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:38,506 INFO L85 PathProgramCache]: Analyzing trace with hash 733663859, now seen corresponding path program 1 times [2024-10-11 21:19:38,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:38,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027927509] [2024-10-11 21:19:38,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:38,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:38,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:38,648 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-11 21:19:38,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:38,652 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-11 21:19:38,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:38,655 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 21:19:38,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:38,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027927509] [2024-10-11 21:19:38,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027927509] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:38,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:19:38,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 21:19:38,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826317003] [2024-10-11 21:19:38,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:38,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 21:19:38,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:38,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 21:19:38,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-11 21:19:38,657 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) [2024-10-11 21:19:38,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:38,888 INFO L93 Difference]: Finished difference Result 209 states and 219 transitions. [2024-10-11 21:19:38,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 21:19:38,888 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 [2024-10-11 21:19:38,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:38,889 INFO L225 Difference]: With dead ends: 209 [2024-10-11 21:19:38,889 INFO L226 Difference]: Without dead ends: 207 [2024-10-11 21:19:38,889 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 [2024-10-11 21:19:38,890 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 97 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:38,890 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 606 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 21:19:38,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-10-11 21:19:38,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 174. [2024-10-11 21:19:38,895 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) [2024-10-11 21:19:38,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 196 transitions. [2024-10-11 21:19:38,896 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 196 transitions. Word has length 35 [2024-10-11 21:19:38,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:38,896 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 196 transitions. [2024-10-11 21:19:38,896 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) [2024-10-11 21:19:38,897 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 196 transitions. [2024-10-11 21:19:38,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-10-11 21:19:38,897 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:38,897 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] [2024-10-11 21:19:38,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 21:19:38,897 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)] === [2024-10-11 21:19:38,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:38,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1268743226, now seen corresponding path program 1 times [2024-10-11 21:19:38,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:38,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842709532] [2024-10-11 21:19:38,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:38,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:38,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:39,150 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-11 21:19:39,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:39,154 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-11 21:19:39,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:39,157 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 21:19:39,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:39,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842709532] [2024-10-11 21:19:39,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842709532] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:39,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:19:39,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 21:19:39,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478208580] [2024-10-11 21:19:39,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:39,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 21:19:39,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:39,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 21:19:39,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 21:19:39,159 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) [2024-10-11 21:19:39,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:39,535 INFO L93 Difference]: Finished difference Result 199 states and 209 transitions. [2024-10-11 21:19:39,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 21:19:39,536 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 [2024-10-11 21:19:39,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:39,537 INFO L225 Difference]: With dead ends: 199 [2024-10-11 21:19:39,537 INFO L226 Difference]: Without dead ends: 197 [2024-10-11 21:19:39,537 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-11 21:19:39,537 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 95 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:39,538 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 577 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 21:19:39,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-10-11 21:19:39,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 174. [2024-10-11 21:19:39,543 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) [2024-10-11 21:19:39,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 194 transitions. [2024-10-11 21:19:39,544 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 194 transitions. Word has length 36 [2024-10-11 21:19:39,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:39,544 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 194 transitions. [2024-10-11 21:19:39,544 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) [2024-10-11 21:19:39,544 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 194 transitions. [2024-10-11 21:19:39,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-10-11 21:19:39,545 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:39,545 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] [2024-10-11 21:19:39,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-11 21:19:39,545 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)] === [2024-10-11 21:19:39,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:39,546 INFO L85 PathProgramCache]: Analyzing trace with hash -536299601, now seen corresponding path program 1 times [2024-10-11 21:19:39,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:39,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215973978] [2024-10-11 21:19:39,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:39,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:39,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:39,652 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-11 21:19:39,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:39,655 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-11 21:19:39,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:39,657 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-11 21:19:39,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:39,659 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 21:19:39,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:39,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215973978] [2024-10-11 21:19:39,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215973978] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:39,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:19:39,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:19:39,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164381055] [2024-10-11 21:19:39,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:39,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:19:39,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:39,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:19:39,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:19:39,661 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) [2024-10-11 21:19:39,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:39,738 INFO L93 Difference]: Finished difference Result 184 states and 198 transitions. [2024-10-11 21:19:39,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 21:19:39,739 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 [2024-10-11 21:19:39,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:39,741 INFO L225 Difference]: With dead ends: 184 [2024-10-11 21:19:39,741 INFO L226 Difference]: Without dead ends: 182 [2024-10-11 21:19:39,741 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 [2024-10-11 21:19:39,742 INFO L432 NwaCegarLoop]: 116 mSDtfsCounter, 49 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2024-10-11 21:19:39,743 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] [2024-10-11 21:19:39,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-10-11 21:19:39,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 176. [2024-10-11 21:19:39,748 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) [2024-10-11 21:19:39,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 196 transitions. [2024-10-11 21:19:39,752 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 196 transitions. Word has length 46 [2024-10-11 21:19:39,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:39,752 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 196 transitions. [2024-10-11 21:19:39,753 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) [2024-10-11 21:19:39,753 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 196 transitions. [2024-10-11 21:19:39,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-10-11 21:19:39,753 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:39,753 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] [2024-10-11 21:19:39,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-11 21:19:39,753 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)] === [2024-10-11 21:19:39,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:39,754 INFO L85 PathProgramCache]: Analyzing trace with hash 12161873, now seen corresponding path program 1 times [2024-10-11 21:19:39,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:39,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490396533] [2024-10-11 21:19:39,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:39,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:39,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:39,865 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-11 21:19:39,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:39,872 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-11 21:19:39,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:39,876 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-11 21:19:39,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:39,879 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 21:19:39,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:39,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490396533] [2024-10-11 21:19:39,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490396533] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:39,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:19:39,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:19:39,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102857454] [2024-10-11 21:19:39,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:39,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:19:39,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:39,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:19:39,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:19:39,882 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) [2024-10-11 21:19:39,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:39,978 INFO L93 Difference]: Finished difference Result 203 states and 213 transitions. [2024-10-11 21:19:39,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 21:19:39,978 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 [2024-10-11 21:19:39,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:39,979 INFO L225 Difference]: With dead ends: 203 [2024-10-11 21:19:39,979 INFO L226 Difference]: Without dead ends: 201 [2024-10-11 21:19:39,980 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 [2024-10-11 21:19:39,980 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 [2024-10-11 21:19:39,980 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] [2024-10-11 21:19:39,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-10-11 21:19:39,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 178. [2024-10-11 21:19:39,986 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) [2024-10-11 21:19:39,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 198 transitions. [2024-10-11 21:19:39,986 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 198 transitions. Word has length 48 [2024-10-11 21:19:39,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:39,987 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 198 transitions. [2024-10-11 21:19:39,987 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) [2024-10-11 21:19:39,987 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 198 transitions. [2024-10-11 21:19:39,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-10-11 21:19:39,987 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:39,987 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] [2024-10-11 21:19:39,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-11 21:19:39,987 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)] === [2024-10-11 21:19:39,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:39,988 INFO L85 PathProgramCache]: Analyzing trace with hash 376631387, now seen corresponding path program 1 times [2024-10-11 21:19:39,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:39,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7411063] [2024-10-11 21:19:39,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:39,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:39,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:40,056 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 21:19:40,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:40,088 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-11 21:19:40,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:40,091 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-11 21:19:40,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:40,094 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-11 21:19:40,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:40,096 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 21:19:40,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:40,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7411063] [2024-10-11 21:19:40,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7411063] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:40,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:19:40,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:19:40,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935200166] [2024-10-11 21:19:40,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:40,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:19:40,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:40,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:19:40,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:19:40,097 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) [2024-10-11 21:19:40,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:40,183 INFO L93 Difference]: Finished difference Result 186 states and 200 transitions. [2024-10-11 21:19:40,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 21:19:40,183 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 [2024-10-11 21:19:40,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:40,184 INFO L225 Difference]: With dead ends: 186 [2024-10-11 21:19:40,184 INFO L226 Difference]: Without dead ends: 182 [2024-10-11 21:19:40,185 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 [2024-10-11 21:19:40,185 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 100 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:40,185 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 349 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:19:40,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-10-11 21:19:40,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 180. [2024-10-11 21:19:40,191 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) [2024-10-11 21:19:40,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 196 transitions. [2024-10-11 21:19:40,192 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 196 transitions. Word has length 49 [2024-10-11 21:19:40,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:40,192 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 196 transitions. [2024-10-11 21:19:40,192 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) [2024-10-11 21:19:40,192 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 196 transitions. [2024-10-11 21:19:40,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-11 21:19:40,193 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:40,193 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] [2024-10-11 21:19:40,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-11 21:19:40,193 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)] === [2024-10-11 21:19:40,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:40,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1197338893, now seen corresponding path program 1 times [2024-10-11 21:19:40,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:40,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682518748] [2024-10-11 21:19:40,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:40,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:40,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:40,435 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-11 21:19:40,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:40,439 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-11 21:19:40,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:40,443 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-11 21:19:40,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:40,446 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 21:19:40,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:40,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682518748] [2024-10-11 21:19:40,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682518748] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:40,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:19:40,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 21:19:40,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331067517] [2024-10-11 21:19:40,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:40,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 21:19:40,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:40,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 21:19:40,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 21:19:40,448 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) [2024-10-11 21:19:40,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:40,602 INFO L93 Difference]: Finished difference Result 194 states and 205 transitions. [2024-10-11 21:19:40,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 21:19:40,603 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 [2024-10-11 21:19:40,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:40,604 INFO L225 Difference]: With dead ends: 194 [2024-10-11 21:19:40,604 INFO L226 Difference]: Without dead ends: 193 [2024-10-11 21:19:40,604 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-10-11 21:19:40,604 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 [2024-10-11 21:19:40,604 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] [2024-10-11 21:19:40,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2024-10-11 21:19:40,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 181. [2024-10-11 21:19:40,610 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) [2024-10-11 21:19:40,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 197 transitions. [2024-10-11 21:19:40,611 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 197 transitions. Word has length 50 [2024-10-11 21:19:40,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:40,612 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 197 transitions. [2024-10-11 21:19:40,612 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) [2024-10-11 21:19:40,612 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 197 transitions. [2024-10-11 21:19:40,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-10-11 21:19:40,613 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:40,613 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] [2024-10-11 21:19:40,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-11 21:19:40,614 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)] === [2024-10-11 21:19:40,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:40,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1537200080, now seen corresponding path program 1 times [2024-10-11 21:19:40,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:40,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695613014] [2024-10-11 21:19:40,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:40,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:40,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:40,851 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-11 21:19:40,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:40,855 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-11 21:19:40,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:40,858 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-11 21:19:40,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:40,861 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 21:19:40,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:40,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695613014] [2024-10-11 21:19:40,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695613014] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:40,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:19:40,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 21:19:40,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910142772] [2024-10-11 21:19:40,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:40,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 21:19:40,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:40,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 21:19:40,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 21:19:40,863 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) [2024-10-11 21:19:40,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:40,994 INFO L93 Difference]: Finished difference Result 194 states and 204 transitions. [2024-10-11 21:19:40,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 21:19:40,994 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 [2024-10-11 21:19:40,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:40,995 INFO L225 Difference]: With dead ends: 194 [2024-10-11 21:19:40,995 INFO L226 Difference]: Without dead ends: 193 [2024-10-11 21:19:40,996 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-10-11 21:19:40,996 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 [2024-10-11 21:19:40,996 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] [2024-10-11 21:19:40,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2024-10-11 21:19:41,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 182. [2024-10-11 21:19:41,003 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) [2024-10-11 21:19:41,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 198 transitions. [2024-10-11 21:19:41,004 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 198 transitions. Word has length 51 [2024-10-11 21:19:41,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:41,004 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 198 transitions. [2024-10-11 21:19:41,005 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) [2024-10-11 21:19:41,005 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 198 transitions. [2024-10-11 21:19:41,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-11 21:19:41,005 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:41,005 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] [2024-10-11 21:19:41,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-11 21:19:41,006 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)] === [2024-10-11 21:19:41,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:41,006 INFO L85 PathProgramCache]: Analyzing trace with hash -454679621, now seen corresponding path program 1 times [2024-10-11 21:19:41,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:41,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962345013] [2024-10-11 21:19:41,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:41,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:41,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:41,230 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-11 21:19:41,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:41,233 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-11 21:19:41,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:41,235 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-11 21:19:41,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:41,236 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 21:19:41,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:41,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962345013] [2024-10-11 21:19:41,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962345013] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:19:41,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479988388] [2024-10-11 21:19:41,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:41,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:41,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:19:41,239 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:19:41,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 21:19:41,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:41,323 INFO L255 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-11 21:19:41,325 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:19:41,512 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 [2024-10-11 21:19:41,541 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 [2024-10-11 21:19:41,553 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 21:19:41,554 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:19:41,715 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 21:19:41,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479988388] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:19:41,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 21:19:41,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 20 [2024-10-11 21:19:41,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68228287] [2024-10-11 21:19:41,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 21:19:41,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-11 21:19:41,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:41,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-11 21:19:41,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2024-10-11 21:19:41,717 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) [2024-10-11 21:19:42,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:42,012 INFO L93 Difference]: Finished difference Result 187 states and 205 transitions. [2024-10-11 21:19:42,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 21:19:42,013 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 [2024-10-11 21:19:42,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:42,014 INFO L225 Difference]: With dead ends: 187 [2024-10-11 21:19:42,014 INFO L226 Difference]: Without dead ends: 184 [2024-10-11 21:19:42,014 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 98 SyntacticMatches, 7 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2024-10-11 21:19:42,015 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 485 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:42,015 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 961 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 21:19:42,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-10-11 21:19:42,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 179. [2024-10-11 21:19:42,022 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) [2024-10-11 21:19:42,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 195 transitions. [2024-10-11 21:19:42,023 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 195 transitions. Word has length 55 [2024-10-11 21:19:42,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:42,023 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 195 transitions. [2024-10-11 21:19:42,024 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) [2024-10-11 21:19:42,024 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 195 transitions. [2024-10-11 21:19:42,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-11 21:19:42,024 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:42,025 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] [2024-10-11 21:19:42,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-11 21:19:42,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-11 21:19:42,225 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)] === [2024-10-11 21:19:42,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:42,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1210166326, now seen corresponding path program 1 times [2024-10-11 21:19:42,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:42,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247907867] [2024-10-11 21:19:42,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:42,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:42,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:42,430 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-11 21:19:42,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:42,433 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-11 21:19:42,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:42,438 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-11 21:19:42,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:42,445 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 21:19:42,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:42,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247907867] [2024-10-11 21:19:42,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247907867] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:19:42,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136808815] [2024-10-11 21:19:42,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:42,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:42,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:19:42,449 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:19:42,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 21:19:42,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:42,544 INFO L255 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-10-11 21:19:42,548 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:19:42,550 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 [2024-10-11 21:19:42,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-10-11 21:19:42,763 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 36 treesize of output 13 [2024-10-11 21:19:42,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-11 21:19:42,780 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 21:19:42,781 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:19:42,996 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 [2024-10-11 21:19:43,048 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 21:19:43,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136808815] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:19:43,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 21:19:43,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 12] total 28 [2024-10-11 21:19:43,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714150020] [2024-10-11 21:19:43,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 21:19:43,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-10-11 21:19:43,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:43,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-10-11 21:19:43,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=719, Unknown=0, NotChecked=0, Total=812 [2024-10-11 21:19:43,050 INFO L87 Difference]: Start difference. First operand 179 states and 195 transitions. Second operand has 29 states, 25 states have (on average 4.84) internal successors, (121), 24 states have internal predecessors, (121), 10 states have call successors, (14), 7 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2024-10-11 21:19:43,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:43,662 INFO L93 Difference]: Finished difference Result 333 states and 355 transitions. [2024-10-11 21:19:43,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-11 21:19:43,666 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 25 states have (on average 4.84) internal successors, (121), 24 states have internal predecessors, (121), 10 states have call successors, (14), 7 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) Word has length 56 [2024-10-11 21:19:43,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:43,667 INFO L225 Difference]: With dead ends: 333 [2024-10-11 21:19:43,668 INFO L226 Difference]: Without dead ends: 330 [2024-10-11 21:19:43,668 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 94 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=252, Invalid=1554, Unknown=0, NotChecked=0, Total=1806 [2024-10-11 21:19:43,669 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 575 mSDsluCounter, 1658 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 1754 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:43,669 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [576 Valid, 1754 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 21:19:43,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2024-10-11 21:19:43,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 256. [2024-10-11 21:19:43,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 181 states have (on average 1.5248618784530388) internal successors, (276), 229 states have internal predecessors, (276), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-10-11 21:19:43,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 322 transitions. [2024-10-11 21:19:43,679 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 322 transitions. Word has length 56 [2024-10-11 21:19:43,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:43,679 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 322 transitions. [2024-10-11 21:19:43,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 25 states have (on average 4.84) internal successors, (121), 24 states have internal predecessors, (121), 10 states have call successors, (14), 7 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2024-10-11 21:19:43,679 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 322 transitions. [2024-10-11 21:19:43,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-11 21:19:43,679 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:43,679 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1] [2024-10-11 21:19:43,692 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-11 21:19:43,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-11 21:19:43,880 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_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)] === [2024-10-11 21:19:43,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:43,881 INFO L85 PathProgramCache]: Analyzing trace with hash -936037320, now seen corresponding path program 1 times [2024-10-11 21:19:43,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:43,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052510144] [2024-10-11 21:19:43,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:43,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:43,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:43,947 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 21:19:43,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:43,987 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-11 21:19:43,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:43,990 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-11 21:19:43,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:43,992 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-11 21:19:43,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:43,995 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-11 21:19:43,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:43,998 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-11 21:19:43,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:43,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052510144] [2024-10-11 21:19:43,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052510144] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:43,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:19:43,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:19:43,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529452977] [2024-10-11 21:19:43,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:43,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:19:43,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:43,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:19:44,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:19:44,000 INFO L87 Difference]: Start difference. First operand 256 states and 322 transitions. Second operand has 6 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 21:19:44,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:44,106 INFO L93 Difference]: Finished difference Result 261 states and 323 transitions. [2024-10-11 21:19:44,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 21:19:44,107 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 59 [2024-10-11 21:19:44,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:44,108 INFO L225 Difference]: With dead ends: 261 [2024-10-11 21:19:44,109 INFO L226 Difference]: Without dead ends: 259 [2024-10-11 21:19:44,109 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-11 21:19:44,109 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 89 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:44,110 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 331 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:19:44,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2024-10-11 21:19:44,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 256. [2024-10-11 21:19:44,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 181 states have (on average 1.5138121546961325) internal successors, (274), 229 states have internal predecessors, (274), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-10-11 21:19:44,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 320 transitions. [2024-10-11 21:19:44,123 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 320 transitions. Word has length 59 [2024-10-11 21:19:44,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:44,123 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 320 transitions. [2024-10-11 21:19:44,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 21:19:44,123 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 320 transitions. [2024-10-11 21:19:44,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-11 21:19:44,124 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:44,124 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:19:44,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-11 21:19:44,124 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6ASSERT_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)] === [2024-10-11 21:19:44,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:44,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1883695718, now seen corresponding path program 1 times [2024-10-11 21:19:44,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:44,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621356421] [2024-10-11 21:19:44,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:44,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:44,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:44,198 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 21:19:44,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:44,223 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-11 21:19:44,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:44,226 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-11 21:19:44,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:44,228 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-11 21:19:44,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:44,231 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-11 21:19:44,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:44,234 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-11 21:19:44,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:44,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621356421] [2024-10-11 21:19:44,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621356421] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:44,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:19:44,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:19:44,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567250592] [2024-10-11 21:19:44,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:44,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:19:44,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:44,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:19:44,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:19:44,236 INFO L87 Difference]: Start difference. First operand 256 states and 320 transitions. Second operand has 6 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 21:19:44,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:44,346 INFO L93 Difference]: Finished difference Result 259 states and 321 transitions. [2024-10-11 21:19:44,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 21:19:44,347 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 61 [2024-10-11 21:19:44,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:44,348 INFO L225 Difference]: With dead ends: 259 [2024-10-11 21:19:44,348 INFO L226 Difference]: Without dead ends: 257 [2024-10-11 21:19:44,348 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:19:44,348 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 58 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:44,349 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 367 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:19:44,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2024-10-11 21:19:44,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 256. [2024-10-11 21:19:44,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 181 states have (on average 1.5027624309392265) internal successors, (272), 229 states have internal predecessors, (272), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-10-11 21:19:44,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 318 transitions. [2024-10-11 21:19:44,362 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 318 transitions. Word has length 61 [2024-10-11 21:19:44,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:44,362 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 318 transitions. [2024-10-11 21:19:44,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 21:19:44,362 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 318 transitions. [2024-10-11 21:19:44,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-11 21:19:44,363 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:44,363 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:19:44,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-11 21:19:44,364 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8ASSERT_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)] === [2024-10-11 21:19:44,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:44,365 INFO L85 PathProgramCache]: Analyzing trace with hash -2050349316, now seen corresponding path program 1 times [2024-10-11 21:19:44,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:44,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957858598] [2024-10-11 21:19:44,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:44,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:44,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:19:44,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1211939072] [2024-10-11 21:19:44,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:44,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:44,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:19:44,384 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:19:44,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 21:19:44,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:44,467 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-11 21:19:44,469 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:19:44,474 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 [2024-10-11 21:19:44,576 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 21:19:44,576 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 21:19:44,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:44,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957858598] [2024-10-11 21:19:44,577 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:19:44,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211939072] [2024-10-11 21:19:44,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211939072] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:44,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:19:44,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 21:19:44,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884527175] [2024-10-11 21:19:44,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:44,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 21:19:44,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:44,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 21:19:44,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-11 21:19:44,578 INFO L87 Difference]: Start difference. First operand 256 states and 318 transitions. Second operand has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 7 states have internal predecessors, (47), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 21:19:44,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:44,720 INFO L93 Difference]: Finished difference Result 283 states and 342 transitions. [2024-10-11 21:19:44,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 21:19:44,720 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 7 states have internal predecessors, (47), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 63 [2024-10-11 21:19:44,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:44,722 INFO L225 Difference]: With dead ends: 283 [2024-10-11 21:19:44,722 INFO L226 Difference]: Without dead ends: 281 [2024-10-11 21:19:44,722 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-11 21:19:44,723 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 92 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 22 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:44,723 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 449 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 132 Invalid, 4 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:19:44,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2024-10-11 21:19:44,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 256. [2024-10-11 21:19:44,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 181 states have (on average 1.4917127071823204) internal successors, (270), 229 states have internal predecessors, (270), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-10-11 21:19:44,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 316 transitions. [2024-10-11 21:19:44,737 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 316 transitions. Word has length 63 [2024-10-11 21:19:44,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:44,738 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 316 transitions. [2024-10-11 21:19:44,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 7 states have internal predecessors, (47), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 21:19:44,738 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 316 transitions. [2024-10-11 21:19:44,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-11 21:19:44,738 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:44,738 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:19:44,753 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-11 21:19:44,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:44,942 INFO L396 AbstractCegarLoop]: === Iteration 22 === 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)] === [2024-10-11 21:19:44,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:44,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1448170576, now seen corresponding path program 1 times [2024-10-11 21:19:44,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:44,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521809242] [2024-10-11 21:19:44,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:44,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:44,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:45,028 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-11 21:19:45,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:45,032 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-11 21:19:45,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:45,034 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-11 21:19:45,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:45,039 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-11 21:19:45,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:45,043 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-11 21:19:45,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:45,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521809242] [2024-10-11 21:19:45,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521809242] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:45,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:19:45,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:19:45,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720349075] [2024-10-11 21:19:45,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:45,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:19:45,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:45,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:19:45,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:19:45,046 INFO L87 Difference]: Start difference. First operand 256 states and 316 transitions. Second operand has 6 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-11 21:19:45,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:45,121 INFO L93 Difference]: Finished difference Result 256 states and 316 transitions. [2024-10-11 21:19:45,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 21:19:45,121 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 65 [2024-10-11 21:19:45,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:45,123 INFO L225 Difference]: With dead ends: 256 [2024-10-11 21:19:45,123 INFO L226 Difference]: Without dead ends: 255 [2024-10-11 21:19:45,124 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-11 21:19:45,124 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 52 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:45,124 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 457 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:19:45,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-10-11 21:19:45,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2024-10-11 21:19:45,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 181 states have (on average 1.4751381215469612) internal successors, (267), 228 states have internal predecessors, (267), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-10-11 21:19:45,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 313 transitions. [2024-10-11 21:19:45,138 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 313 transitions. Word has length 65 [2024-10-11 21:19:45,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:45,138 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 313 transitions. [2024-10-11 21:19:45,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-11 21:19:45,138 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 313 transitions. [2024-10-11 21:19:45,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-11 21:19:45,139 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:45,139 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:19:45,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-11 21:19:45,139 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting func_to_recursive_line_28_to_39_0Err5ASSERT_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)] === [2024-10-11 21:19:45,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:45,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1943614943, now seen corresponding path program 1 times [2024-10-11 21:19:45,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:45,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466413738] [2024-10-11 21:19:45,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:45,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:45,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:45,205 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-11 21:19:45,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:45,206 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-11 21:19:45,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:45,208 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-11 21:19:45,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:45,210 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-11 21:19:45,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:45,213 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-11 21:19:45,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:45,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466413738] [2024-10-11 21:19:45,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466413738] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:45,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:19:45,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:19:45,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966569569] [2024-10-11 21:19:45,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:45,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:19:45,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:45,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:19:45,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:19:45,215 INFO L87 Difference]: Start difference. First operand 255 states and 313 transitions. Second operand has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-11 21:19:45,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:45,279 INFO L93 Difference]: Finished difference Result 255 states and 313 transitions. [2024-10-11 21:19:45,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 21:19:45,279 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 66 [2024-10-11 21:19:45,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:45,281 INFO L225 Difference]: With dead ends: 255 [2024-10-11 21:19:45,281 INFO L226 Difference]: Without dead ends: 254 [2024-10-11 21:19:45,281 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-11 21:19:45,282 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 49 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:45,282 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 363 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 21:19:45,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2024-10-11 21:19:45,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2024-10-11 21:19:45,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 181 states have (on average 1.4585635359116023) internal successors, (264), 227 states have internal predecessors, (264), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-10-11 21:19:45,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 310 transitions. [2024-10-11 21:19:45,295 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 310 transitions. Word has length 66 [2024-10-11 21:19:45,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:45,295 INFO L471 AbstractCegarLoop]: Abstraction has 254 states and 310 transitions. [2024-10-11 21:19:45,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-11 21:19:45,296 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 310 transitions. [2024-10-11 21:19:45,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-10-11 21:19:45,296 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:45,296 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:19:45,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-11 21:19:45,296 INFO L396 AbstractCegarLoop]: === Iteration 24 === 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)] === [2024-10-11 21:19:45,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:45,297 INFO L85 PathProgramCache]: Analyzing trace with hash 122521138, now seen corresponding path program 1 times [2024-10-11 21:19:45,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:45,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451102901] [2024-10-11 21:19:45,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:45,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:45,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:45,373 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-11 21:19:45,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:45,375 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-11 21:19:45,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:45,377 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-11 21:19:45,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:45,378 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-11 21:19:45,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:45,383 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-11 21:19:45,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:45,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451102901] [2024-10-11 21:19:45,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451102901] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:45,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:19:45,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:19:45,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930391546] [2024-10-11 21:19:45,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:45,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:19:45,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:45,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:19:45,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:19:45,385 INFO L87 Difference]: Start difference. First operand 254 states and 310 transitions. Second operand has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-11 21:19:45,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:45,459 INFO L93 Difference]: Finished difference Result 254 states and 310 transitions. [2024-10-11 21:19:45,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 21:19:45,459 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 67 [2024-10-11 21:19:45,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:45,460 INFO L225 Difference]: With dead ends: 254 [2024-10-11 21:19:45,461 INFO L226 Difference]: Without dead ends: 253 [2024-10-11 21:19:45,461 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-11 21:19:45,461 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 44 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:45,463 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 449 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:19:45,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2024-10-11 21:19:45,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2024-10-11 21:19:45,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 181 states have (on average 1.441988950276243) internal successors, (261), 226 states have internal predecessors, (261), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-10-11 21:19:45,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 307 transitions. [2024-10-11 21:19:45,474 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 307 transitions. Word has length 67 [2024-10-11 21:19:45,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:45,474 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 307 transitions. [2024-10-11 21:19:45,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-11 21:19:45,475 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 307 transitions. [2024-10-11 21:19:45,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-11 21:19:45,475 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:45,475 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:19:45,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-11 21:19:45,477 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting func_to_recursive_line_28_to_39_0Err7ASSERT_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)] === [2024-10-11 21:19:45,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:45,478 INFO L85 PathProgramCache]: Analyzing trace with hash -496811967, now seen corresponding path program 1 times [2024-10-11 21:19:45,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:45,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345254815] [2024-10-11 21:19:45,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:45,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:45,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:45,541 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-11 21:19:45,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:45,543 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-11 21:19:45,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:45,544 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-11 21:19:45,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:45,545 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-11 21:19:45,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:45,549 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-11 21:19:45,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:45,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345254815] [2024-10-11 21:19:45,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345254815] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:45,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:19:45,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:19:45,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244188179] [2024-10-11 21:19:45,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:45,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:19:45,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:45,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:19:45,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:19:45,551 INFO L87 Difference]: Start difference. First operand 253 states and 307 transitions. Second operand has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-11 21:19:45,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:45,656 INFO L93 Difference]: Finished difference Result 253 states and 307 transitions. [2024-10-11 21:19:45,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 21:19:45,658 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 68 [2024-10-11 21:19:45,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:45,660 INFO L225 Difference]: With dead ends: 253 [2024-10-11 21:19:45,660 INFO L226 Difference]: Without dead ends: 252 [2024-10-11 21:19:45,660 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-11 21:19:45,660 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 41 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:45,660 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 389 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:19:45,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2024-10-11 21:19:45,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2024-10-11 21:19:45,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 181 states have (on average 1.425414364640884) internal successors, (258), 225 states have internal predecessors, (258), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-10-11 21:19:45,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 304 transitions. [2024-10-11 21:19:45,673 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 304 transitions. Word has length 68 [2024-10-11 21:19:45,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:45,674 INFO L471 AbstractCegarLoop]: Abstraction has 252 states and 304 transitions. [2024-10-11 21:19:45,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-11 21:19:45,677 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 304 transitions. [2024-10-11 21:19:45,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-11 21:19:45,678 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:45,678 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:19:45,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-11 21:19:45,678 INFO L396 AbstractCegarLoop]: === Iteration 26 === 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)] === [2024-10-11 21:19:45,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:45,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1778698260, now seen corresponding path program 1 times [2024-10-11 21:19:45,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:45,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210675433] [2024-10-11 21:19:45,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:45,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:45,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:19:45,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [112584001] [2024-10-11 21:19:45,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:45,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:45,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:19:45,705 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:19:45,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 21:19:45,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:45,794 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 21:19:45,796 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:19:45,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-11 21:19:45,809 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-10-11 21:19:45,809 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 21:19:45,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:45,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210675433] [2024-10-11 21:19:45,809 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:19:45,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112584001] [2024-10-11 21:19:45,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112584001] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:45,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:19:45,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 21:19:45,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531600313] [2024-10-11 21:19:45,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:45,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 21:19:45,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:45,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 21:19:45,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 21:19:45,812 INFO L87 Difference]: Start difference. First operand 252 states and 304 transitions. Second operand has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-10-11 21:19:45,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:45,846 INFO L93 Difference]: Finished difference Result 252 states and 304 transitions. [2024-10-11 21:19:45,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 21:19:45,846 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 69 [2024-10-11 21:19:45,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:45,847 INFO L225 Difference]: With dead ends: 252 [2024-10-11 21:19:45,847 INFO L226 Difference]: Without dead ends: 251 [2024-10-11 21:19:45,847 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-11 21:19:45,848 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 7 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:45,848 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 319 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 21:19:45,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2024-10-11 21:19:45,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2024-10-11 21:19:45,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 181 states have (on average 1.408839779005525) internal successors, (255), 224 states have internal predecessors, (255), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-10-11 21:19:45,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 301 transitions. [2024-10-11 21:19:45,866 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 301 transitions. Word has length 69 [2024-10-11 21:19:45,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:45,866 INFO L471 AbstractCegarLoop]: Abstraction has 251 states and 301 transitions. [2024-10-11 21:19:45,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-10-11 21:19:45,866 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 301 transitions. [2024-10-11 21:19:45,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-10-11 21:19:45,867 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:45,867 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:19:45,880 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-11 21:19:46,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-10-11 21:19:46,067 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting func_to_recursive_line_28_to_39_0Err9ASSERT_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)] === [2024-10-11 21:19:46,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:46,068 INFO L85 PathProgramCache]: Analyzing trace with hash -694928733, now seen corresponding path program 1 times [2024-10-11 21:19:46,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:46,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615812932] [2024-10-11 21:19:46,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:46,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:46,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:19:46,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [796707853] [2024-10-11 21:19:46,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:46,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:46,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:19:46,091 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:19:46,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-11 21:19:46,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:46,186 INFO L255 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-10-11 21:19:46,188 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:19:46,192 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 [2024-10-11 21:19:46,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-11 21:19:46,386 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 21:19:46,386 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:19:46,637 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-11 21:19:46,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:46,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615812932] [2024-10-11 21:19:46,637 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:19:46,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796707853] [2024-10-11 21:19:46,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796707853] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:19:46,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 21:19:46,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 19 [2024-10-11 21:19:46,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010565988] [2024-10-11 21:19:46,638 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 21:19:46,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-11 21:19:46,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:46,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-11 21:19:46,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2024-10-11 21:19:46,639 INFO L87 Difference]: Start difference. First operand 251 states and 301 transitions. Second operand has 20 states, 17 states have (on average 6.176470588235294) internal successors, (105), 16 states have internal predecessors, (105), 6 states have call successors, (12), 7 states have call predecessors, (12), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-10-11 21:19:47,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:47,296 INFO L93 Difference]: Finished difference Result 361 states and 381 transitions. [2024-10-11 21:19:47,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-11 21:19:47,296 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 6.176470588235294) internal successors, (105), 16 states have internal predecessors, (105), 6 states have call successors, (12), 7 states have call predecessors, (12), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 70 [2024-10-11 21:19:47,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:47,298 INFO L225 Difference]: With dead ends: 361 [2024-10-11 21:19:47,298 INFO L226 Difference]: Without dead ends: 360 [2024-10-11 21:19:47,298 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 114 SyntacticMatches, 6 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=199, Invalid=793, Unknown=0, NotChecked=0, Total=992 [2024-10-11 21:19:47,298 INFO L432 NwaCegarLoop]: 161 mSDtfsCounter, 490 mSDsluCounter, 1573 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 1734 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:47,299 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 1734 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 21:19:47,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2024-10-11 21:19:47,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 269. [2024-10-11 21:19:47,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 196 states have (on average 1.4183673469387754) internal successors, (278), 239 states have internal predecessors, (278), 22 states have call successors, (22), 7 states have call predecessors, (22), 10 states have return successors, (28), 22 states have call predecessors, (28), 22 states have call successors, (28) [2024-10-11 21:19:47,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 328 transitions. [2024-10-11 21:19:47,313 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 328 transitions. Word has length 70 [2024-10-11 21:19:47,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:47,313 INFO L471 AbstractCegarLoop]: Abstraction has 269 states and 328 transitions. [2024-10-11 21:19:47,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 6.176470588235294) internal successors, (105), 16 states have internal predecessors, (105), 6 states have call successors, (12), 7 states have call predecessors, (12), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-10-11 21:19:47,314 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 328 transitions. [2024-10-11 21:19:47,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-11 21:19:47,315 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:47,315 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:19:47,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-11 21:19:47,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:47,516 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr10ASSERT_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)] === [2024-10-11 21:19:47,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:47,517 INFO L85 PathProgramCache]: Analyzing trace with hash 603475053, now seen corresponding path program 1 times [2024-10-11 21:19:47,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:47,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667333225] [2024-10-11 21:19:47,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:47,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:47,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:19:47,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1214755823] [2024-10-11 21:19:47,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:47,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:47,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:19:47,539 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:19:47,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-11 21:19:47,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:47,633 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 21:19:47,637 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:19:47,640 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 [2024-10-11 21:19:47,737 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-11 21:19:47,738 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 21:19:47,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:47,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667333225] [2024-10-11 21:19:47,738 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:19:47,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214755823] [2024-10-11 21:19:47,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214755823] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:47,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:19:47,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:19:47,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932990599] [2024-10-11 21:19:47,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:47,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:19:47,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:47,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:19:47,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:19:47,740 INFO L87 Difference]: Start difference. First operand 269 states and 328 transitions. Second operand has 6 states, 5 states have (on average 10.0) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-11 21:19:47,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:47,894 INFO L93 Difference]: Finished difference Result 294 states and 352 transitions. [2024-10-11 21:19:47,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 21:19:47,898 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.0) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 71 [2024-10-11 21:19:47,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:47,899 INFO L225 Difference]: With dead ends: 294 [2024-10-11 21:19:47,899 INFO L226 Difference]: Without dead ends: 293 [2024-10-11 21:19:47,900 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 64 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-10-11 21:19:47,900 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 102 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:47,900 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 394 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:19:47,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2024-10-11 21:19:47,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 271. [2024-10-11 21:19:47,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 198 states have (on average 1.4141414141414141) internal successors, (280), 240 states have internal predecessors, (280), 22 states have call successors, (22), 7 states have call predecessors, (22), 10 states have return successors, (28), 23 states have call predecessors, (28), 22 states have call successors, (28) [2024-10-11 21:19:47,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 330 transitions. [2024-10-11 21:19:47,912 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 330 transitions. Word has length 71 [2024-10-11 21:19:47,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:47,912 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 330 transitions. [2024-10-11 21:19:47,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.0) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-11 21:19:47,912 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 330 transitions. [2024-10-11 21:19:47,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-10-11 21:19:47,913 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:47,913 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:19:47,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-11 21:19:48,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-10-11 21:19:48,114 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr11ASSERT_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)] === [2024-10-11 21:19:48,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:48,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1527857596, now seen corresponding path program 1 times [2024-10-11 21:19:48,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:48,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528773960] [2024-10-11 21:19:48,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:48,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:48,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:19:48,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [43640226] [2024-10-11 21:19:48,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:48,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:48,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:19:48,135 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:19:48,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-11 21:19:48,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:48,224 INFO L255 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 21:19:48,225 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:19:48,227 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 [2024-10-11 21:19:48,322 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-11 21:19:48,322 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 21:19:48,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:48,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528773960] [2024-10-11 21:19:48,323 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:19:48,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43640226] [2024-10-11 21:19:48,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43640226] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:48,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:19:48,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:19:48,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992771813] [2024-10-11 21:19:48,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:48,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:19:48,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:48,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:19:48,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:19:48,326 INFO L87 Difference]: Start difference. First operand 271 states and 330 transitions. Second operand has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-11 21:19:48,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:48,495 INFO L93 Difference]: Finished difference Result 293 states and 351 transitions. [2024-10-11 21:19:48,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 21:19:48,495 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 72 [2024-10-11 21:19:48,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:48,497 INFO L225 Difference]: With dead ends: 293 [2024-10-11 21:19:48,497 INFO L226 Difference]: Without dead ends: 292 [2024-10-11 21:19:48,498 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 65 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-10-11 21:19:48,498 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 100 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:48,500 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 396 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:19:48,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2024-10-11 21:19:48,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 272. [2024-10-11 21:19:48,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 199 states have (on average 1.4120603015075377) internal successors, (281), 241 states have internal predecessors, (281), 22 states have call successors, (22), 7 states have call predecessors, (22), 10 states have return successors, (28), 23 states have call predecessors, (28), 22 states have call successors, (28) [2024-10-11 21:19:48,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 331 transitions. [2024-10-11 21:19:48,518 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 331 transitions. Word has length 72 [2024-10-11 21:19:48,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:48,519 INFO L471 AbstractCegarLoop]: Abstraction has 272 states and 331 transitions. [2024-10-11 21:19:48,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-11 21:19:48,519 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 331 transitions. [2024-10-11 21:19:48,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-11 21:19:48,520 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:48,521 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:19:48,534 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-11 21:19:48,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-10-11 21:19:48,722 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr12ASSERT_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)] === [2024-10-11 21:19:48,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:48,723 INFO L85 PathProgramCache]: Analyzing trace with hash 118945359, now seen corresponding path program 1 times [2024-10-11 21:19:48,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:48,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70639909] [2024-10-11 21:19:48,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:48,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:48,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:48,802 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 21:19:48,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:48,829 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-11 21:19:48,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:48,832 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-11 21:19:48,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:48,834 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-11 21:19:48,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:48,836 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-11 21:19:48,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:48,837 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-11 21:19:48,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:48,839 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-11 21:19:48,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:48,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70639909] [2024-10-11 21:19:48,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70639909] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:48,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:19:48,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:19:48,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84740075] [2024-10-11 21:19:48,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:48,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:19:48,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:48,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:19:48,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:19:48,841 INFO L87 Difference]: Start difference. First operand 272 states and 331 transitions. Second operand has 6 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-11 21:19:48,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:48,985 INFO L93 Difference]: Finished difference Result 286 states and 350 transitions. [2024-10-11 21:19:48,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 21:19:48,985 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 73 [2024-10-11 21:19:48,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:48,987 INFO L225 Difference]: With dead ends: 286 [2024-10-11 21:19:48,987 INFO L226 Difference]: Without dead ends: 284 [2024-10-11 21:19:48,987 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:19:48,987 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 68 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:48,988 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 307 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:19:48,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2024-10-11 21:19:48,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 274. [2024-10-11 21:19:48,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 201 states have (on average 1.407960199004975) internal successors, (283), 243 states have internal predecessors, (283), 22 states have call successors, (22), 7 states have call predecessors, (22), 10 states have return successors, (28), 23 states have call predecessors, (28), 22 states have call successors, (28) [2024-10-11 21:19:48,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 333 transitions. [2024-10-11 21:19:48,998 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 333 transitions. Word has length 73 [2024-10-11 21:19:48,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:48,998 INFO L471 AbstractCegarLoop]: Abstraction has 274 states and 333 transitions. [2024-10-11 21:19:48,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-11 21:19:48,999 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 333 transitions. [2024-10-11 21:19:48,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-10-11 21:19:48,999 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:48,999 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:19:48,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-10-11 21:19:49,000 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr14ASSERT_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)] === [2024-10-11 21:19:49,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:49,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1657622479, now seen corresponding path program 1 times [2024-10-11 21:19:49,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:49,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762033414] [2024-10-11 21:19:49,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:49,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:49,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:19:49,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [261938260] [2024-10-11 21:19:49,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:49,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:49,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:19:49,026 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:19:49,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-11 21:19:49,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:49,120 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-11 21:19:49,121 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:19:49,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-11 21:19:49,129 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 [2024-10-11 21:19:49,353 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-11 21:19:49,353 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 21:19:49,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:49,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762033414] [2024-10-11 21:19:49,353 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:19:49,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261938260] [2024-10-11 21:19:49,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261938260] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:49,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:19:49,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 21:19:49,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082025601] [2024-10-11 21:19:49,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:49,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 21:19:49,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:49,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 21:19:49,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-11 21:19:49,355 INFO L87 Difference]: Start difference. First operand 274 states and 333 transitions. Second operand has 7 states, 6 states have (on average 9.0) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-11 21:19:49,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:49,559 INFO L93 Difference]: Finished difference Result 290 states and 348 transitions. [2024-10-11 21:19:49,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 21:19:49,560 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.0) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 75 [2024-10-11 21:19:49,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:49,561 INFO L225 Difference]: With dead ends: 290 [2024-10-11 21:19:49,561 INFO L226 Difference]: Without dead ends: 288 [2024-10-11 21:19:49,562 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 67 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-10-11 21:19:49,562 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 91 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 19 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:49,562 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 440 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 207 Invalid, 2 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 21:19:49,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2024-10-11 21:19:49,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 276. [2024-10-11 21:19:49,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 203 states have (on average 1.4039408866995073) internal successors, (285), 245 states have internal predecessors, (285), 22 states have call successors, (22), 7 states have call predecessors, (22), 10 states have return successors, (28), 23 states have call predecessors, (28), 22 states have call successors, (28) [2024-10-11 21:19:49,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 335 transitions. [2024-10-11 21:19:49,573 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 335 transitions. Word has length 75 [2024-10-11 21:19:49,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:49,573 INFO L471 AbstractCegarLoop]: Abstraction has 276 states and 335 transitions. [2024-10-11 21:19:49,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.0) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-11 21:19:49,574 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 335 transitions. [2024-10-11 21:19:49,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-10-11 21:19:49,574 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:49,574 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:19:49,588 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-11 21:19:49,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:49,775 INFO L396 AbstractCegarLoop]: === Iteration 32 === 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)] === [2024-10-11 21:19:49,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:49,776 INFO L85 PathProgramCache]: Analyzing trace with hash 915702717, now seen corresponding path program 1 times [2024-10-11 21:19:49,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:49,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953199927] [2024-10-11 21:19:49,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:49,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:49,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:19:49,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1761738444] [2024-10-11 21:19:49,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:49,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:49,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:19:49,799 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:19:49,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-11 21:19:49,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:49,907 INFO L255 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-10-11 21:19:49,910 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:19:49,912 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 [2024-10-11 21:19:49,915 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 [2024-10-11 21:19:50,128 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-11 21:19:50,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-11 21:19:50,300 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-11 21:19:50,300 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:19:50,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:50,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953199927] [2024-10-11 21:19:50,358 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:19:50,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761738444] [2024-10-11 21:19:50,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761738444] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:19:50,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-11 21:19:50,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-10-11 21:19:50,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256757786] [2024-10-11 21:19:50,359 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-11 21:19:50,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 21:19:50,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:50,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 21:19:50,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2024-10-11 21:19:50,360 INFO L87 Difference]: Start difference. First operand 276 states and 335 transitions. Second operand has 13 states, 11 states have (on average 5.090909090909091) internal successors, (56), 10 states have internal predecessors, (56), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 21:19:50,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:50,726 INFO L93 Difference]: Finished difference Result 337 states and 370 transitions. [2024-10-11 21:19:50,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 21:19:50,727 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 5.090909090909091) internal successors, (56), 10 states have internal predecessors, (56), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 77 [2024-10-11 21:19:50,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:50,728 INFO L225 Difference]: With dead ends: 337 [2024-10-11 21:19:50,728 INFO L226 Difference]: Without dead ends: 336 [2024-10-11 21:19:50,728 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 58 SyntacticMatches, 8 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2024-10-11 21:19:50,729 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 249 mSDsluCounter, 1049 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:50,729 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 1194 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 21:19:50,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2024-10-11 21:19:50,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 276. [2024-10-11 21:19:50,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 203 states have (on average 1.3990147783251232) internal successors, (284), 245 states have internal predecessors, (284), 22 states have call successors, (22), 7 states have call predecessors, (22), 10 states have return successors, (28), 23 states have call predecessors, (28), 22 states have call successors, (28) [2024-10-11 21:19:50,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 334 transitions. [2024-10-11 21:19:50,741 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 334 transitions. Word has length 77 [2024-10-11 21:19:50,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:50,741 INFO L471 AbstractCegarLoop]: Abstraction has 276 states and 334 transitions. [2024-10-11 21:19:50,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 5.090909090909091) internal successors, (56), 10 states have internal predecessors, (56), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 21:19:50,741 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 334 transitions. [2024-10-11 21:19:50,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-10-11 21:19:50,741 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:50,742 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:19:50,755 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-11 21:19:50,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:50,947 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr16ASSERT_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)] === [2024-10-11 21:19:50,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:50,947 INFO L85 PathProgramCache]: Analyzing trace with hash 457669139, now seen corresponding path program 1 times [2024-10-11 21:19:50,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:50,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819454727] [2024-10-11 21:19:50,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:50,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:50,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:51,025 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 21:19:51,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:51,052 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-11 21:19:51,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:51,054 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-11 21:19:51,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:51,056 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-11 21:19:51,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:51,058 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-11 21:19:51,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:51,060 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-11 21:19:51,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:51,063 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-11 21:19:51,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:51,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819454727] [2024-10-11 21:19:51,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819454727] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:51,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:19:51,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:19:51,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816367373] [2024-10-11 21:19:51,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:51,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:19:51,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:51,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:19:51,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:19:51,064 INFO L87 Difference]: Start difference. First operand 276 states and 334 transitions. Second operand has 6 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-11 21:19:51,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:51,183 INFO L93 Difference]: Finished difference Result 284 states and 345 transitions. [2024-10-11 21:19:51,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 21:19:51,183 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 77 [2024-10-11 21:19:51,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:51,184 INFO L225 Difference]: With dead ends: 284 [2024-10-11 21:19:51,184 INFO L226 Difference]: Without dead ends: 282 [2024-10-11 21:19:51,185 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:19:51,185 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 58 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:51,186 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 329 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:19:51,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2024-10-11 21:19:51,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 278. [2024-10-11 21:19:51,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 205 states have (on average 1.395121951219512) internal successors, (286), 247 states have internal predecessors, (286), 22 states have call successors, (22), 7 states have call predecessors, (22), 10 states have return successors, (28), 23 states have call predecessors, (28), 22 states have call successors, (28) [2024-10-11 21:19:51,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 336 transitions. [2024-10-11 21:19:51,198 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 336 transitions. Word has length 77 [2024-10-11 21:19:51,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:51,200 INFO L471 AbstractCegarLoop]: Abstraction has 278 states and 336 transitions. [2024-10-11 21:19:51,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-11 21:19:51,200 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 336 transitions. [2024-10-11 21:19:51,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-10-11 21:19:51,201 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:51,201 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:19:51,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-10-11 21:19:51,201 INFO L396 AbstractCegarLoop]: === Iteration 34 === 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)] === [2024-10-11 21:19:51,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:51,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1677986784, now seen corresponding path program 1 times [2024-10-11 21:19:51,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:51,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918897675] [2024-10-11 21:19:51,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:51,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:51,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:19:51,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1281460691] [2024-10-11 21:19:51,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:51,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:51,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:19:51,233 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:19:51,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-11 21:19:51,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:51,349 INFO L255 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-10-11 21:19:51,352 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:19:51,355 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 [2024-10-11 21:19:51,700 INFO L349 Elim1Store]: treesize reduction 29, result has 34.1 percent of original size [2024-10-11 21:19:51,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 29 [2024-10-11 21:19:51,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-11 21:19:51,862 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 2 proven. 48 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-11 21:19:51,863 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:19:52,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:52,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918897675] [2024-10-11 21:19:52,023 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:19:52,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281460691] [2024-10-11 21:19:52,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281460691] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:19:52,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-11 21:19:52,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-10-11 21:19:52,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77101616] [2024-10-11 21:19:52,023 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-11 21:19:52,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 21:19:52,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:52,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 21:19:52,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2024-10-11 21:19:52,024 INFO L87 Difference]: Start difference. First operand 278 states and 336 transitions. Second operand has 18 states, 16 states have (on average 3.75) internal successors, (60), 14 states have internal predecessors, (60), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2024-10-11 21:19:52,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:52,824 INFO L93 Difference]: Finished difference Result 334 states and 367 transitions. [2024-10-11 21:19:52,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-11 21:19:52,824 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 3.75) internal successors, (60), 14 states have internal predecessors, (60), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 78 [2024-10-11 21:19:52,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:52,826 INFO L225 Difference]: With dead ends: 334 [2024-10-11 21:19:52,826 INFO L226 Difference]: Without dead ends: 333 [2024-10-11 21:19:52,826 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 57 SyntacticMatches, 6 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=150, Invalid=780, Unknown=0, NotChecked=0, Total=930 [2024-10-11 21:19:52,827 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 289 mSDsluCounter, 1393 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 1531 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:52,827 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 1531 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 801 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-11 21:19:52,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2024-10-11 21:19:52,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 278. [2024-10-11 21:19:52,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 205 states have (on average 1.3902439024390243) internal successors, (285), 247 states have internal predecessors, (285), 22 states have call successors, (22), 7 states have call predecessors, (22), 10 states have return successors, (28), 23 states have call predecessors, (28), 22 states have call successors, (28) [2024-10-11 21:19:52,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 335 transitions. [2024-10-11 21:19:52,838 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 335 transitions. Word has length 78 [2024-10-11 21:19:52,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:52,838 INFO L471 AbstractCegarLoop]: Abstraction has 278 states and 335 transitions. [2024-10-11 21:19:52,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 3.75) internal successors, (60), 14 states have internal predecessors, (60), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2024-10-11 21:19:52,838 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 335 transitions. [2024-10-11 21:19:52,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-10-11 21:19:52,839 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:52,839 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:19:52,852 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-11 21:19:53,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-10-11 21:19:53,044 INFO L396 AbstractCegarLoop]: === Iteration 35 === 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)] === [2024-10-11 21:19:53,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:53,044 INFO L85 PathProgramCache]: Analyzing trace with hash -477982689, now seen corresponding path program 1 times [2024-10-11 21:19:53,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:53,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985767405] [2024-10-11 21:19:53,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:53,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:53,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:53,390 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-11 21:19:53,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:53,393 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-11 21:19:53,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:53,395 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-11 21:19:53,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:53,402 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-11 21:19:53,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:53,404 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-11 21:19:53,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:53,409 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-11 21:19:53,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:53,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985767405] [2024-10-11 21:19:53,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985767405] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:19:53,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94695753] [2024-10-11 21:19:53,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:53,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:53,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:19:53,411 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:19:53,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-11 21:19:53,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:53,520 INFO L255 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-10-11 21:19:53,522 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:19:53,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-11 21:19:53,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-11 21:19:53,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-11 21:19:54,028 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 [2024-10-11 21:19:54,096 INFO L349 Elim1Store]: treesize reduction 20, result has 58.3 percent of original size [2024-10-11 21:19:54,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 43 [2024-10-11 21:19:54,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-11 21:19:54,259 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 47 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-11 21:19:54,260 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:19:54,627 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 30 treesize of output 22 [2024-10-11 21:19:54,705 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-11 21:19:54,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94695753] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:19:54,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 21:19:54,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 15, 13] total 33 [2024-10-11 21:19:54,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222060395] [2024-10-11 21:19:54,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 21:19:54,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-10-11 21:19:54,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:54,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-10-11 21:19:54,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1000, Unknown=0, NotChecked=0, Total=1122 [2024-10-11 21:19:54,707 INFO L87 Difference]: Start difference. First operand 278 states and 335 transitions. Second operand has 34 states, 30 states have (on average 5.133333333333334) internal successors, (154), 28 states have internal predecessors, (154), 10 states have call successors, (20), 9 states have call predecessors, (20), 5 states have return successors, (15), 5 states have call predecessors, (15), 7 states have call successors, (15) [2024-10-11 21:19:58,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 21:20:03,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 21:20:07,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 21:20:11,690 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 21:20:15,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 21:20:19,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 21:20:23,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 21:20:27,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 21:20:31,957 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 21:20:35,965 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 21:20:39,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 21:20:43,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 21:20:43,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:20:43,995 INFO L93 Difference]: Finished difference Result 335 states and 366 transitions. [2024-10-11 21:20:43,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-11 21:20:43,996 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 30 states have (on average 5.133333333333334) internal successors, (154), 28 states have internal predecessors, (154), 10 states have call successors, (20), 9 states have call predecessors, (20), 5 states have return successors, (15), 5 states have call predecessors, (15), 7 states have call successors, (15) Word has length 79 [2024-10-11 21:20:43,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:20:43,997 INFO L225 Difference]: With dead ends: 335 [2024-10-11 21:20:43,997 INFO L226 Difference]: Without dead ends: 334 [2024-10-11 21:20:43,998 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 137 SyntacticMatches, 7 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=318, Invalid=2334, Unknown=0, NotChecked=0, Total=2652 [2024-10-11 21:20:43,998 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 418 mSDsluCounter, 1911 mSDsCounter, 0 mSdLazyCounter, 1420 mSolverCounterSat, 58 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 2033 SdHoareTripleChecker+Invalid, 1490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1420 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.9s IncrementalHoareTripleChecker+Time [2024-10-11 21:20:43,998 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 2033 Invalid, 1490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1420 Invalid, 12 Unknown, 0 Unchecked, 48.9s Time] [2024-10-11 21:20:43,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2024-10-11 21:20:44,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 278. [2024-10-11 21:20:44,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 205 states have (on average 1.3853658536585365) internal successors, (284), 247 states have internal predecessors, (284), 22 states have call successors, (22), 7 states have call predecessors, (22), 10 states have return successors, (28), 23 states have call predecessors, (28), 22 states have call successors, (28) [2024-10-11 21:20:44,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 334 transitions. [2024-10-11 21:20:44,010 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 334 transitions. Word has length 79 [2024-10-11 21:20:44,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:20:44,010 INFO L471 AbstractCegarLoop]: Abstraction has 278 states and 334 transitions. [2024-10-11 21:20:44,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 30 states have (on average 5.133333333333334) internal successors, (154), 28 states have internal predecessors, (154), 10 states have call successors, (20), 9 states have call predecessors, (20), 5 states have return successors, (15), 5 states have call predecessors, (15), 7 states have call successors, (15) [2024-10-11 21:20:44,011 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 334 transitions. [2024-10-11 21:20:44,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-10-11 21:20:44,011 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:20:44,011 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:20:44,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-10-11 21:20:44,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-10-11 21:20:44,212 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr18ASSERT_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)] === [2024-10-11 21:20:44,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:20:44,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1733383157, now seen corresponding path program 1 times [2024-10-11 21:20:44,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:20:44,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845709861] [2024-10-11 21:20:44,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:20:44,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:20:44,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:20:44,314 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 21:20:44,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:20:44,338 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-11 21:20:44,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:20:44,342 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-11 21:20:44,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:20:44,343 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-11 21:20:44,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:20:44,345 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-11 21:20:44,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:20:44,346 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-11 21:20:44,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:20:44,348 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-11 21:20:44,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:20:44,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845709861] [2024-10-11 21:20:44,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845709861] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:20:44,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:20:44,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 21:20:44,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142154361] [2024-10-11 21:20:44,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:20:44,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 21:20:44,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:20:44,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 21:20:44,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 21:20:44,350 INFO L87 Difference]: Start difference. First operand 278 states and 334 transitions. Second operand has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-11 21:20:44,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:20:44,517 INFO L93 Difference]: Finished difference Result 284 states and 341 transitions. [2024-10-11 21:20:44,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 21:20:44,517 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 79 [2024-10-11 21:20:44,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:20:44,518 INFO L225 Difference]: With dead ends: 284 [2024-10-11 21:20:44,518 INFO L226 Difference]: Without dead ends: 282 [2024-10-11 21:20:44,520 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 21:20:44,520 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 76 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 21:20:44,520 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 300 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 21:20:44,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2024-10-11 21:20:44,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 281. [2024-10-11 21:20:44,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 208 states have (on average 1.3846153846153846) internal successors, (288), 250 states have internal predecessors, (288), 22 states have call successors, (22), 7 states have call predecessors, (22), 10 states have return successors, (28), 23 states have call predecessors, (28), 22 states have call successors, (28) [2024-10-11 21:20:44,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 338 transitions. [2024-10-11 21:20:44,533 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 338 transitions. Word has length 79 [2024-10-11 21:20:44,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:20:44,534 INFO L471 AbstractCegarLoop]: Abstraction has 281 states and 338 transitions. [2024-10-11 21:20:44,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-11 21:20:44,534 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 338 transitions. [2024-10-11 21:20:44,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-10-11 21:20:44,534 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:20:44,534 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:20:44,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-10-11 21:20:44,535 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting func_to_recursive_line_28_to_39_0Err13ASSERT_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)] === [2024-10-11 21:20:44,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:20:44,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1932561406, now seen corresponding path program 1 times [2024-10-11 21:20:44,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:20:44,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671479208] [2024-10-11 21:20:44,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:20:44,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:20:44,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:20:44,853 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-11 21:20:44,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:20:44,856 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-11 21:20:44,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:20:44,859 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-11 21:20:44,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:20:44,861 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-11 21:20:44,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:20:44,864 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-11 21:20:44,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:20:44,866 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-11 21:20:44,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:20:44,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671479208] [2024-10-11 21:20:44,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671479208] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:20:44,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940619106] [2024-10-11 21:20:44,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:20:44,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:20:44,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:20:44,870 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:20:44,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-11 21:20:44,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:20:44,978 INFO L255 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-10-11 21:20:44,980 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:20:44,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-11 21:20:44,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-11 21:20:45,043 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-11 21:20:45,482 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 [2024-10-11 21:20:45,542 INFO L349 Elim1Store]: treesize reduction 20, result has 58.3 percent of original size [2024-10-11 21:20:45,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 43 [2024-10-11 21:20:45,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-11 21:20:45,667 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 50 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-11 21:20:45,668 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:20:45,942 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 29 treesize of output 21 [2024-10-11 21:20:46,005 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-11 21:20:46,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940619106] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:20:46,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 21:20:46,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 15, 13] total 33 [2024-10-11 21:20:46,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493956911] [2024-10-11 21:20:46,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 21:20:46,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-10-11 21:20:46,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:20:46,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-10-11 21:20:46,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=979, Unknown=0, NotChecked=0, Total=1122 [2024-10-11 21:20:46,007 INFO L87 Difference]: Start difference. First operand 281 states and 338 transitions. Second operand has 34 states, 30 states have (on average 5.2) internal successors, (156), 28 states have internal predecessors, (156), 10 states have call successors, (20), 9 states have call predecessors, (20), 5 states have return successors, (15), 5 states have call predecessors, (15), 7 states have call successors, (15) [2024-10-11 21:20:47,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:20:47,019 INFO L93 Difference]: Finished difference Result 332 states and 363 transitions. [2024-10-11 21:20:47,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-11 21:20:47,019 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 30 states have (on average 5.2) internal successors, (156), 28 states have internal predecessors, (156), 10 states have call successors, (20), 9 states have call predecessors, (20), 5 states have return successors, (15), 5 states have call predecessors, (15), 7 states have call successors, (15) Word has length 80 [2024-10-11 21:20:47,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:20:47,021 INFO L225 Difference]: With dead ends: 332 [2024-10-11 21:20:47,022 INFO L226 Difference]: Without dead ends: 331 [2024-10-11 21:20:47,022 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 139 SyntacticMatches, 6 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=307, Invalid=1855, Unknown=0, NotChecked=0, Total=2162 [2024-10-11 21:20:47,022 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 458 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 1224 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-11 21:20:47,023 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 1224 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 814 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-11 21:20:47,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2024-10-11 21:20:47,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 281. [2024-10-11 21:20:47,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 208 states have (on average 1.3798076923076923) internal successors, (287), 250 states have internal predecessors, (287), 22 states have call successors, (22), 7 states have call predecessors, (22), 10 states have return successors, (28), 23 states have call predecessors, (28), 22 states have call successors, (28) [2024-10-11 21:20:47,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 337 transitions. [2024-10-11 21:20:47,035 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 337 transitions. Word has length 80 [2024-10-11 21:20:47,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:20:47,036 INFO L471 AbstractCegarLoop]: Abstraction has 281 states and 337 transitions. [2024-10-11 21:20:47,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 30 states have (on average 5.2) internal successors, (156), 28 states have internal predecessors, (156), 10 states have call successors, (20), 9 states have call predecessors, (20), 5 states have return successors, (15), 5 states have call predecessors, (15), 7 states have call successors, (15) [2024-10-11 21:20:47,036 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 337 transitions. [2024-10-11 21:20:47,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-10-11 21:20:47,036 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:20:47,036 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:20:47,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-10-11 21:20:47,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-10-11 21:20:47,237 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr19ASSERT_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)] === [2024-10-11 21:20:47,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:20:47,237 INFO L85 PathProgramCache]: Analyzing trace with hash -2099696828, now seen corresponding path program 1 times [2024-10-11 21:20:47,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:20:47,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974652139] [2024-10-11 21:20:47,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:20:47,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:20:47,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:20:47,429 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 21:20:47,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:20:47,503 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-11 21:20:47,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:20:47,506 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-11 21:20:47,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:20:47,508 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-11 21:20:47,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:20:47,512 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-11 21:20:47,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:20:47,514 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-11 21:20:47,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:20:47,516 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-11 21:20:47,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:20:47,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974652139] [2024-10-11 21:20:47,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974652139] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:20:47,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:20:47,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 21:20:47,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399008490] [2024-10-11 21:20:47,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:20:47,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 21:20:47,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:20:47,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 21:20:47,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-11 21:20:47,519 INFO L87 Difference]: Start difference. First operand 281 states and 337 transitions. Second operand has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-11 21:20:47,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:20:47,883 INFO L93 Difference]: Finished difference Result 284 states and 338 transitions. [2024-10-11 21:20:47,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 21:20:47,883 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 80 [2024-10-11 21:20:47,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:20:47,885 INFO L225 Difference]: With dead ends: 284 [2024-10-11 21:20:47,885 INFO L226 Difference]: Without dead ends: 253 [2024-10-11 21:20:47,885 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-11 21:20:47,885 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 55 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 21:20:47,885 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 381 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 21:20:47,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2024-10-11 21:20:47,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2024-10-11 21:20:47,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 183 states have (on average 1.4207650273224044) internal successors, (260), 225 states have internal predecessors, (260), 20 states have call successors, (20), 7 states have call predecessors, (20), 9 states have return successors, (25), 20 states have call predecessors, (25), 20 states have call successors, (25) [2024-10-11 21:20:47,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 305 transitions. [2024-10-11 21:20:47,896 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 305 transitions. Word has length 80 [2024-10-11 21:20:47,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:20:47,896 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 305 transitions. [2024-10-11 21:20:47,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-11 21:20:47,897 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 305 transitions. [2024-10-11 21:20:47,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-10-11 21:20:47,897 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:20:47,897 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:20:47,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-10-11 21:20:47,897 INFO L396 AbstractCegarLoop]: === Iteration 39 === 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)] === [2024-10-11 21:20:47,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:20:47,898 INFO L85 PathProgramCache]: Analyzing trace with hash 220138625, now seen corresponding path program 1 times [2024-10-11 21:20:47,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:20:47,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427184399] [2024-10-11 21:20:47,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:20:47,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:20:47,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:20:47,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [368269694] [2024-10-11 21:20:47,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:20:47,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:20:47,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:20:47,918 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:20:47,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-11 21:20:48,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:20:48,030 INFO L255 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-10-11 21:20:48,033 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:20:48,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-11 21:20:48,156 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 36 treesize of output 13 [2024-10-11 21:20:48,170 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 15 treesize of output 1 [2024-10-11 21:20:48,326 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 21:20:48,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 36 [2024-10-11 21:20:48,479 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 21:20:48,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2024-10-11 21:20:48,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2024-10-11 21:20:48,646 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 22 proven. 27 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 21:20:48,647 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:20:48,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:20:48,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427184399] [2024-10-11 21:20:48,921 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:20:48,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368269694] [2024-10-11 21:20:48,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368269694] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:20:48,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-11 21:20:48,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2024-10-11 21:20:48,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187910505] [2024-10-11 21:20:48,922 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-11 21:20:48,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-11 21:20:48,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:20:48,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-11 21:20:48,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=650, Unknown=0, NotChecked=0, Total=756 [2024-10-11 21:20:48,923 INFO L87 Difference]: Start difference. First operand 253 states and 305 transitions. Second operand has 23 states, 21 states have (on average 3.0) internal successors, (63), 16 states have internal predecessors, (63), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-10-11 21:20:52,931 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]