./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_ps4-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_ps4-ll.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 35431d6758accd7fd2ee5ddf2b1a76a0fd5efeada0a27759fb5cb6b7d4ed3c08 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 19:09:13,890 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 19:09:13,943 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-20 19:09:13,946 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 19:09:13,947 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 19:09:13,971 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 19:09:13,971 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 19:09:13,972 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 19:09:13,972 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 19:09:13,973 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 19:09:13,973 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 19:09:13,973 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 19:09:13,974 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 19:09:13,974 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 19:09:13,974 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 19:09:13,974 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 19:09:13,976 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 19:09:13,977 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 19:09:13,977 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 19:09:13,977 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 19:09:13,977 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 19:09:13,978 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 19:09:13,978 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 19:09:13,980 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 19:09:13,981 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 19:09:13,981 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-20 19:09:13,981 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 19:09:13,981 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 19:09:13,981 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 19:09:13,982 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 19:09:13,982 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 19:09:13,982 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 19:09:13,982 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 19:09:13,982 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 19:09:13,982 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 19:09:13,982 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 19:09:13,983 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 19:09:13,983 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 19:09:13,983 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 19:09:13,983 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 19:09:13,983 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 19:09:13,984 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 19:09:13,984 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 19:09:13,984 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 19:09:13,984 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 35431d6758accd7fd2ee5ddf2b1a76a0fd5efeada0a27759fb5cb6b7d4ed3c08 [2024-11-20 19:09:14,196 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 19:09:14,215 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 19:09:14,218 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 19:09:14,218 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 19:09:14,219 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 19:09:14,220 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_ps4-ll.c [2024-11-20 19:09:15,464 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 19:09:15,636 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 19:09:15,636 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_ps4-ll.c [2024-11-20 19:09:15,649 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5aff48ac4/117f753b51c84041ba80e034e2677f9b/FLAG77b68e5c3 [2024-11-20 19:09:16,048 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5aff48ac4/117f753b51c84041ba80e034e2677f9b [2024-11-20 19:09:16,050 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 19:09:16,051 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 19:09:16,052 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 19:09:16,052 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 19:09:16,061 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 19:09:16,062 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:09:16" (1/1) ... [2024-11-20 19:09:16,062 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@459623c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:16, skipping insertion in model container [2024-11-20 19:09:16,062 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:09:16" (1/1) ... [2024-11-20 19:09:16,084 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 19:09:16,250 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 19:09:16,265 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 19:09:16,290 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 19:09:16,304 INFO L204 MainTranslator]: Completed translation [2024-11-20 19:09:16,305 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:16 WrapperNode [2024-11-20 19:09:16,305 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 19:09:16,306 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 19:09:16,306 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 19:09:16,307 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 19:09:16,312 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:16" (1/1) ... [2024-11-20 19:09:16,321 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:16" (1/1) ... [2024-11-20 19:09:16,337 INFO L138 Inliner]: procedures = 16, calls = 64, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 103 [2024-11-20 19:09:16,337 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 19:09:16,338 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 19:09:16,338 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 19:09:16,338 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 19:09:16,347 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:16" (1/1) ... [2024-11-20 19:09:16,347 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:16" (1/1) ... [2024-11-20 19:09:16,350 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:16" (1/1) ... [2024-11-20 19:09:16,369 INFO L175 MemorySlicer]: Split 41 memory accesses to 5 slices as follows [2, 3, 27, 5, 4]. 66 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 7 writes are split as follows [0, 1, 2, 2, 2]. [2024-11-20 19:09:16,370 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:16" (1/1) ... [2024-11-20 19:09:16,370 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:16" (1/1) ... [2024-11-20 19:09:16,377 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:16" (1/1) ... [2024-11-20 19:09:16,379 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:16" (1/1) ... [2024-11-20 19:09:16,382 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:16" (1/1) ... [2024-11-20 19:09:16,383 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:16" (1/1) ... [2024-11-20 19:09:16,389 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 19:09:16,392 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 19:09:16,392 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 19:09:16,392 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 19:09:16,393 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:16" (1/1) ... [2024-11-20 19:09:16,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 19:09:16,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:09:16,421 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-20 19:09:16,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-20 19:09:16,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 19:09:16,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 19:09:16,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-20 19:09:16,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-20 19:09:16,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-20 19:09:16,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-20 19:09:16,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-20 19:09:16,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-20 19:09:16,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-20 19:09:16,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-20 19:09:16,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-20 19:09:16,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-20 19:09:16,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 19:09:16,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 19:09:16,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-20 19:09:16,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-20 19:09:16,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-20 19:09:16,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-20 19:09:16,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-20 19:09:16,466 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_26_to_34_0 [2024-11-20 19:09:16,466 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_26_to_34_0 [2024-11-20 19:09:16,467 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-20 19:09:16,467 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-20 19:09:16,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-20 19:09:16,555 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 19:09:16,558 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 19:09:17,027 INFO L? ?]: Removed 209 outVars from TransFormulas that were not future-live. [2024-11-20 19:09:17,027 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 19:09:17,039 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 19:09:17,039 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-20 19:09:17,040 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:09:17 BoogieIcfgContainer [2024-11-20 19:09:17,040 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 19:09:17,043 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 19:09:17,044 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 19:09:17,049 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 19:09:17,050 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:09:16" (1/3) ... [2024-11-20 19:09:17,050 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b59d732 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:09:17, skipping insertion in model container [2024-11-20 19:09:17,050 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:16" (2/3) ... [2024-11-20 19:09:17,051 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b59d732 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:09:17, skipping insertion in model container [2024-11-20 19:09:17,051 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:09:17" (3/3) ... [2024-11-20 19:09:17,053 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_ps4-ll.c [2024-11-20 19:09:17,066 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 19:09:17,067 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 60 error locations. [2024-11-20 19:09:17,131 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 19:09:17,136 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;@2fee8c50, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 19:09:17,137 INFO L334 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2024-11-20 19:09:17,140 INFO L276 IsEmpty]: Start isEmpty. Operand has 145 states, 77 states have (on average 1.8181818181818181) internal successors, (140), 138 states have internal predecessors, (140), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 19:09:17,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-20 19:09:17,145 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:17,146 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-20 19:09:17,146 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_26_to_34_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-20 19:09:17,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:17,150 INFO L85 PathProgramCache]: Analyzing trace with hash 894155113, now seen corresponding path program 1 times [2024-11-20 19:09:17,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:17,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283407444] [2024-11-20 19:09:17,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:17,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:17,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:17,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:17,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:17,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283407444] [2024-11-20 19:09:17,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283407444] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:17,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:17,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 19:09:17,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948555551] [2024-11-20 19:09:17,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:17,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 19:09:17,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:17,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 19:09:17,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 19:09:17,637 INFO L87 Difference]: Start difference. First operand has 145 states, 77 states have (on average 1.8181818181818181) internal successors, (140), 138 states have internal predecessors, (140), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:09:17,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:17,818 INFO L93 Difference]: Finished difference Result 370 states and 392 transitions. [2024-11-20 19:09:17,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 19:09:17,820 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 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 6 [2024-11-20 19:09:17,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:17,827 INFO L225 Difference]: With dead ends: 370 [2024-11-20 19:09:17,828 INFO L226 Difference]: Without dead ends: 222 [2024-11-20 19:09:17,831 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-20 19:09:17,834 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 182 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:17,835 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 642 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 19:09:17,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-11-20 19:09:17,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 167. [2024-11-20 19:09:17,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 99 states have (on average 1.8181818181818181) internal successors, (180), 159 states have internal predecessors, (180), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-20 19:09:17,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 191 transitions. [2024-11-20 19:09:17,871 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 191 transitions. Word has length 6 [2024-11-20 19:09:17,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:17,871 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 191 transitions. [2024-11-20 19:09:17,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:09:17,872 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 191 transitions. [2024-11-20 19:09:17,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-20 19:09:17,872 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:17,872 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:17,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 19:09:17,872 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_26_to_34_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-20 19:09:17,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:17,873 INFO L85 PathProgramCache]: Analyzing trace with hash 289607755, now seen corresponding path program 1 times [2024-11-20 19:09:17,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:17,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035377917] [2024-11-20 19:09:17,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:17,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:17,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:09:17,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [799415204] [2024-11-20 19:09:17,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:17,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:17,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:09:17,905 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:09:17,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 19:09:17,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:17,981 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-20 19:09:17,987 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:09:18,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:09:18,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:18,078 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:09:18,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:18,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035377917] [2024-11-20 19:09:18,080 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:09:18,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799415204] [2024-11-20 19:09:18,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799415204] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:18,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:18,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 19:09:18,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144337669] [2024-11-20 19:09:18,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:18,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 19:09:18,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:18,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 19:09:18,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 19:09:18,085 INFO L87 Difference]: Start difference. First operand 167 states and 191 transitions. Second operand has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:09:18,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:18,294 INFO L93 Difference]: Finished difference Result 246 states and 251 transitions. [2024-11-20 19:09:18,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 19:09:18,295 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-20 19:09:18,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:18,296 INFO L225 Difference]: With dead ends: 246 [2024-11-20 19:09:18,296 INFO L226 Difference]: Without dead ends: 240 [2024-11-20 19:09:18,297 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-20 19:09:18,298 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 172 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:18,298 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 534 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 19:09:18,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-11-20 19:09:18,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 167. [2024-11-20 19:09:18,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 99 states have (on average 1.7575757575757576) internal successors, (174), 159 states have internal predecessors, (174), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-20 19:09:18,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 185 transitions. [2024-11-20 19:09:18,318 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 185 transitions. Word has length 8 [2024-11-20 19:09:18,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:18,319 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 185 transitions. [2024-11-20 19:09:18,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:09:18,320 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 185 transitions. [2024-11-20 19:09:18,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-20 19:09:18,321 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:18,321 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:18,329 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-20 19:09:18,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:18,522 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_26_to_34_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-20 19:09:18,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:18,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1987835121, now seen corresponding path program 1 times [2024-11-20 19:09:18,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:18,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393413908] [2024-11-20 19:09:18,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:18,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:18,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:18,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:18,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:18,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393413908] [2024-11-20 19:09:18,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393413908] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:18,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:18,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 19:09:18,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557680052] [2024-11-20 19:09:18,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:18,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 19:09:18,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:18,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 19:09:18,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-20 19:09:18,729 INFO L87 Difference]: Start difference. First operand 167 states and 185 transitions. Second operand has 7 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:09:18,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:18,886 INFO L93 Difference]: Finished difference Result 216 states and 221 transitions. [2024-11-20 19:09:18,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 19:09:18,886 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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 14 [2024-11-20 19:09:18,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:18,887 INFO L225 Difference]: With dead ends: 216 [2024-11-20 19:09:18,887 INFO L226 Difference]: Without dead ends: 215 [2024-11-20 19:09:18,888 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-20 19:09:18,889 INFO L432 NwaCegarLoop]: 121 mSDtfsCounter, 176 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:18,889 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 611 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 19:09:18,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2024-11-20 19:09:18,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 167. [2024-11-20 19:09:18,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 99 states have (on average 1.7474747474747474) internal successors, (173), 159 states have internal predecessors, (173), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-20 19:09:18,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 184 transitions. [2024-11-20 19:09:18,904 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 184 transitions. Word has length 14 [2024-11-20 19:09:18,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:18,904 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 184 transitions. [2024-11-20 19:09:18,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:09:18,905 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 184 transitions. [2024-11-20 19:09:18,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-20 19:09:18,905 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:18,905 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:18,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 19:09:18,905 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_26_to_34_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-20 19:09:18,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:18,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1493346728, now seen corresponding path program 1 times [2024-11-20 19:09:18,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:18,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59636819] [2024-11-20 19:09:18,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:18,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:18,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:09:18,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [166248947] [2024-11-20 19:09:18,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:18,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:18,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:09:18,924 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:09:18,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 19:09:18,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:18,976 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-20 19:09:18,977 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:09:18,981 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:09:19,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:19,037 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:09:19,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:19,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59636819] [2024-11-20 19:09:19,037 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:09:19,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166248947] [2024-11-20 19:09:19,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166248947] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:19,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:19,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 19:09:19,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633420013] [2024-11-20 19:09:19,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:19,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 19:09:19,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:19,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 19:09:19,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 19:09:19,039 INFO L87 Difference]: Start difference. First operand 167 states and 184 transitions. Second operand has 6 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:09:19,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:19,227 INFO L93 Difference]: Finished difference Result 239 states and 244 transitions. [2024-11-20 19:09:19,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 19:09:19,227 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), 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 15 [2024-11-20 19:09:19,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:19,228 INFO L225 Difference]: With dead ends: 239 [2024-11-20 19:09:19,228 INFO L226 Difference]: Without dead ends: 238 [2024-11-20 19:09:19,228 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-20 19:09:19,229 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 161 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:19,229 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 534 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 19:09:19,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-11-20 19:09:19,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 167. [2024-11-20 19:09:19,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 99 states have (on average 1.7373737373737375) internal successors, (172), 159 states have internal predecessors, (172), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-20 19:09:19,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 183 transitions. [2024-11-20 19:09:19,238 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 183 transitions. Word has length 15 [2024-11-20 19:09:19,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:19,238 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 183 transitions. [2024-11-20 19:09:19,238 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:09:19,238 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 183 transitions. [2024-11-20 19:09:19,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-20 19:09:19,238 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:19,239 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:19,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-20 19:09:19,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-20 19:09:19,443 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_26_to_34_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-20 19:09:19,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:19,443 INFO L85 PathProgramCache]: Analyzing trace with hash -950891565, now seen corresponding path program 1 times [2024-11-20 19:09:19,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:19,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289805616] [2024-11-20 19:09:19,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:19,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:19,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:19,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:19,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:19,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289805616] [2024-11-20 19:09:19,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289805616] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:19,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:19,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 19:09:19,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689056743] [2024-11-20 19:09:19,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:19,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 19:09:19,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:19,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 19:09:19,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 19:09:19,553 INFO L87 Difference]: Start difference. First operand 167 states and 183 transitions. Second operand has 6 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:09:19,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:19,679 INFO L93 Difference]: Finished difference Result 238 states and 243 transitions. [2024-11-20 19:09:19,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 19:09:19,680 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 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 16 [2024-11-20 19:09:19,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:19,681 INFO L225 Difference]: With dead ends: 238 [2024-11-20 19:09:19,681 INFO L226 Difference]: Without dead ends: 232 [2024-11-20 19:09:19,681 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-20 19:09:19,682 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 134 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:19,682 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 541 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 19:09:19,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-11-20 19:09:19,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 167. [2024-11-20 19:09:19,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 99 states have (on average 1.6767676767676767) internal successors, (166), 159 states have internal predecessors, (166), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-20 19:09:19,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 177 transitions. [2024-11-20 19:09:19,691 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 177 transitions. Word has length 16 [2024-11-20 19:09:19,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:19,691 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 177 transitions. [2024-11-20 19:09:19,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:09:19,692 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 177 transitions. [2024-11-20 19:09:19,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-20 19:09:19,692 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:19,692 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:19,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 19:09:19,693 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_26_to_34_0Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-20 19:09:19,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:19,693 INFO L85 PathProgramCache]: Analyzing trace with hash -95866759, now seen corresponding path program 1 times [2024-11-20 19:09:19,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:19,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749176137] [2024-11-20 19:09:19,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:19,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:19,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:09:19,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [817673145] [2024-11-20 19:09:19,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:19,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:19,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:09:19,716 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:09:19,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 19:09:19,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:19,775 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-20 19:09:19,777 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:09:19,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:09:19,790 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:09:19,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:19,963 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:09:19,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:19,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749176137] [2024-11-20 19:09:19,963 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:09:19,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817673145] [2024-11-20 19:09:19,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817673145] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:19,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:19,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 19:09:19,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563470233] [2024-11-20 19:09:19,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:19,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 19:09:19,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:19,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 19:09:19,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-20 19:09:19,965 INFO L87 Difference]: Start difference. First operand 167 states and 177 transitions. Second operand has 8 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:09:20,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:20,202 INFO L93 Difference]: Finished difference Result 196 states and 201 transitions. [2024-11-20 19:09:20,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 19:09:20,203 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 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 22 [2024-11-20 19:09:20,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:20,204 INFO L225 Difference]: With dead ends: 196 [2024-11-20 19:09:20,204 INFO L226 Difference]: Without dead ends: 194 [2024-11-20 19:09:20,204 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-20 19:09:20,205 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 109 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:20,205 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 727 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 19:09:20,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-11-20 19:09:20,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 167. [2024-11-20 19:09:20,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 99 states have (on average 1.6565656565656566) internal successors, (164), 159 states have internal predecessors, (164), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-20 19:09:20,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 175 transitions. [2024-11-20 19:09:20,211 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 175 transitions. Word has length 22 [2024-11-20 19:09:20,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:20,211 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 175 transitions. [2024-11-20 19:09:20,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:09:20,211 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 175 transitions. [2024-11-20 19:09:20,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-20 19:09:20,212 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:20,212 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:20,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-20 19:09:20,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:20,412 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_26_to_34_0Err18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-20 19:09:20,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:20,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1933637797, now seen corresponding path program 1 times [2024-11-20 19:09:20,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:20,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586697337] [2024-11-20 19:09:20,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:20,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:20,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:09:20,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1936989242] [2024-11-20 19:09:20,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:20,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:20,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:09:20,429 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:09:20,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-20 19:09:20,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:20,490 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-20 19:09:20,492 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:09:20,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:09:20,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:20,549 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:09:20,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:20,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586697337] [2024-11-20 19:09:20,550 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:09:20,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936989242] [2024-11-20 19:09:20,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936989242] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:20,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:20,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 19:09:20,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901822145] [2024-11-20 19:09:20,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:20,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 19:09:20,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:20,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 19:09:20,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 19:09:20,552 INFO L87 Difference]: Start difference. First operand 167 states and 175 transitions. Second operand has 6 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:09:20,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:20,693 INFO L93 Difference]: Finished difference Result 230 states and 235 transitions. [2024-11-20 19:09:20,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 19:09:20,694 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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 24 [2024-11-20 19:09:20,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:20,695 INFO L225 Difference]: With dead ends: 230 [2024-11-20 19:09:20,695 INFO L226 Difference]: Without dead ends: 228 [2024-11-20 19:09:20,695 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-20 19:09:20,696 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 108 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:20,696 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 560 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 19:09:20,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-11-20 19:09:20,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 167. [2024-11-20 19:09:20,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 99 states have (on average 1.6363636363636365) internal successors, (162), 159 states have internal predecessors, (162), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-20 19:09:20,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 173 transitions. [2024-11-20 19:09:20,702 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 173 transitions. Word has length 24 [2024-11-20 19:09:20,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:20,702 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 173 transitions. [2024-11-20 19:09:20,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:09:20,702 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 173 transitions. [2024-11-20 19:09:20,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-20 19:09:20,703 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:20,703 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:20,711 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-20 19:09:20,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:20,908 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_26_to_34_0Err20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-20 19:09:20,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:20,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1494920765, now seen corresponding path program 1 times [2024-11-20 19:09:20,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:20,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141975990] [2024-11-20 19:09:20,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:20,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:20,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:09:20,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2129970082] [2024-11-20 19:09:20,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:20,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:20,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:09:20,934 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:09:20,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-20 19:09:20,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:21,003 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-20 19:09:21,005 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:09:21,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:09:21,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:09:21,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:21,244 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:09:21,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:21,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141975990] [2024-11-20 19:09:21,244 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:09:21,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129970082] [2024-11-20 19:09:21,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129970082] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:21,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:21,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-20 19:09:21,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634099133] [2024-11-20 19:09:21,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:21,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-20 19:09:21,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:21,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-20 19:09:21,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-20 19:09:21,245 INFO L87 Difference]: Start difference. First operand 167 states and 173 transitions. Second operand has 9 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:09:21,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:21,545 INFO L93 Difference]: Finished difference Result 192 states and 197 transitions. [2024-11-20 19:09:21,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 19:09:21,546 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 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 26 [2024-11-20 19:09:21,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:21,547 INFO L225 Difference]: With dead ends: 192 [2024-11-20 19:09:21,547 INFO L226 Difference]: Without dead ends: 191 [2024-11-20 19:09:21,547 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2024-11-20 19:09:21,547 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 105 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:21,548 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 619 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 19:09:21,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-11-20 19:09:21,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 167. [2024-11-20 19:09:21,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 99 states have (on average 1.6262626262626263) internal successors, (161), 159 states have internal predecessors, (161), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-20 19:09:21,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 172 transitions. [2024-11-20 19:09:21,553 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 172 transitions. Word has length 26 [2024-11-20 19:09:21,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:21,554 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 172 transitions. [2024-11-20 19:09:21,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:09:21,554 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 172 transitions. [2024-11-20 19:09:21,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-20 19:09:21,555 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:21,555 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:21,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-20 19:09:21,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:21,760 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_26_to_34_0Err21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-20 19:09:21,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:21,760 INFO L85 PathProgramCache]: Analyzing trace with hash -902096396, now seen corresponding path program 1 times [2024-11-20 19:09:21,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:21,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022167078] [2024-11-20 19:09:21,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:21,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:21,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:09:21,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [707731537] [2024-11-20 19:09:21,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:21,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:21,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:09:21,777 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:09:21,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-20 19:09:21,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:21,837 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-20 19:09:21,839 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:09:21,846 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:09:21,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:09:22,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:22,062 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:09:22,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:22,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022167078] [2024-11-20 19:09:22,062 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:09:22,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707731537] [2024-11-20 19:09:22,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707731537] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:22,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:22,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-20 19:09:22,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308273126] [2024-11-20 19:09:22,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:22,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-20 19:09:22,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:22,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-20 19:09:22,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-20 19:09:22,065 INFO L87 Difference]: Start difference. First operand 167 states and 172 transitions. Second operand has 9 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:09:22,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:22,520 INFO L93 Difference]: Finished difference Result 191 states and 196 transitions. [2024-11-20 19:09:22,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 19:09:22,520 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 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 27 [2024-11-20 19:09:22,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:22,521 INFO L225 Difference]: With dead ends: 191 [2024-11-20 19:09:22,521 INFO L226 Difference]: Without dead ends: 190 [2024-11-20 19:09:22,522 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2024-11-20 19:09:22,522 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 98 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:22,522 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 709 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-20 19:09:22,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-11-20 19:09:22,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 167. [2024-11-20 19:09:22,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 99 states have (on average 1.6161616161616161) internal successors, (160), 159 states have internal predecessors, (160), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-20 19:09:22,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 171 transitions. [2024-11-20 19:09:22,527 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 171 transitions. Word has length 27 [2024-11-20 19:09:22,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:22,528 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 171 transitions. [2024-11-20 19:09:22,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:09:22,528 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 171 transitions. [2024-11-20 19:09:22,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-20 19:09:22,529 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:22,529 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:22,537 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-20 19:09:22,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:22,730 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_26_to_34_0Err22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-20 19:09:22,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:22,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1528431989, now seen corresponding path program 1 times [2024-11-20 19:09:22,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:22,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145980197] [2024-11-20 19:09:22,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:22,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:22,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:22,920 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-20 19:09:22,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:22,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:22,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:22,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145980197] [2024-11-20 19:09:22,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145980197] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:22,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:22,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 19:09:22,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518938425] [2024-11-20 19:09:22,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:22,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 19:09:22,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:22,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 19:09:22,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-20 19:09:22,928 INFO L87 Difference]: Start difference. First operand 167 states and 171 transitions. Second operand has 7 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 19:09:23,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:23,000 INFO L93 Difference]: Finished difference Result 230 states and 234 transitions. [2024-11-20 19:09:23,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 19:09:23,001 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 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 35 [2024-11-20 19:09:23,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:23,002 INFO L225 Difference]: With dead ends: 230 [2024-11-20 19:09:23,002 INFO L226 Difference]: Without dead ends: 229 [2024-11-20 19:09:23,002 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-20 19:09:23,003 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 93 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:23,003 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 775 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 19:09:23,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2024-11-20 19:09:23,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 168. [2024-11-20 19:09:23,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 100 states have (on average 1.61) internal successors, (161), 160 states have internal predecessors, (161), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-20 19:09:23,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 172 transitions. [2024-11-20 19:09:23,009 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 172 transitions. Word has length 35 [2024-11-20 19:09:23,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:23,011 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 172 transitions. [2024-11-20 19:09:23,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 19:09:23,011 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 172 transitions. [2024-11-20 19:09:23,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-20 19:09:23,012 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:23,012 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:23,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-20 19:09:23,013 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_26_to_34_0Err23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-20 19:09:23,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:23,013 INFO L85 PathProgramCache]: Analyzing trace with hash 136751558, now seen corresponding path program 1 times [2024-11-20 19:09:23,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:23,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332832630] [2024-11-20 19:09:23,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:23,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:23,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:23,183 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-20 19:09:23,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:23,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:23,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:23,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332832630] [2024-11-20 19:09:23,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332832630] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:23,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:23,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 19:09:23,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186654444] [2024-11-20 19:09:23,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:23,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 19:09:23,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:23,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 19:09:23,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-20 19:09:23,188 INFO L87 Difference]: Start difference. First operand 168 states and 172 transitions. Second operand has 7 states, 5 states have (on average 6.6) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 19:09:23,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:23,274 INFO L93 Difference]: Finished difference Result 229 states and 233 transitions. [2024-11-20 19:09:23,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 19:09:23,275 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 6.6) internal successors, (33), 6 states have internal predecessors, (33), 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 36 [2024-11-20 19:09:23,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:23,276 INFO L225 Difference]: With dead ends: 229 [2024-11-20 19:09:23,276 INFO L226 Difference]: Without dead ends: 228 [2024-11-20 19:09:23,276 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-20 19:09:23,277 INFO L432 NwaCegarLoop]: 133 mSDtfsCounter, 90 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:23,277 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 675 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 19:09:23,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-11-20 19:09:23,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 169. [2024-11-20 19:09:23,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 101 states have (on average 1.603960396039604) internal successors, (162), 161 states have internal predecessors, (162), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-20 19:09:23,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 173 transitions. [2024-11-20 19:09:23,283 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 173 transitions. Word has length 36 [2024-11-20 19:09:23,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:23,283 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 173 transitions. [2024-11-20 19:09:23,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 6.6) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 19:09:23,283 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 173 transitions. [2024-11-20 19:09:23,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-20 19:09:23,284 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:23,284 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:23,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-20 19:09:23,285 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_26_to_34_0Err24ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-20 19:09:23,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:23,285 INFO L85 PathProgramCache]: Analyzing trace with hash -55668841, now seen corresponding path program 1 times [2024-11-20 19:09:23,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:23,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296889250] [2024-11-20 19:09:23,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:23,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:23,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:23,402 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-20 19:09:23,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:23,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:23,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:23,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296889250] [2024-11-20 19:09:23,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296889250] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:23,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:23,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 19:09:23,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973000170] [2024-11-20 19:09:23,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:23,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 19:09:23,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:23,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 19:09:23,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 19:09:23,407 INFO L87 Difference]: Start difference. First operand 169 states and 173 transitions. Second operand has 6 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 19:09:23,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:23,499 INFO L93 Difference]: Finished difference Result 224 states and 229 transitions. [2024-11-20 19:09:23,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 19:09:23,500 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 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 37 [2024-11-20 19:09:23,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:23,501 INFO L225 Difference]: With dead ends: 224 [2024-11-20 19:09:23,501 INFO L226 Difference]: Without dead ends: 222 [2024-11-20 19:09:23,501 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-20 19:09:23,501 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 85 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:23,502 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 576 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 19:09:23,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-11-20 19:09:23,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 171. [2024-11-20 19:09:23,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 103 states have (on average 1.5922330097087378) internal successors, (164), 163 states have internal predecessors, (164), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-20 19:09:23,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 175 transitions. [2024-11-20 19:09:23,506 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 175 transitions. Word has length 37 [2024-11-20 19:09:23,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:23,506 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 175 transitions. [2024-11-20 19:09:23,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 19:09:23,507 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 175 transitions. [2024-11-20 19:09:23,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-20 19:09:23,507 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:23,507 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:23,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-20 19:09:23,508 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-20 19:09:23,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:23,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1725942541, now seen corresponding path program 1 times [2024-11-20 19:09:23,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:23,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20119331] [2024-11-20 19:09:23,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:23,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:23,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:09:23,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [478175234] [2024-11-20 19:09:23,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:23,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:23,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:09:23,524 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:09:23,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-20 19:09:23,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:23,595 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-20 19:09:23,597 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:09:23,608 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 19:09:23,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:09:23,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 19:09:23,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-20 19:09:23,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-20 19:09:24,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:24,004 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:09:24,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:24,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20119331] [2024-11-20 19:09:24,004 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:09:24,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478175234] [2024-11-20 19:09:24,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478175234] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:24,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:24,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-20 19:09:24,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152357217] [2024-11-20 19:09:24,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:24,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-20 19:09:24,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:24,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-20 19:09:24,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-20 19:09:24,006 INFO L87 Difference]: Start difference. First operand 171 states and 175 transitions. Second operand has 9 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:09:24,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:24,227 INFO L93 Difference]: Finished difference Result 224 states and 229 transitions. [2024-11-20 19:09:24,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 19:09:24,227 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2024-11-20 19:09:24,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:24,230 INFO L225 Difference]: With dead ends: 224 [2024-11-20 19:09:24,230 INFO L226 Difference]: Without dead ends: 223 [2024-11-20 19:09:24,230 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-11-20 19:09:24,231 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 88 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:24,231 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 733 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 19:09:24,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2024-11-20 19:09:24,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 175. [2024-11-20 19:09:24,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 106 states have (on average 1.5754716981132075) internal successors, (167), 165 states have internal predecessors, (167), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-20 19:09:24,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 179 transitions. [2024-11-20 19:09:24,237 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 179 transitions. Word has length 38 [2024-11-20 19:09:24,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:24,237 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 179 transitions. [2024-11-20 19:09:24,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:09:24,237 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 179 transitions. [2024-11-20 19:09:24,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-20 19:09:24,238 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:24,238 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:24,246 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-20 19:09:24,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:24,439 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-20 19:09:24,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:24,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1964611181, now seen corresponding path program 1 times [2024-11-20 19:09:24,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:24,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786615070] [2024-11-20 19:09:24,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:24,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:24,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:09:24,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1354462042] [2024-11-20 19:09:24,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:24,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:24,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:09:24,455 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:09:24,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-20 19:09:24,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:24,522 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-20 19:09:24,526 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:09:24,530 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 11 treesize of output 7 [2024-11-20 19:09:24,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:24,573 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:09:24,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:24,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786615070] [2024-11-20 19:09:24,573 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:09:24,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354462042] [2024-11-20 19:09:24,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354462042] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:24,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:24,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 19:09:24,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128552482] [2024-11-20 19:09:24,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:24,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 19:09:24,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:24,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 19:09:24,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 19:09:24,575 INFO L87 Difference]: Start difference. First operand 175 states and 179 transitions. Second operand has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:09:24,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:24,690 INFO L93 Difference]: Finished difference Result 223 states and 228 transitions. [2024-11-20 19:09:24,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 19:09:24,690 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 39 [2024-11-20 19:09:24,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:24,692 INFO L225 Difference]: With dead ends: 223 [2024-11-20 19:09:24,692 INFO L226 Difference]: Without dead ends: 222 [2024-11-20 19:09:24,692 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-20 19:09:24,693 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 87 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:24,693 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 384 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 19:09:24,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-11-20 19:09:24,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 176. [2024-11-20 19:09:24,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 107 states have (on average 1.5700934579439252) internal successors, (168), 166 states have internal predecessors, (168), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-20 19:09:24,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 180 transitions. [2024-11-20 19:09:24,698 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 180 transitions. Word has length 39 [2024-11-20 19:09:24,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:24,698 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 180 transitions. [2024-11-20 19:09:24,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:09:24,698 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 180 transitions. [2024-11-20 19:09:24,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-20 19:09:24,699 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:24,699 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:24,705 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-20 19:09:24,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-20 19:09:24,900 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting func_to_recursive_line_26_to_34_0Err26ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-20 19:09:24,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:24,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1958143559, now seen corresponding path program 1 times [2024-11-20 19:09:24,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:24,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552442226] [2024-11-20 19:09:24,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:24,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:24,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:09:24,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1369733458] [2024-11-20 19:09:24,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:24,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:24,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:09:24,920 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:09:24,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-20 19:09:24,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:24,994 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-20 19:09:24,996 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:09:25,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 19:09:25,114 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 [2024-11-20 19:09:25,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-20 19:09:25,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:25,130 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:09:25,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:25,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552442226] [2024-11-20 19:09:25,130 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:09:25,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369733458] [2024-11-20 19:09:25,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369733458] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:25,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:25,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 19:09:25,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111988963] [2024-11-20 19:09:25,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:25,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 19:09:25,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:25,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 19:09:25,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-20 19:09:25,131 INFO L87 Difference]: Start difference. First operand 176 states and 180 transitions. Second operand has 8 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 19:09:25,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:25,292 INFO L93 Difference]: Finished difference Result 224 states and 230 transitions. [2024-11-20 19:09:25,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 19:09:25,292 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 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 39 [2024-11-20 19:09:25,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:25,293 INFO L225 Difference]: With dead ends: 224 [2024-11-20 19:09:25,293 INFO L226 Difference]: Without dead ends: 222 [2024-11-20 19:09:25,293 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-20 19:09:25,294 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 308 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:25,294 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 449 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 19:09:25,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-11-20 19:09:25,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 174. [2024-11-20 19:09:25,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 107 states have (on average 1.5514018691588785) internal successors, (166), 164 states have internal predecessors, (166), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-20 19:09:25,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 178 transitions. [2024-11-20 19:09:25,315 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 178 transitions. Word has length 39 [2024-11-20 19:09:25,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:25,315 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 178 transitions. [2024-11-20 19:09:25,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 19:09:25,315 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 178 transitions. [2024-11-20 19:09:25,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-20 19:09:25,316 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:25,316 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:25,322 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-20 19:09:25,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-20 19:09:25,517 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-20 19:09:25,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:25,517 INFO L85 PathProgramCache]: Analyzing trace with hash -773404427, now seen corresponding path program 1 times [2024-11-20 19:09:25,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:25,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959323477] [2024-11-20 19:09:25,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:25,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:25,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:09:25,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2048781831] [2024-11-20 19:09:25,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:25,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:25,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:09:25,532 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:09:25,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-20 19:09:25,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:25,606 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-20 19:09:25,608 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:09:25,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:09:25,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:25,661 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:09:25,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:25,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959323477] [2024-11-20 19:09:25,663 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:09:25,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048781831] [2024-11-20 19:09:25,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048781831] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:25,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:25,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 19:09:25,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221198870] [2024-11-20 19:09:25,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:25,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 19:09:25,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:25,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 19:09:25,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 19:09:25,665 INFO L87 Difference]: Start difference. First operand 174 states and 178 transitions. Second operand has 5 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:09:25,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:25,764 INFO L93 Difference]: Finished difference Result 220 states and 225 transitions. [2024-11-20 19:09:25,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 19:09:25,765 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 40 [2024-11-20 19:09:25,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:25,765 INFO L225 Difference]: With dead ends: 220 [2024-11-20 19:09:25,766 INFO L226 Difference]: Without dead ends: 218 [2024-11-20 19:09:25,766 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-20 19:09:25,766 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 79 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:25,767 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 374 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 19:09:25,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2024-11-20 19:09:25,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 176. [2024-11-20 19:09:25,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 109 states have (on average 1.5412844036697249) internal successors, (168), 166 states have internal predecessors, (168), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-20 19:09:25,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 180 transitions. [2024-11-20 19:09:25,772 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 180 transitions. Word has length 40 [2024-11-20 19:09:25,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:25,772 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 180 transitions. [2024-11-20 19:09:25,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:09:25,772 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 180 transitions. [2024-11-20 19:09:25,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-20 19:09:25,773 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:25,773 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:25,780 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-20 19:09:25,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-20 19:09:25,974 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting func_to_recursive_line_26_to_34_0Err27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-20 19:09:25,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:25,974 INFO L85 PathProgramCache]: Analyzing trace with hash -572908022, now seen corresponding path program 1 times [2024-11-20 19:09:25,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:25,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497148601] [2024-11-20 19:09:25,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:25,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:25,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:09:25,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1454754749] [2024-11-20 19:09:25,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:25,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:25,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:09:25,990 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:09:25,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-20 19:09:26,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:26,062 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-20 19:09:26,064 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:09:26,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:09:26,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:26,151 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:09:26,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:26,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497148601] [2024-11-20 19:09:26,151 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:09:26,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454754749] [2024-11-20 19:09:26,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454754749] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:26,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:26,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 19:09:26,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924985953] [2024-11-20 19:09:26,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:26,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 19:09:26,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:26,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 19:09:26,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-20 19:09:26,152 INFO L87 Difference]: Start difference. First operand 176 states and 180 transitions. Second operand has 8 states, 6 states have (on average 6.166666666666667) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 19:09:26,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:26,294 INFO L93 Difference]: Finished difference Result 237 states and 244 transitions. [2024-11-20 19:09:26,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 19:09:26,294 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 6.166666666666667) internal successors, (37), 7 states have internal predecessors, (37), 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 40 [2024-11-20 19:09:26,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:26,295 INFO L225 Difference]: With dead ends: 237 [2024-11-20 19:09:26,295 INFO L226 Difference]: Without dead ends: 236 [2024-11-20 19:09:26,295 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-20 19:09:26,296 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 136 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:26,296 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 574 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 19:09:26,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2024-11-20 19:09:26,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 185. [2024-11-20 19:09:26,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 116 states have (on average 1.5258620689655173) internal successors, (177), 174 states have internal predecessors, (177), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-20 19:09:26,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 191 transitions. [2024-11-20 19:09:26,301 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 191 transitions. Word has length 40 [2024-11-20 19:09:26,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:26,301 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 191 transitions. [2024-11-20 19:09:26,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 6.166666666666667) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 19:09:26,302 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 191 transitions. [2024-11-20 19:09:26,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-20 19:09:26,302 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:26,302 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:26,309 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-20 19:09:26,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-20 19:09:26,507 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting func_to_recursive_line_26_to_34_0Err28ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-20 19:09:26,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:26,507 INFO L85 PathProgramCache]: Analyzing trace with hash -580279333, now seen corresponding path program 1 times [2024-11-20 19:09:26,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:26,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870652255] [2024-11-20 19:09:26,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:26,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:26,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:09:26,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1438500792] [2024-11-20 19:09:26,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:26,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:26,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:09:26,526 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:09:26,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-20 19:09:26,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:26,603 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-20 19:09:26,605 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:09:26,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 19:09:26,699 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 [2024-11-20 19:09:26,729 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 13 [2024-11-20 19:09:26,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:26,742 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:09:26,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:26,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870652255] [2024-11-20 19:09:26,742 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:09:26,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438500792] [2024-11-20 19:09:26,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438500792] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:26,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:26,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-20 19:09:26,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206631951] [2024-11-20 19:09:26,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:26,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-20 19:09:26,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:26,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-20 19:09:26,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-20 19:09:26,743 INFO L87 Difference]: Start difference. First operand 185 states and 191 transitions. Second operand has 9 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 19:09:26,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:26,887 INFO L93 Difference]: Finished difference Result 226 states and 231 transitions. [2024-11-20 19:09:26,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 19:09:26,887 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 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 41 [2024-11-20 19:09:26,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:26,888 INFO L225 Difference]: With dead ends: 226 [2024-11-20 19:09:26,888 INFO L226 Difference]: Without dead ends: 225 [2024-11-20 19:09:26,889 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2024-11-20 19:09:26,889 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 218 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:26,889 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 497 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 19:09:26,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2024-11-20 19:09:26,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 184. [2024-11-20 19:09:26,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 116 states have (on average 1.5172413793103448) internal successors, (176), 173 states have internal predecessors, (176), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-20 19:09:26,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 190 transitions. [2024-11-20 19:09:26,895 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 190 transitions. Word has length 41 [2024-11-20 19:09:26,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:26,895 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 190 transitions. [2024-11-20 19:09:26,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 19:09:26,895 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 190 transitions. [2024-11-20 19:09:26,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-20 19:09:26,896 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:26,896 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:26,913 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-20 19:09:27,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-20 19:09:27,106 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-20 19:09:27,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:27,107 INFO L85 PathProgramCache]: Analyzing trace with hash -212310793, now seen corresponding path program 1 times [2024-11-20 19:09:27,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:27,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867181238] [2024-11-20 19:09:27,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:27,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:27,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:09:27,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [244267086] [2024-11-20 19:09:27,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:27,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:27,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:09:27,120 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:09:27,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-20 19:09:27,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:27,214 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-20 19:09:27,215 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:09:27,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:09:27,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:27,278 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:09:27,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:27,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867181238] [2024-11-20 19:09:27,278 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:09:27,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244267086] [2024-11-20 19:09:27,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244267086] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:27,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:27,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 19:09:27,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996173655] [2024-11-20 19:09:27,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:27,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 19:09:27,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:27,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 19:09:27,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 19:09:27,279 INFO L87 Difference]: Start difference. First operand 184 states and 190 transitions. Second operand has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:09:27,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:27,409 INFO L93 Difference]: Finished difference Result 223 states and 227 transitions. [2024-11-20 19:09:27,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 19:09:27,409 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2024-11-20 19:09:27,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:27,413 INFO L225 Difference]: With dead ends: 223 [2024-11-20 19:09:27,413 INFO L226 Difference]: Without dead ends: 221 [2024-11-20 19:09:27,413 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-20 19:09:27,414 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 75 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:27,414 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 468 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 19:09:27,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2024-11-20 19:09:27,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 184. [2024-11-20 19:09:27,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 116 states have (on average 1.5) internal successors, (174), 173 states have internal predecessors, (174), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-20 19:09:27,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 188 transitions. [2024-11-20 19:09:27,420 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 188 transitions. Word has length 42 [2024-11-20 19:09:27,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:27,420 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 188 transitions. [2024-11-20 19:09:27,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:09:27,420 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 188 transitions. [2024-11-20 19:09:27,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-20 19:09:27,420 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:27,420 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:27,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-20 19:09:27,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:27,621 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting func_to_recursive_line_26_to_34_0Err29ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-20 19:09:27,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:27,622 INFO L85 PathProgramCache]: Analyzing trace with hash -808789972, now seen corresponding path program 1 times [2024-11-20 19:09:27,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:27,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931870884] [2024-11-20 19:09:27,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:27,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:27,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:09:27,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [788748068] [2024-11-20 19:09:27,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:27,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:27,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:09:27,637 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:09:27,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-20 19:09:27,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:27,717 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-20 19:09:27,719 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:09:27,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:09:27,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-20 19:09:27,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:27,833 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:09:27,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:27,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931870884] [2024-11-20 19:09:27,833 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:09:27,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788748068] [2024-11-20 19:09:27,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788748068] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:27,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:27,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-20 19:09:27,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109845383] [2024-11-20 19:09:27,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:27,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-20 19:09:27,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:27,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-20 19:09:27,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-20 19:09:27,834 INFO L87 Difference]: Start difference. First operand 184 states and 188 transitions. Second operand has 9 states, 7 states have (on average 5.571428571428571) internal successors, (39), 8 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 19:09:28,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:28,016 INFO L93 Difference]: Finished difference Result 234 states and 239 transitions. [2024-11-20 19:09:28,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 19:09:28,017 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.571428571428571) internal successors, (39), 8 states have internal predecessors, (39), 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 42 [2024-11-20 19:09:28,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:28,018 INFO L225 Difference]: With dead ends: 234 [2024-11-20 19:09:28,018 INFO L226 Difference]: Without dead ends: 233 [2024-11-20 19:09:28,018 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-20 19:09:28,018 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 134 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:28,018 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 619 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 19:09:28,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2024-11-20 19:09:28,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 186. [2024-11-20 19:09:28,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 118 states have (on average 1.4915254237288136) internal successors, (176), 175 states have internal predecessors, (176), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-20 19:09:28,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 190 transitions. [2024-11-20 19:09:28,024 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 190 transitions. Word has length 42 [2024-11-20 19:09:28,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:28,024 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 190 transitions. [2024-11-20 19:09:28,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.571428571428571) internal successors, (39), 8 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 19:09:28,024 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 190 transitions. [2024-11-20 19:09:28,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-20 19:09:28,025 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:28,025 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:28,039 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-20 19:09:28,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:28,226 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting func_to_recursive_line_26_to_34_0Err30ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-20 19:09:28,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:28,226 INFO L85 PathProgramCache]: Analyzing trace with hash 697314813, now seen corresponding path program 1 times [2024-11-20 19:09:28,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:28,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108213595] [2024-11-20 19:09:28,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:28,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:28,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:28,363 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-20 19:09:28,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:28,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:28,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:28,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108213595] [2024-11-20 19:09:28,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108213595] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:28,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:28,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 19:09:28,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151381989] [2024-11-20 19:09:28,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:28,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 19:09:28,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:28,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 19:09:28,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-20 19:09:28,368 INFO L87 Difference]: Start difference. First operand 186 states and 190 transitions. Second operand has 7 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 19:09:28,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:28,499 INFO L93 Difference]: Finished difference Result 191 states and 195 transitions. [2024-11-20 19:09:28,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 19:09:28,500 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 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 43 [2024-11-20 19:09:28,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:28,501 INFO L225 Difference]: With dead ends: 191 [2024-11-20 19:09:28,501 INFO L226 Difference]: Without dead ends: 190 [2024-11-20 19:09:28,501 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-20 19:09:28,501 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 53 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:28,502 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 655 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 19:09:28,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-11-20 19:09:28,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 187. [2024-11-20 19:09:28,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 119 states have (on average 1.4873949579831933) internal successors, (177), 176 states have internal predecessors, (177), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-20 19:09:28,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 191 transitions. [2024-11-20 19:09:28,507 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 191 transitions. Word has length 43 [2024-11-20 19:09:28,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:28,507 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 191 transitions. [2024-11-20 19:09:28,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 19:09:28,507 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 191 transitions. [2024-11-20 19:09:28,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-20 19:09:28,507 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:28,508 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:28,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-20 19:09:28,508 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting func_to_recursive_line_26_to_34_0Err31ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-20 19:09:28,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:28,508 INFO L85 PathProgramCache]: Analyzing trace with hash 141922894, now seen corresponding path program 1 times [2024-11-20 19:09:28,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:28,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304931882] [2024-11-20 19:09:28,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:28,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:28,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:28,626 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-20 19:09:28,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:28,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:28,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:28,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304931882] [2024-11-20 19:09:28,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304931882] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:28,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:28,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 19:09:28,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298547741] [2024-11-20 19:09:28,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:28,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 19:09:28,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:28,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 19:09:28,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 19:09:28,631 INFO L87 Difference]: Start difference. First operand 187 states and 191 transitions. Second operand has 6 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 19:09:28,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:28,701 INFO L93 Difference]: Finished difference Result 190 states and 194 transitions. [2024-11-20 19:09:28,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 19:09:28,701 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 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 44 [2024-11-20 19:09:28,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:28,702 INFO L225 Difference]: With dead ends: 190 [2024-11-20 19:09:28,702 INFO L226 Difference]: Without dead ends: 189 [2024-11-20 19:09:28,702 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-20 19:09:28,703 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 48 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:28,703 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 628 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 19:09:28,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-20 19:09:28,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 188. [2024-11-20 19:09:28,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 120 states have (on average 1.4833333333333334) internal successors, (178), 177 states have internal predecessors, (178), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-20 19:09:28,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 192 transitions. [2024-11-20 19:09:28,708 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 192 transitions. Word has length 44 [2024-11-20 19:09:28,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:28,708 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 192 transitions. [2024-11-20 19:09:28,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 19:09:28,708 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 192 transitions. [2024-11-20 19:09:28,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-20 19:09:28,709 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:28,709 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1] [2024-11-20 19:09:28,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-20 19:09:28,709 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting func_to_recursive_line_26_to_34_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-20 19:09:28,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:28,709 INFO L85 PathProgramCache]: Analyzing trace with hash -738016019, now seen corresponding path program 1 times [2024-11-20 19:09:28,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:28,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726545295] [2024-11-20 19:09:28,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:28,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:28,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:09:28,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1497183506] [2024-11-20 19:09:28,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:28,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:28,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:09:28,728 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:09:28,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-20 19:09:28,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:28,810 INFO L255 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-20 19:09:28,812 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:09:28,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:09:28,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:09:28,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-20 19:09:29,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-20 19:09:29,090 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:29,090 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 19:09:29,373 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:29,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:29,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726545295] [2024-11-20 19:09:29,374 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:09:29,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497183506] [2024-11-20 19:09:29,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497183506] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 19:09:29,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-20 19:09:29,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 22 [2024-11-20 19:09:29,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469657874] [2024-11-20 19:09:29,374 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-20 19:09:29,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-20 19:09:29,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:29,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-20 19:09:29,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2024-11-20 19:09:29,375 INFO L87 Difference]: Start difference. First operand 188 states and 192 transitions. Second operand has 23 states, 20 states have (on average 4.35) internal successors, (87), 19 states have internal predecessors, (87), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:09:30,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:30,838 INFO L93 Difference]: Finished difference Result 374 states and 384 transitions. [2024-11-20 19:09:30,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-20 19:09:30,839 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 4.35) internal successors, (87), 19 states have internal predecessors, (87), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 48 [2024-11-20 19:09:30,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:30,840 INFO L225 Difference]: With dead ends: 374 [2024-11-20 19:09:30,840 INFO L226 Difference]: Without dead ends: 371 [2024-11-20 19:09:30,841 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=264, Invalid=1296, Unknown=0, NotChecked=0, Total=1560 [2024-11-20 19:09:30,841 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 738 mSDsluCounter, 1272 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 1379 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:30,841 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [740 Valid, 1379 Invalid, 925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 894 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-20 19:09:30,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2024-11-20 19:09:30,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 262. [2024-11-20 19:09:30,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 186 states have (on average 1.575268817204301) internal successors, (293), 245 states have internal predecessors, (293), 10 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2024-11-20 19:09:30,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 319 transitions. [2024-11-20 19:09:30,850 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 319 transitions. Word has length 48 [2024-11-20 19:09:30,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:30,850 INFO L471 AbstractCegarLoop]: Abstraction has 262 states and 319 transitions. [2024-11-20 19:09:30,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 4.35) internal successors, (87), 19 states have internal predecessors, (87), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:09:30,850 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 319 transitions. [2024-11-20 19:09:30,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-20 19:09:30,851 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:30,851 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:30,857 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-20 19:09:31,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:31,055 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-20 19:09:31,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:31,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1066854839, now seen corresponding path program 1 times [2024-11-20 19:09:31,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:31,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304933431] [2024-11-20 19:09:31,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:31,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:31,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:31,134 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-20 19:09:31,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:31,167 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-20 19:09:31,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:31,169 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-20 19:09:31,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:31,172 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 19:09:31,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:31,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304933431] [2024-11-20 19:09:31,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304933431] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:31,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:31,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 19:09:31,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824838686] [2024-11-20 19:09:31,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:31,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 19:09:31,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:31,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 19:09:31,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 19:09:31,173 INFO L87 Difference]: Start difference. First operand 262 states and 319 transitions. Second operand has 6 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-20 19:09:31,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:31,285 INFO L93 Difference]: Finished difference Result 301 states and 363 transitions. [2024-11-20 19:09:31,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 19:09:31,286 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 50 [2024-11-20 19:09:31,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:31,287 INFO L225 Difference]: With dead ends: 301 [2024-11-20 19:09:31,287 INFO L226 Difference]: Without dead ends: 299 [2024-11-20 19:09:31,288 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 19:09:31,288 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 133 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:31,288 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 358 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 19:09:31,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2024-11-20 19:09:31,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 265. [2024-11-20 19:09:31,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 189 states have (on average 1.566137566137566) internal successors, (296), 247 states have internal predecessors, (296), 10 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (16), 11 states have call predecessors, (16), 10 states have call successors, (16) [2024-11-20 19:09:31,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 322 transitions. [2024-11-20 19:09:31,298 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 322 transitions. Word has length 50 [2024-11-20 19:09:31,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:31,298 INFO L471 AbstractCegarLoop]: Abstraction has 265 states and 322 transitions. [2024-11-20 19:09:31,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-20 19:09:31,299 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 322 transitions. [2024-11-20 19:09:31,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-20 19:09:31,299 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:31,299 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:31,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-20 19:09:31,300 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting func_to_recursive_line_26_to_34_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-20 19:09:31,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:31,301 INFO L85 PathProgramCache]: Analyzing trace with hash -563787057, now seen corresponding path program 1 times [2024-11-20 19:09:31,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:31,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039829902] [2024-11-20 19:09:31,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:31,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:31,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:09:31,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [19115793] [2024-11-20 19:09:31,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:31,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:31,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:09:31,320 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:09:31,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-20 19:09:31,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:31,412 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-20 19:09:31,414 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:09:31,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 19:09:31,487 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 [2024-11-20 19:09:31,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-20 19:09:31,524 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:31,524 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 19:09:31,674 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:31,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:31,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039829902] [2024-11-20 19:09:31,675 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:09:31,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19115793] [2024-11-20 19:09:31,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19115793] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 19:09:31,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-20 19:09:31,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2024-11-20 19:09:31,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198918753] [2024-11-20 19:09:31,675 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-20 19:09:31,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-20 19:09:31,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:31,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-20 19:09:31,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-11-20 19:09:31,676 INFO L87 Difference]: Start difference. First operand 265 states and 322 transitions. Second operand has 15 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:09:31,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:31,980 INFO L93 Difference]: Finished difference Result 299 states and 357 transitions. [2024-11-20 19:09:31,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-20 19:09:31,980 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 50 [2024-11-20 19:09:31,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:31,982 INFO L225 Difference]: With dead ends: 299 [2024-11-20 19:09:31,982 INFO L226 Difference]: Without dead ends: 298 [2024-11-20 19:09:31,983 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 81 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2024-11-20 19:09:31,983 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 471 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:31,983 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 662 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 19:09:31,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2024-11-20 19:09:31,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 266. [2024-11-20 19:09:31,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 190 states have (on average 1.5473684210526315) internal successors, (294), 247 states have internal predecessors, (294), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-20 19:09:31,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 322 transitions. [2024-11-20 19:09:31,995 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 322 transitions. Word has length 50 [2024-11-20 19:09:31,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:31,996 INFO L471 AbstractCegarLoop]: Abstraction has 266 states and 322 transitions. [2024-11-20 19:09:31,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:09:31,996 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 322 transitions. [2024-11-20 19:09:31,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-20 19:09:31,998 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:31,998 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:32,005 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-20 19:09:32,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-20 19:09:32,201 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting func_to_recursive_line_26_to_34_0Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-20 19:09:32,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:32,202 INFO L85 PathProgramCache]: Analyzing trace with hash -297529474, now seen corresponding path program 1 times [2024-11-20 19:09:32,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:32,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431109175] [2024-11-20 19:09:32,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:32,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:32,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:09:32,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [470470931] [2024-11-20 19:09:32,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:32,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:32,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:09:32,223 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:09:32,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-20 19:09:32,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:32,322 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-20 19:09:32,324 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:09:32,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:09:32,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-20 19:09:32,450 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:32,450 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 19:09:33,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:33,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431109175] [2024-11-20 19:09:33,881 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:09:33,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470470931] [2024-11-20 19:09:33,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470470931] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 19:09:33,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-20 19:09:33,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2024-11-20 19:09:33,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647064163] [2024-11-20 19:09:33,881 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-20 19:09:33,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 19:09:33,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:33,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 19:09:33,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=167, Unknown=1, NotChecked=0, Total=210 [2024-11-20 19:09:33,882 INFO L87 Difference]: Start difference. First operand 266 states and 322 transitions. Second operand has 10 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 19:09:34,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:34,129 INFO L93 Difference]: Finished difference Result 328 states and 361 transitions. [2024-11-20 19:09:34,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 19:09:34,130 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2024-11-20 19:09:34,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:34,131 INFO L225 Difference]: With dead ends: 328 [2024-11-20 19:09:34,132 INFO L226 Difference]: Without dead ends: 327 [2024-11-20 19:09:34,132 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=78, Invalid=263, Unknown=1, NotChecked=0, Total=342 [2024-11-20 19:09:34,132 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 213 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:34,132 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 784 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 19:09:34,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2024-11-20 19:09:34,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 266. [2024-11-20 19:09:34,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 190 states have (on average 1.5421052631578946) internal successors, (293), 247 states have internal predecessors, (293), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-20 19:09:34,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 321 transitions. [2024-11-20 19:09:34,144 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 321 transitions. Word has length 51 [2024-11-20 19:09:34,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:34,144 INFO L471 AbstractCegarLoop]: Abstraction has 266 states and 321 transitions. [2024-11-20 19:09:34,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 19:09:34,144 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 321 transitions. [2024-11-20 19:09:34,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-20 19:09:34,146 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:34,146 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:34,153 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-20 19:09:34,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-20 19:09:34,351 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-20 19:09:34,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:34,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1249681799, now seen corresponding path program 1 times [2024-11-20 19:09:34,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:34,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008332029] [2024-11-20 19:09:34,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:34,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:34,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:09:34,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1597757679] [2024-11-20 19:09:34,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:34,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:34,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:09:34,373 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:09:34,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-20 19:09:34,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:34,482 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-20 19:09:34,483 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:09:34,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 19:09:34,562 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-20 19:09:34,569 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:34,569 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:09:34,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:34,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008332029] [2024-11-20 19:09:34,569 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:09:34,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597757679] [2024-11-20 19:09:34,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597757679] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:34,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:34,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 19:09:34,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541986188] [2024-11-20 19:09:34,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:34,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 19:09:34,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:34,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 19:09:34,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 19:09:34,571 INFO L87 Difference]: Start difference. First operand 266 states and 321 transitions. Second operand has 6 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-20 19:09:34,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:34,766 INFO L93 Difference]: Finished difference Result 306 states and 360 transitions. [2024-11-20 19:09:34,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 19:09:34,766 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 52 [2024-11-20 19:09:34,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:34,767 INFO L225 Difference]: With dead ends: 306 [2024-11-20 19:09:34,767 INFO L226 Difference]: Without dead ends: 305 [2024-11-20 19:09:34,768 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-20 19:09:34,768 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 166 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 8 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:34,768 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 364 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 156 Invalid, 6 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 19:09:34,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2024-11-20 19:09:34,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 267. [2024-11-20 19:09:34,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 191 states have (on average 1.5392670157068062) internal successors, (294), 248 states have internal predecessors, (294), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-20 19:09:34,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 322 transitions. [2024-11-20 19:09:34,781 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 322 transitions. Word has length 52 [2024-11-20 19:09:34,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:34,782 INFO L471 AbstractCegarLoop]: Abstraction has 267 states and 322 transitions. [2024-11-20 19:09:34,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-20 19:09:34,782 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 322 transitions. [2024-11-20 19:09:34,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-20 19:09:34,782 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:34,782 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2024-11-20 19:09:34,792 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-20 19:09:34,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-20 19:09:34,983 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting func_to_recursive_line_26_to_34_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-20 19:09:34,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:34,983 INFO L85 PathProgramCache]: Analyzing trace with hash -633478991, now seen corresponding path program 1 times [2024-11-20 19:09:34,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:34,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366456848] [2024-11-20 19:09:34,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:34,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:34,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:09:34,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [665731906] [2024-11-20 19:09:34,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:34,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:34,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:09:34,999 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:09:35,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-20 19:09:35,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:35,100 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-20 19:09:35,102 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:09:35,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 19:09:35,196 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 [2024-11-20 19:09:35,242 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 13 [2024-11-20 19:09:35,256 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:35,256 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 19:09:35,448 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:35,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:35,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366456848] [2024-11-20 19:09:35,448 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:09:35,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665731906] [2024-11-20 19:09:35,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665731906] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 19:09:35,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-20 19:09:35,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2024-11-20 19:09:35,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378849861] [2024-11-20 19:09:35,448 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-20 19:09:35,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-20 19:09:35,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:35,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-20 19:09:35,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2024-11-20 19:09:35,450 INFO L87 Difference]: Start difference. First operand 267 states and 322 transitions. Second operand has 17 states, 14 states have (on average 6.571428571428571) internal successors, (92), 14 states have internal predecessors, (92), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:09:36,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:36,371 INFO L93 Difference]: Finished difference Result 297 states and 352 transitions. [2024-11-20 19:09:36,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-20 19:09:36,372 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 6.571428571428571) internal successors, (92), 14 states have internal predecessors, (92), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 52 [2024-11-20 19:09:36,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:36,373 INFO L225 Difference]: With dead ends: 297 [2024-11-20 19:09:36,373 INFO L226 Difference]: Without dead ends: 296 [2024-11-20 19:09:36,373 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 83 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=159, Invalid=491, Unknown=0, NotChecked=0, Total=650 [2024-11-20 19:09:36,374 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 483 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:36,374 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 885 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-20 19:09:36,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2024-11-20 19:09:36,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 266. [2024-11-20 19:09:36,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 191 states have (on average 1.5235602094240839) internal successors, (291), 247 states have internal predecessors, (291), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-20 19:09:36,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 319 transitions. [2024-11-20 19:09:36,383 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 319 transitions. Word has length 52 [2024-11-20 19:09:36,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:36,383 INFO L471 AbstractCegarLoop]: Abstraction has 266 states and 319 transitions. [2024-11-20 19:09:36,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 6.571428571428571) internal successors, (92), 14 states have internal predecessors, (92), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:09:36,383 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 319 transitions. [2024-11-20 19:09:36,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-20 19:09:36,383 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:36,383 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:36,391 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-20 19:09:36,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:36,588 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-20 19:09:36,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:36,588 INFO L85 PathProgramCache]: Analyzing trace with hash -85430049, now seen corresponding path program 1 times [2024-11-20 19:09:36,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:36,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342400221] [2024-11-20 19:09:36,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:36,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:36,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:09:36,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1768993060] [2024-11-20 19:09:36,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:36,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:36,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:09:36,611 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:09:36,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-20 19:09:36,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:36,722 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-20 19:09:36,723 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:09:36,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:09:36,792 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:36,792 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:09:36,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:36,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342400221] [2024-11-20 19:09:36,792 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:09:36,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768993060] [2024-11-20 19:09:36,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768993060] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:36,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:36,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 19:09:36,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339559592] [2024-11-20 19:09:36,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:36,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 19:09:36,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:36,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 19:09:36,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 19:09:36,794 INFO L87 Difference]: Start difference. First operand 266 states and 319 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, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-20 19:09:36,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:36,950 INFO L93 Difference]: Finished difference Result 304 states and 356 transitions. [2024-11-20 19:09:36,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 19:09:36,950 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, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 53 [2024-11-20 19:09:36,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:36,951 INFO L225 Difference]: With dead ends: 304 [2024-11-20 19:09:36,951 INFO L226 Difference]: Without dead ends: 299 [2024-11-20 19:09:36,951 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-20 19:09:36,952 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 128 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 12 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:36,952 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 446 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 159 Invalid, 6 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 19:09:36,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2024-11-20 19:09:36,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 271. [2024-11-20 19:09:36,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 196 states have (on average 1.510204081632653) internal successors, (296), 252 states have internal predecessors, (296), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-20 19:09:36,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 324 transitions. [2024-11-20 19:09:36,965 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 324 transitions. Word has length 53 [2024-11-20 19:09:36,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:36,965 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 324 transitions. [2024-11-20 19:09:36,966 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, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-20 19:09:36,966 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 324 transitions. [2024-11-20 19:09:36,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-20 19:09:36,966 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:36,966 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2024-11-20 19:09:36,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-20 19:09:37,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-20 19:09:37,167 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting func_to_recursive_line_26_to_34_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-20 19:09:37,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:37,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1836987872, now seen corresponding path program 1 times [2024-11-20 19:09:37,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:37,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101281458] [2024-11-20 19:09:37,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:37,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:37,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:09:37,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1559187289] [2024-11-20 19:09:37,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:37,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:37,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:09:37,186 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:09:37,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-20 19:09:37,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:37,295 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-20 19:09:37,296 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:09:37,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:09:37,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-20 19:09:37,422 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:37,422 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 19:09:37,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:37,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101281458] [2024-11-20 19:09:37,738 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:09:37,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559187289] [2024-11-20 19:09:37,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559187289] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 19:09:37,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-20 19:09:37,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-11-20 19:09:37,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033519951] [2024-11-20 19:09:37,738 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-20 19:09:37,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 19:09:37,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:37,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 19:09:37,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2024-11-20 19:09:37,739 INFO L87 Difference]: Start difference. First operand 271 states and 324 transitions. Second operand has 11 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 19:09:37,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:37,965 INFO L93 Difference]: Finished difference Result 319 states and 351 transitions. [2024-11-20 19:09:37,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-20 19:09:37,966 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2024-11-20 19:09:37,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:37,970 INFO L225 Difference]: With dead ends: 319 [2024-11-20 19:09:37,970 INFO L226 Difference]: Without dead ends: 318 [2024-11-20 19:09:37,971 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2024-11-20 19:09:37,971 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 262 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:37,971 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 701 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 19:09:37,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2024-11-20 19:09:37,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 271. [2024-11-20 19:09:37,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 196 states have (on average 1.5051020408163265) internal successors, (295), 252 states have internal predecessors, (295), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-20 19:09:37,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 323 transitions. [2024-11-20 19:09:37,982 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 323 transitions. Word has length 53 [2024-11-20 19:09:37,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:37,982 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 323 transitions. [2024-11-20 19:09:37,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 19:09:37,982 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 323 transitions. [2024-11-20 19:09:37,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-20 19:09:37,983 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:37,984 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1] [2024-11-20 19:09:37,992 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-20 19:09:38,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:38,184 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting func_to_recursive_line_26_to_34_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-20 19:09:38,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:38,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1112049299, now seen corresponding path program 1 times [2024-11-20 19:09:38,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:38,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805618342] [2024-11-20 19:09:38,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:38,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:38,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:09:38,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [315981298] [2024-11-20 19:09:38,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:38,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:38,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:09:38,207 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:09:38,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-20 19:09:38,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:38,320 INFO L255 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-20 19:09:38,321 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:09:38,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 19:09:38,384 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 [2024-11-20 19:09:38,445 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 36 treesize of output 16 [2024-11-20 19:09:38,461 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:38,461 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 19:09:58,820 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 3 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:58,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:58,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805618342] [2024-11-20 19:09:58,820 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:09:58,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315981298] [2024-11-20 19:09:58,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315981298] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 19:09:58,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-20 19:09:58,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2024-11-20 19:09:58,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338247685] [2024-11-20 19:09:58,821 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-20 19:09:58,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-20 19:09:58,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:58,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-20 19:09:58,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=304, Unknown=5, NotChecked=0, Total=380 [2024-11-20 19:09:58,821 INFO L87 Difference]: Start difference. First operand 271 states and 323 transitions. Second operand has 20 states, 17 states have (on average 5.823529411764706) internal successors, (99), 17 states have internal predecessors, (99), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:10:00,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:10:00,498 INFO L93 Difference]: Finished difference Result 291 states and 343 transitions. [2024-11-20 19:10:00,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-20 19:10:00,500 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 5.823529411764706) internal successors, (99), 17 states have internal predecessors, (99), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 54 [2024-11-20 19:10:00,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:10:00,501 INFO L225 Difference]: With dead ends: 291 [2024-11-20 19:10:00,501 INFO L226 Difference]: Without dead ends: 290 [2024-11-20 19:10:00,502 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 85 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 20.5s TimeCoverageRelationStatistics Valid=224, Invalid=701, Unknown=5, NotChecked=0, Total=930 [2024-11-20 19:10:00,502 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 491 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 958 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-20 19:10:00,502 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 958 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-20 19:10:00,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2024-11-20 19:10:00,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 270. [2024-11-20 19:10:00,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 196 states have (on average 1.489795918367347) internal successors, (292), 251 states have internal predecessors, (292), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-20 19:10:00,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 320 transitions. [2024-11-20 19:10:00,511 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 320 transitions. Word has length 54 [2024-11-20 19:10:00,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:10:00,511 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 320 transitions. [2024-11-20 19:10:00,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 5.823529411764706) internal successors, (99), 17 states have internal predecessors, (99), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:10:00,512 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 320 transitions. [2024-11-20 19:10:00,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-20 19:10:00,512 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:10:00,512 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:10:00,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-20 19:10:00,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:10:00,713 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting func_to_recursive_line_26_to_34_0Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-20 19:10:00,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:10:00,714 INFO L85 PathProgramCache]: Analyzing trace with hash 113790018, now seen corresponding path program 1 times [2024-11-20 19:10:00,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:10:00,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042541994] [2024-11-20 19:10:00,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:10:00,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:10:00,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:10:00,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1521843385] [2024-11-20 19:10:00,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:10:00,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:10:00,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:10:00,740 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:10:00,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-20 19:10:00,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:10:00,852 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-20 19:10:00,854 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:10:00,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:10:00,927 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-20 19:10:01,008 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:10:01,008 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 19:10:01,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:10:01,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042541994] [2024-11-20 19:10:01,384 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:10:01,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521843385] [2024-11-20 19:10:01,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521843385] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 19:10:01,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-20 19:10:01,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-11-20 19:10:01,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982254713] [2024-11-20 19:10:01,384 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-20 19:10:01,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 19:10:01,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:10:01,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 19:10:01,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2024-11-20 19:10:01,385 INFO L87 Difference]: Start difference. First operand 270 states and 320 transitions. Second operand has 12 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 19:10:01,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:10:01,652 INFO L93 Difference]: Finished difference Result 316 states and 347 transitions. [2024-11-20 19:10:01,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-20 19:10:01,653 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2024-11-20 19:10:01,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:10:01,654 INFO L225 Difference]: With dead ends: 316 [2024-11-20 19:10:01,654 INFO L226 Difference]: Without dead ends: 315 [2024-11-20 19:10:01,655 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=471, Unknown=0, NotChecked=0, Total=600 [2024-11-20 19:10:01,655 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 214 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 19:10:01,655 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 878 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 19:10:01,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2024-11-20 19:10:01,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 270. [2024-11-20 19:10:01,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 196 states have (on average 1.4846938775510203) internal successors, (291), 251 states have internal predecessors, (291), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-20 19:10:01,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 319 transitions. [2024-11-20 19:10:01,667 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 319 transitions. Word has length 55 [2024-11-20 19:10:01,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:10:01,667 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 319 transitions. [2024-11-20 19:10:01,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 19:10:01,667 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 319 transitions. [2024-11-20 19:10:01,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-20 19:10:01,667 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:10:01,667 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1] [2024-11-20 19:10:01,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-20 19:10:01,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:10:01,868 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting func_to_recursive_line_26_to_34_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-20 19:10:01,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:10:01,868 INFO L85 PathProgramCache]: Analyzing trace with hash -767476619, now seen corresponding path program 1 times [2024-11-20 19:10:01,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:10:01,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143642693] [2024-11-20 19:10:01,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:10:01,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:10:01,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:10:01,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [963041587] [2024-11-20 19:10:01,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:10:01,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:10:01,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:10:01,899 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:10:01,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-20 19:10:01,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:10:02,000 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 73 conjuncts are in the unsatisfiable core [2024-11-20 19:10:02,002 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:10:02,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:10:02,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:10:02,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-20 19:10:02,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-20 19:10:02,353 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:10:02,353 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 19:10:02,714 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:10:02,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:10:02,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143642693] [2024-11-20 19:10:02,715 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:10:02,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963041587] [2024-11-20 19:10:02,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963041587] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 19:10:02,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-20 19:10:02,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 28 [2024-11-20 19:10:02,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957413550] [2024-11-20 19:10:02,715 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-20 19:10:02,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-20 19:10:02,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:10:02,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-20 19:10:02,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=711, Unknown=0, NotChecked=0, Total=812 [2024-11-20 19:10:02,716 INFO L87 Difference]: Start difference. First operand 270 states and 319 transitions. Second operand has 29 states, 26 states have (on average 3.9615384615384617) internal successors, (103), 25 states have internal predecessors, (103), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:10:08,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-20 19:10:08,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:10:08,972 INFO L93 Difference]: Finished difference Result 314 states and 346 transitions. [2024-11-20 19:10:08,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-20 19:10:08,972 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 3.9615384615384617) internal successors, (103), 25 states have internal predecessors, (103), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 56 [2024-11-20 19:10:08,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:10:08,973 INFO L225 Difference]: With dead ends: 314 [2024-11-20 19:10:08,974 INFO L226 Difference]: Without dead ends: 309 [2024-11-20 19:10:08,974 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=387, Invalid=2163, Unknown=0, NotChecked=0, Total=2550 [2024-11-20 19:10:08,975 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 683 mSDsluCounter, 1398 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 39 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 1489 SdHoareTripleChecker+Invalid, 1315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2024-11-20 19:10:08,975 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [684 Valid, 1489 Invalid, 1315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1275 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2024-11-20 19:10:08,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2024-11-20 19:10:08,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 267. [2024-11-20 19:10:08,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 196 states have (on average 1.4489795918367347) internal successors, (284), 248 states have internal predecessors, (284), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-20 19:10:08,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 312 transitions. [2024-11-20 19:10:08,991 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 312 transitions. Word has length 56 [2024-11-20 19:10:08,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:10:08,991 INFO L471 AbstractCegarLoop]: Abstraction has 267 states and 312 transitions. [2024-11-20 19:10:08,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 3.9615384615384617) internal successors, (103), 25 states have internal predecessors, (103), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:10:08,991 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 312 transitions. [2024-11-20 19:10:08,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-20 19:10:08,992 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:10:08,992 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:10:08,999 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-20 19:10:09,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:10:09,192 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-20 19:10:09,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:10:09,193 INFO L85 PathProgramCache]: Analyzing trace with hash 884198591, now seen corresponding path program 1 times [2024-11-20 19:10:09,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:10:09,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690845084] [2024-11-20 19:10:09,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:10:09,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:10:09,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:10:09,317 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-20 19:10:09,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:10:09,353 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-20 19:10:09,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:10:09,356 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-20 19:10:09,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:10:09,359 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 19:10:09,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:10:09,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690845084] [2024-11-20 19:10:09,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690845084] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:10:09,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:10:09,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 19:10:09,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126063783] [2024-11-20 19:10:09,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:10:09,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 19:10:09,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:10:09,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 19:10:09,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-20 19:10:09,362 INFO L87 Difference]: Start difference. First operand 267 states and 312 transitions. Second operand has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-20 19:10:09,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:10:09,537 INFO L93 Difference]: Finished difference Result 290 states and 339 transitions. [2024-11-20 19:10:09,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 19:10:09,538 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 58 [2024-11-20 19:10:09,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:10:09,538 INFO L225 Difference]: With dead ends: 290 [2024-11-20 19:10:09,539 INFO L226 Difference]: Without dead ends: 289 [2024-11-20 19:10:09,539 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-20 19:10:09,539 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 105 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 19:10:09,539 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 382 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 19:10:09,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2024-11-20 19:10:09,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 268. [2024-11-20 19:10:09,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 197 states have (on average 1.4467005076142132) internal successors, (285), 249 states have internal predecessors, (285), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-20 19:10:09,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 313 transitions. [2024-11-20 19:10:09,551 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 313 transitions. Word has length 58 [2024-11-20 19:10:09,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:10:09,552 INFO L471 AbstractCegarLoop]: Abstraction has 268 states and 313 transitions. [2024-11-20 19:10:09,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-20 19:10:09,552 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 313 transitions. [2024-11-20 19:10:09,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-20 19:10:09,553 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:10:09,553 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1] [2024-11-20 19:10:09,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-20 19:10:09,553 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting func_to_recursive_line_26_to_34_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-20 19:10:09,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:10:09,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1189347927, now seen corresponding path program 1 times [2024-11-20 19:10:09,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:10:09,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141399056] [2024-11-20 19:10:09,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:10:09,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:10:09,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:10:09,810 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-20 19:10:09,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:10:09,813 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:10:09,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:10:09,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141399056] [2024-11-20 19:10:09,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141399056] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 19:10:09,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458283354] [2024-11-20 19:10:09,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:10:09,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:10:09,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:10:09,818 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:10:09,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-20 19:10:09,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:10:09,933 INFO L255 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-20 19:10:09,935 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:10:10,036 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 [2024-11-20 19:10:10,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-20 19:10:10,100 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:10:10,100 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 19:10:10,226 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:10:10,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458283354] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 19:10:10,226 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 19:10:10,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 20 [2024-11-20 19:10:10,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687312491] [2024-11-20 19:10:10,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 19:10:10,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-20 19:10:10,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:10:10,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-20 19:10:10,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2024-11-20 19:10:10,228 INFO L87 Difference]: Start difference. First operand 268 states and 313 transitions. Second operand has 21 states, 19 states have (on average 7.631578947368421) internal successors, (145), 17 states have internal predecessors, (145), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 19:10:10,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:10:10,697 INFO L93 Difference]: Finished difference Result 286 states and 331 transitions. [2024-11-20 19:10:10,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-20 19:10:10,698 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 7.631578947368421) internal successors, (145), 17 states have internal predecessors, (145), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 58 [2024-11-20 19:10:10,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:10:10,699 INFO L225 Difference]: With dead ends: 286 [2024-11-20 19:10:10,699 INFO L226 Difference]: Without dead ends: 285 [2024-11-20 19:10:10,699 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 105 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2024-11-20 19:10:10,699 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 576 mSDsluCounter, 1028 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 1138 SdHoareTripleChecker+Invalid, 687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-20 19:10:10,700 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [577 Valid, 1138 Invalid, 687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-20 19:10:10,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2024-11-20 19:10:10,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 267. [2024-11-20 19:10:10,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 197 states have (on average 1.4314720812182742) internal successors, (282), 248 states have internal predecessors, (282), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-20 19:10:10,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 310 transitions. [2024-11-20 19:10:10,709 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 310 transitions. Word has length 58 [2024-11-20 19:10:10,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:10:10,710 INFO L471 AbstractCegarLoop]: Abstraction has 267 states and 310 transitions. [2024-11-20 19:10:10,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 7.631578947368421) internal successors, (145), 17 states have internal predecessors, (145), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 19:10:10,710 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 310 transitions. [2024-11-20 19:10:10,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-20 19:10:10,710 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:10:10,710 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:10:10,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-20 19:10:10,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-20 19:10:10,915 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-20 19:10:10,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:10:10,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1640352613, now seen corresponding path program 1 times [2024-11-20 19:10:10,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:10:10,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353827594] [2024-11-20 19:10:10,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:10:10,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:10:10,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:10:10,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1445174185] [2024-11-20 19:10:10,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:10:10,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:10:10,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:10:10,931 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:10:10,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-20 19:10:11,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:10:11,027 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-20 19:10:11,029 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:10:11,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 19:10:11,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:10:11,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-20 19:10:11,236 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:10:11,236 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:10:11,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:10:11,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353827594] [2024-11-20 19:10:11,237 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:10:11,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445174185] [2024-11-20 19:10:11,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445174185] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:10:11,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:10:11,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 19:10:11,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456724942] [2024-11-20 19:10:11,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:10:11,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 19:10:11,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:10:11,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 19:10:11,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-20 19:10:11,238 INFO L87 Difference]: Start difference. First operand 267 states and 310 transitions. Second operand has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 7 states have internal predecessors, (53), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-20 19:10:11,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:10:11,539 INFO L93 Difference]: Finished difference Result 293 states and 335 transitions. [2024-11-20 19:10:11,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 19:10:11,539 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 7 states have internal predecessors, (53), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 59 [2024-11-20 19:10:11,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:10:11,540 INFO L225 Difference]: With dead ends: 293 [2024-11-20 19:10:11,540 INFO L226 Difference]: Without dead ends: 292 [2024-11-20 19:10:11,541 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-20 19:10:11,541 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 140 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 19:10:11,541 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 486 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 233 Invalid, 1 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 19:10:11,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2024-11-20 19:10:11,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 268. [2024-11-20 19:10:11,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 198 states have (on average 1.4292929292929293) internal successors, (283), 249 states have internal predecessors, (283), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-20 19:10:11,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 311 transitions. [2024-11-20 19:10:11,554 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 311 transitions. Word has length 59 [2024-11-20 19:10:11,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:10:11,555 INFO L471 AbstractCegarLoop]: Abstraction has 268 states and 311 transitions. [2024-11-20 19:10:11,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 7 states have internal predecessors, (53), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-20 19:10:11,555 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 311 transitions. [2024-11-20 19:10:11,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-20 19:10:11,556 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:10:11,556 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1] [2024-11-20 19:10:11,564 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-20 19:10:11,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-20 19:10:11,756 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting func_to_recursive_line_26_to_34_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-20 19:10:11,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:10:11,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1784919802, now seen corresponding path program 1 times [2024-11-20 19:10:11,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:10:11,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110688605] [2024-11-20 19:10:11,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:10:11,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:10:11,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:10:12,019 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-20 19:10:12,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:10:12,022 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:10:12,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:10:12,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110688605] [2024-11-20 19:10:12,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110688605] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 19:10:12,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260547532] [2024-11-20 19:10:12,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:10:12,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:10:12,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:10:12,025 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:10:12,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-20 19:10:12,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:10:12,133 INFO L255 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-20 19:10:12,135 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:10:12,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 19:10:12,258 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 [2024-11-20 19:10:12,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-20 19:10:12,289 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:10:12,289 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 19:10:12,440 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:10:12,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260547532] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 19:10:12,440 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 19:10:12,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 20 [2024-11-20 19:10:12,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809469326] [2024-11-20 19:10:12,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 19:10:12,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-20 19:10:12,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:10:12,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-20 19:10:12,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2024-11-20 19:10:12,441 INFO L87 Difference]: Start difference. First operand 268 states and 311 transitions. Second operand has 21 states, 17 states have (on average 8.235294117647058) internal successors, (140), 16 states have internal predecessors, (140), 8 states have call successors, (8), 7 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 19:10:12,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:10:12,942 INFO L93 Difference]: Finished difference Result 330 states and 341 transitions. [2024-11-20 19:10:12,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-20 19:10:12,943 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 8.235294117647058) internal successors, (140), 16 states have internal predecessors, (140), 8 states have call successors, (8), 7 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 59 [2024-11-20 19:10:12,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:10:12,944 INFO L225 Difference]: With dead ends: 330 [2024-11-20 19:10:12,944 INFO L226 Difference]: Without dead ends: 329 [2024-11-20 19:10:12,945 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 107 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=174, Invalid=638, Unknown=0, NotChecked=0, Total=812 [2024-11-20 19:10:12,945 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 462 mSDsluCounter, 1089 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-20 19:10:12,945 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 1179 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-20 19:10:12,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2024-11-20 19:10:12,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 268. [2024-11-20 19:10:12,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 198 states have (on average 1.4191919191919191) internal successors, (281), 249 states have internal predecessors, (281), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-20 19:10:12,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 309 transitions. [2024-11-20 19:10:12,956 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 309 transitions. Word has length 59 [2024-11-20 19:10:12,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:10:12,957 INFO L471 AbstractCegarLoop]: Abstraction has 268 states and 309 transitions. [2024-11-20 19:10:12,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 8.235294117647058) internal successors, (140), 16 states have internal predecessors, (140), 8 states have call successors, (8), 7 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 19:10:12,957 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 309 transitions. [2024-11-20 19:10:12,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-20 19:10:12,957 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:10:12,957 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:10:12,966 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-20 19:10:13,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-20 19:10:13,158 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-20 19:10:13,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:10:13,158 INFO L85 PathProgramCache]: Analyzing trace with hash -688676479, now seen corresponding path program 1 times [2024-11-20 19:10:13,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:10:13,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414477421] [2024-11-20 19:10:13,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:10:13,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:10:13,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:10:13,238 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-20 19:10:13,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:10:13,264 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-20 19:10:13,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:10:13,266 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-20 19:10:13,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:10:13,270 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 19:10:13,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:10:13,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414477421] [2024-11-20 19:10:13,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414477421] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:10:13,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:10:13,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 19:10:13,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894309731] [2024-11-20 19:10:13,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:10:13,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 19:10:13,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:10:13,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 19:10:13,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 19:10:13,272 INFO L87 Difference]: Start difference. First operand 268 states and 309 transitions. Second operand has 6 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-20 19:10:13,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:10:13,426 INFO L93 Difference]: Finished difference Result 290 states and 332 transitions. [2024-11-20 19:10:13,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 19:10:13,427 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 60 [2024-11-20 19:10:13,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:10:13,428 INFO L225 Difference]: With dead ends: 290 [2024-11-20 19:10:13,428 INFO L226 Difference]: Without dead ends: 284 [2024-11-20 19:10:13,428 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-20 19:10:13,428 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 76 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 19:10:13,428 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 368 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 19:10:13,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2024-11-20 19:10:13,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 274. [2024-11-20 19:10:13,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 204 states have (on average 1.4068627450980393) internal successors, (287), 255 states have internal predecessors, (287), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-20 19:10:13,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 315 transitions. [2024-11-20 19:10:13,454 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 315 transitions. Word has length 60 [2024-11-20 19:10:13,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:10:13,454 INFO L471 AbstractCegarLoop]: Abstraction has 274 states and 315 transitions. [2024-11-20 19:10:13,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-20 19:10:13,455 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 315 transitions. [2024-11-20 19:10:13,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-20 19:10:13,455 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:10:13,455 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1] [2024-11-20 19:10:13,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-20 19:10:13,455 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting func_to_recursive_line_26_to_34_0Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-20 19:10:13,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:10:13,456 INFO L85 PathProgramCache]: Analyzing trace with hash 502061113, now seen corresponding path program 1 times [2024-11-20 19:10:13,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:10:13,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187849692] [2024-11-20 19:10:13,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:10:13,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:10:13,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:10:13,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1735806525] [2024-11-20 19:10:13,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:10:13,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:10:13,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:10:13,477 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:10:13,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-20 19:10:13,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:10:13,591 INFO L255 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-20 19:10:13,593 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:10:13,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 19:10:13,674 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 25 treesize of output 13 [2024-11-20 19:10:13,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-20 19:10:13,747 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:10:13,747 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 19:10:14,928 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:10:14,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:10:14,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187849692] [2024-11-20 19:10:14,928 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:10:14,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735806525] [2024-11-20 19:10:14,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735806525] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 19:10:14,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-20 19:10:14,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2024-11-20 19:10:14,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299561264] [2024-11-20 19:10:14,929 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-20 19:10:14,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-20 19:10:14,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:10:14,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-20 19:10:14,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2024-11-20 19:10:14,929 INFO L87 Difference]: Start difference. First operand 274 states and 315 transitions. Second operand has 17 states, 14 states have (on average 7.142857142857143) internal successors, (100), 14 states have internal predecessors, (100), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:10:17,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.67s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2024-11-20 19:10:19,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2024-11-20 19:10:21,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2024-11-20 19:10:22,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:10:22,127 INFO L93 Difference]: Finished difference Result 278 states and 319 transitions. [2024-11-20 19:10:22,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-20 19:10:22,128 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 7.142857142857143) internal successors, (100), 14 states have internal predecessors, (100), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 60 [2024-11-20 19:10:22,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:10:22,129 INFO L225 Difference]: With dead ends: 278 [2024-11-20 19:10:22,129 INFO L226 Difference]: Without dead ends: 277 [2024-11-20 19:10:22,129 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 99 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=159, Invalid=491, Unknown=0, NotChecked=0, Total=650 [2024-11-20 19:10:22,130 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 416 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 19 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2024-11-20 19:10:22,130 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 955 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 517 Invalid, 3 Unknown, 0 Unchecked, 7.1s Time] [2024-11-20 19:10:22,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2024-11-20 19:10:22,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 273. [2024-11-20 19:10:22,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 204 states have (on average 1.392156862745098) internal successors, (284), 254 states have internal predecessors, (284), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-20 19:10:22,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 312 transitions. [2024-11-20 19:10:22,141 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 312 transitions. Word has length 60 [2024-11-20 19:10:22,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:10:22,141 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 312 transitions. [2024-11-20 19:10:22,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 7.142857142857143) internal successors, (100), 14 states have internal predecessors, (100), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:10:22,141 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 312 transitions. [2024-11-20 19:10:22,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-20 19:10:22,142 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:10:22,142 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2024-11-20 19:10:22,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-20 19:10:22,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-20 19:10:22,343 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting func_to_recursive_line_26_to_34_0Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-20 19:10:22,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:10:22,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1615974552, now seen corresponding path program 1 times [2024-11-20 19:10:22,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:10:22,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038420599] [2024-11-20 19:10:22,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:10:22,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:10:22,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:10:22,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [329007578] [2024-11-20 19:10:22,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:10:22,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:10:22,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:10:22,367 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:10:22,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-20 19:10:22,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:10:22,492 INFO L255 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-20 19:10:22,494 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:10:22,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:10:22,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 19:10:22,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 19:10:22,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-20 19:10:22,719 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-20 19:10:22,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-20 19:10:22,843 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:10:22,844 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 19:10:25,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:10:25,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038420599] [2024-11-20 19:10:25,244 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:10:25,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329007578] [2024-11-20 19:10:25,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329007578] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 19:10:25,244 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-20 19:10:25,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2024-11-20 19:10:25,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422291838] [2024-11-20 19:10:25,244 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-20 19:10:25,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-20 19:10:25,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:10:25,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-20 19:10:25,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=342, Unknown=1, NotChecked=0, Total=420 [2024-11-20 19:10:25,245 INFO L87 Difference]: Start difference. First operand 273 states and 312 transitions. Second operand has 13 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 19:10:29,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-20 19:10:29,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:10:29,668 INFO L93 Difference]: Finished difference Result 296 states and 323 transitions. [2024-11-20 19:10:29,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-20 19:10:29,669 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2024-11-20 19:10:29,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:10:29,670 INFO L225 Difference]: With dead ends: 296 [2024-11-20 19:10:29,670 INFO L226 Difference]: Without dead ends: 295 [2024-11-20 19:10:29,670 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=137, Invalid=512, Unknown=1, NotChecked=0, Total=650 [2024-11-20 19:10:29,671 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 159 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 873 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-20 19:10:29,671 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 873 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 430 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2024-11-20 19:10:29,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2024-11-20 19:10:29,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 273. [2024-11-20 19:10:29,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 204 states have (on average 1.3872549019607843) internal successors, (283), 254 states have internal predecessors, (283), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-20 19:10:29,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 311 transitions. [2024-11-20 19:10:29,685 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 311 transitions. Word has length 61 [2024-11-20 19:10:29,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:10:29,685 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 311 transitions. [2024-11-20 19:10:29,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 19:10:29,686 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 311 transitions. [2024-11-20 19:10:29,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-20 19:10:29,686 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:10:29,686 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2024-11-20 19:10:29,694 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-20 19:10:29,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-20 19:10:29,887 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting func_to_recursive_line_26_to_34_0Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-20 19:10:29,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:10:29,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1444396571, now seen corresponding path program 1 times [2024-11-20 19:10:29,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:10:29,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837079034] [2024-11-20 19:10:29,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:10:29,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:10:29,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:10:29,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1235659947] [2024-11-20 19:10:29,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:10:29,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:10:29,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:10:29,903 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:10:29,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-20 19:10:30,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:10:30,022 INFO L255 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-20 19:10:30,037 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:10:30,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 19:10:30,107 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 25 treesize of output 13 [2024-11-20 19:10:30,170 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 13 [2024-11-20 19:10:30,183 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:10:30,183 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 19:10:50,668 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 5 refuted. 11 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:10:50,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:10:50,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837079034] [2024-11-20 19:10:50,669 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:10:50,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235659947] [2024-11-20 19:10:50,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235659947] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 19:10:50,669 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-20 19:10:50,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2024-11-20 19:10:50,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896812471] [2024-11-20 19:10:50,669 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-20 19:10:50,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-20 19:10:50,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:10:50,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-20 19:10:50,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=304, Unknown=5, NotChecked=0, Total=380 [2024-11-20 19:10:50,670 INFO L87 Difference]: Start difference. First operand 273 states and 311 transitions. Second operand has 20 states, 17 states have (on average 6.764705882352941) internal successors, (115), 17 states have internal predecessors, (115), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:10:51,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:10:51,730 INFO L93 Difference]: Finished difference Result 277 states and 315 transitions. [2024-11-20 19:10:51,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-20 19:10:51,731 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 6.764705882352941) internal successors, (115), 17 states have internal predecessors, (115), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 62 [2024-11-20 19:10:51,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:10:51,732 INFO L225 Difference]: With dead ends: 277 [2024-11-20 19:10:51,732 INFO L226 Difference]: Without dead ends: 276 [2024-11-20 19:10:51,732 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 101 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 20.5s TimeCoverageRelationStatistics Valid=224, Invalid=701, Unknown=5, NotChecked=0, Total=930 [2024-11-20 19:10:51,733 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 431 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-20 19:10:51,733 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 934 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-20 19:10:51,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2024-11-20 19:10:51,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 272. [2024-11-20 19:10:51,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 204 states have (on average 1.3725490196078431) internal successors, (280), 253 states have internal predecessors, (280), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-20 19:10:51,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 308 transitions. [2024-11-20 19:10:51,743 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 308 transitions. Word has length 62 [2024-11-20 19:10:51,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:10:51,744 INFO L471 AbstractCegarLoop]: Abstraction has 272 states and 308 transitions. [2024-11-20 19:10:51,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 6.764705882352941) internal successors, (115), 17 states have internal predecessors, (115), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:10:51,744 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 308 transitions. [2024-11-20 19:10:51,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-20 19:10:51,744 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:10:51,745 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1] [2024-11-20 19:10:51,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-20 19:10:51,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2024-11-20 19:10:51,945 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting func_to_recursive_line_26_to_34_0Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-20 19:10:51,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:10:51,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1826620874, now seen corresponding path program 1 times [2024-11-20 19:10:51,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:10:51,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863599542] [2024-11-20 19:10:51,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:10:51,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:10:51,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:10:51,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [309754871] [2024-11-20 19:10:51,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:10:51,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:10:51,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:10:51,965 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:10:51,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-20 19:10:52,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:10:52,091 INFO L255 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-20 19:10:52,093 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:10:52,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:10:52,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-20 19:10:52,259 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:10:52,259 INFO L311 TraceCheckSpWp]: Computing backward predicates...