./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_loop-crafted/recursified_simple_array_index_value_3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_loop-crafted/recursified_simple_array_index_value_3.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7a78b2f82c5c523b03c70ba898547797b8578723f2b367d871b1e6ef867cb4b5 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 03:16:05,450 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 03:16:05,522 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 03:16:05,527 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 03:16:05,527 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 03:16:05,553 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 03:16:05,556 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 03:16:05,556 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 03:16:05,557 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 03:16:05,557 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 03:16:05,558 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 03:16:05,558 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 03:16:05,558 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 03:16:05,559 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 03:16:05,561 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 03:16:05,561 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 03:16:05,561 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 03:16:05,562 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 03:16:05,562 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 03:16:05,562 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 03:16:05,562 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 03:16:05,566 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 03:16:05,566 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 03:16:05,566 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 03:16:05,566 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 03:16:05,567 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 03:16:05,567 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 03:16:05,567 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 03:16:05,567 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 03:16:05,568 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 03:16:05,568 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 03:16:05,568 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 03:16:05,568 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 03:16:05,568 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 03:16:05,568 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 03:16:05,569 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 03:16:05,569 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 03:16:05,569 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 03:16:05,569 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 03:16:05,570 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 03:16:05,570 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 03:16:05,570 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 03:16:05,570 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a78b2f82c5c523b03c70ba898547797b8578723f2b367d871b1e6ef867cb4b5 [2024-10-14 03:16:05,844 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 03:16:05,868 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 03:16:05,872 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 03:16:05,873 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 03:16:05,874 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 03:16:05,875 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_loop-crafted/recursified_simple_array_index_value_3.i [2024-10-14 03:16:07,293 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 03:16:07,468 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 03:16:07,468 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_loop-crafted/recursified_simple_array_index_value_3.i [2024-10-14 03:16:07,477 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56bee4e01/dd2fdbf1178a46f7bfbe74301785d185/FLAG13a783da9 [2024-10-14 03:16:07,852 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56bee4e01/dd2fdbf1178a46f7bfbe74301785d185 [2024-10-14 03:16:07,854 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 03:16:07,855 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 03:16:07,856 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 03:16:07,857 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 03:16:07,863 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 03:16:07,863 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:16:07" (1/1) ... [2024-10-14 03:16:07,864 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@505865ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:16:07, skipping insertion in model container [2024-10-14 03:16:07,864 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:16:07" (1/1) ... [2024-10-14 03:16:07,890 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 03:16:08,045 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_loop-crafted/recursified_simple_array_index_value_3.i[1898,1911] [2024-10-14 03:16:08,058 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 03:16:08,067 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 03:16:08,082 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_loop-crafted/recursified_simple_array_index_value_3.i[1898,1911] [2024-10-14 03:16:08,095 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 03:16:08,121 INFO L204 MainTranslator]: Completed translation [2024-10-14 03:16:08,121 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:16:08 WrapperNode [2024-10-14 03:16:08,122 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 03:16:08,123 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 03:16:08,123 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 03:16:08,123 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 03:16:08,130 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:16:08" (1/1) ... [2024-10-14 03:16:08,137 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:16:08" (1/1) ... [2024-10-14 03:16:08,154 INFO L138 Inliner]: procedures = 18, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 55 [2024-10-14 03:16:08,155 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 03:16:08,155 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 03:16:08,155 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 03:16:08,155 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 03:16:08,163 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:16:08" (1/1) ... [2024-10-14 03:16:08,163 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:16:08" (1/1) ... [2024-10-14 03:16:08,165 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:16:08" (1/1) ... [2024-10-14 03:16:08,181 INFO L175 MemorySlicer]: Split 21 memory accesses to 4 slices as follows [2, 12, 4, 3]. 57 percent of accesses are in the largest equivalence class. The 4 initializations are split as follows [2, 1, 1, 0]. The 5 writes are split as follows [0, 3, 1, 1]. [2024-10-14 03:16:08,181 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:16:08" (1/1) ... [2024-10-14 03:16:08,181 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:16:08" (1/1) ... [2024-10-14 03:16:08,186 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:16:08" (1/1) ... [2024-10-14 03:16:08,187 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:16:08" (1/1) ... [2024-10-14 03:16:08,189 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:16:08" (1/1) ... [2024-10-14 03:16:08,190 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:16:08" (1/1) ... [2024-10-14 03:16:08,192 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 03:16:08,192 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 03:16:08,192 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 03:16:08,193 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 03:16:08,193 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:16:08" (1/1) ... [2024-10-14 03:16:08,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 03:16:08,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 03:16:08,238 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 03:16:08,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 03:16:08,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 03:16:08,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 03:16:08,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 03:16:08,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-14 03:16:08,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-14 03:16:08,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-14 03:16:08,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-14 03:16:08,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-14 03:16:08,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-14 03:16:08,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-14 03:16:08,290 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_38_to_41_0 [2024-10-14 03:16:08,290 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_38_to_41_0 [2024-10-14 03:16:08,290 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_44_to_45_0 [2024-10-14 03:16:08,291 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_44_to_45_0 [2024-10-14 03:16:08,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 03:16:08,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 03:16:08,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-14 03:16:08,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-14 03:16:08,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-14 03:16:08,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-14 03:16:08,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-14 03:16:08,414 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 03:16:08,421 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 03:16:08,650 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-10-14 03:16:08,652 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 03:16:08,686 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 03:16:08,687 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-14 03:16:08,687 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:16:08 BoogieIcfgContainer [2024-10-14 03:16:08,688 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 03:16:08,691 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 03:16:08,691 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 03:16:08,694 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 03:16:08,695 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:16:07" (1/3) ... [2024-10-14 03:16:08,695 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22259123 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:16:08, skipping insertion in model container [2024-10-14 03:16:08,696 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:16:08" (2/3) ... [2024-10-14 03:16:08,696 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22259123 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:16:08, skipping insertion in model container [2024-10-14 03:16:08,697 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:16:08" (3/3) ... [2024-10-14 03:16:08,698 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_simple_array_index_value_3.i [2024-10-14 03:16:08,715 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 03:16:08,715 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 03:16:08,763 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 03:16:08,768 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;@4c8fe42b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 03:16:08,769 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-14 03:16:08,772 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 17 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-10-14 03:16:08,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-14 03:16:08,778 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 03:16:08,778 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 03:16:08,779 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_44_to_45_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_44_to_45_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 03:16:08,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 03:16:08,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1199887809, now seen corresponding path program 1 times [2024-10-14 03:16:08,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 03:16:08,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425019763] [2024-10-14 03:16:08,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 03:16:08,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 03:16:08,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:16:09,359 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 03:16:09,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:16:09,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 03:16:09,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 03:16:09,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425019763] [2024-10-14 03:16:09,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425019763] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 03:16:09,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 03:16:09,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 03:16:09,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374703253] [2024-10-14 03:16:09,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 03:16:09,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 03:16:09,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 03:16:09,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 03:16:09,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-14 03:16:09,514 INFO L87 Difference]: Start difference. First operand has 22 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 17 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-14 03:16:09,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 03:16:09,724 INFO L93 Difference]: Finished difference Result 42 states and 54 transitions. [2024-10-14 03:16:09,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 03:16:09,727 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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 14 [2024-10-14 03:16:09,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 03:16:09,735 INFO L225 Difference]: With dead ends: 42 [2024-10-14 03:16:09,736 INFO L226 Difference]: Without dead ends: 20 [2024-10-14 03:16:09,739 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-14 03:16:09,745 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 13 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 03:16:09,747 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 19 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 03:16:09,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-10-14 03:16:09,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-10-14 03:16:09,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 15 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-14 03:16:09,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2024-10-14 03:16:09,787 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 14 [2024-10-14 03:16:09,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 03:16:09,788 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2024-10-14 03:16:09,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-14 03:16:09,789 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2024-10-14 03:16:09,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-14 03:16:09,790 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 03:16:09,790 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 03:16:09,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 03:16:09,791 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_44_to_45_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_44_to_45_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 03:16:09,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 03:16:09,792 INFO L85 PathProgramCache]: Analyzing trace with hash -658709991, now seen corresponding path program 1 times [2024-10-14 03:16:09,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 03:16:09,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068535770] [2024-10-14 03:16:09,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 03:16:09,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 03:16:09,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:16:10,151 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 03:16:10,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:16:10,411 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 03:16:10,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:16:10,507 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 03:16:10,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 03:16:10,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068535770] [2024-10-14 03:16:10,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068535770] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 03:16:10,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592820019] [2024-10-14 03:16:10,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 03:16:10,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 03:16:10,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 03:16:10,511 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 03:16:10,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 03:16:10,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:16:10,613 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-10-14 03:16:10,619 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 03:16:10,875 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 03:16:10,876 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 03:16:11,374 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 03:16:11,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592820019] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 03:16:11,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 03:16:11,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 22 [2024-10-14 03:16:11,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294390929] [2024-10-14 03:16:11,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 03:16:11,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-14 03:16:11,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 03:16:11,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-14 03:16:11,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2024-10-14 03:16:11,383 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 23 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 6 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-14 03:16:11,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 03:16:11,852 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions. [2024-10-14 03:16:11,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-14 03:16:11,853 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 6 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 19 [2024-10-14 03:16:11,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 03:16:11,854 INFO L225 Difference]: With dead ends: 42 [2024-10-14 03:16:11,854 INFO L226 Difference]: Without dead ends: 31 [2024-10-14 03:16:11,855 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=167, Invalid=763, Unknown=0, NotChecked=0, Total=930 [2024-10-14 03:16:11,856 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 23 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 03:16:11,857 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 33 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 03:16:11,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-10-14 03:16:11,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2024-10-14 03:16:11,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 20 states have internal predecessors, (22), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2024-10-14 03:16:11,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2024-10-14 03:16:11,865 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 19 [2024-10-14 03:16:11,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 03:16:11,865 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2024-10-14 03:16:11,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 6 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-14 03:16:11,866 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2024-10-14 03:16:11,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-14 03:16:11,868 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 03:16:11,868 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 03:16:11,884 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-14 03:16:12,069 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 [2024-10-14 03:16:12,069 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_44_to_45_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_44_to_45_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 03:16:12,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 03:16:12,070 INFO L85 PathProgramCache]: Analyzing trace with hash -60655971, now seen corresponding path program 2 times [2024-10-14 03:16:12,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 03:16:12,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895992282] [2024-10-14 03:16:12,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 03:16:12,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 03:16:12,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:16:12,863 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 03:16:12,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:16:13,410 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 03:16:13,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:16:13,776 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 03:16:13,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:16:14,012 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 03:16:14,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:16:14,161 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 03:16:14,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:16:14,256 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-14 03:16:14,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 03:16:14,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895992282] [2024-10-14 03:16:14,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895992282] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 03:16:14,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286359800] [2024-10-14 03:16:14,257 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 03:16:14,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 03:16:14,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 03:16:14,260 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 03:16:14,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 03:16:14,522 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 03:16:14,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 03:16:14,525 INFO L255 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-10-14 03:16:14,529 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 03:16:15,020 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-14 03:16:15,020 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 03:16:41,249 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 03:16:41,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286359800] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 03:16:41,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 03:16:41,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11, 21] total 47 [2024-10-14 03:16:41,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338761703] [2024-10-14 03:16:41,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 03:16:41,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-10-14 03:16:41,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 03:16:41,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-10-14 03:16:41,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=2008, Unknown=6, NotChecked=0, Total=2256 [2024-10-14 03:16:41,254 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 48 states, 36 states have (on average 1.3611111111111112) internal successors, (49), 40 states have internal predecessors, (49), 13 states have call successors, (13), 8 states have call predecessors, (13), 15 states have return successors, (15), 13 states have call predecessors, (15), 12 states have call successors, (15) [2024-10-14 03:16:45,835 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 [] [2024-10-14 03:16:49,841 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-14 03:16:53,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-14 03:16:57,856 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-14 03:17:01,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-14 03:17:05,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-14 03:17:33,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-14 03:17:37,987 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-14 03:17:41,992 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-14 03:17:46,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []