./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_prodbin-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_prodbin-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 5ace794fa35bd3dd49302fe61957917bbb7565f1b1f34293812fc47531868d51 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 21:15:20,462 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 21:15:20,515 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-14 21:15:20,521 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 21:15:20,522 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 21:15:20,543 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 21:15:20,544 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 21:15:20,544 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 21:15:20,544 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 21:15:20,545 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 21:15:20,545 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 21:15:20,545 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 21:15:20,546 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 21:15:20,549 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 21:15:20,549 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 21:15:20,550 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 21:15:20,550 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 21:15:20,550 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 21:15:20,550 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 21:15:20,550 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 21:15:20,550 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 21:15:20,551 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 21:15:20,552 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 21:15:20,552 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 21:15:20,553 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 21:15:20,553 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-14 21:15:20,553 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 21:15:20,553 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 21:15:20,553 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 21:15:20,553 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 21:15:20,554 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 21:15:20,554 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 21:15:20,554 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 21:15:20,554 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 21:15:20,554 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 21:15:20,555 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 21:15:20,555 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 21:15:20,555 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 21:15:20,556 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 21:15:20,556 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 21:15:20,556 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 21:15:20,557 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 21:15:20,557 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 21:15:20,557 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 21:15:20,557 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ace794fa35bd3dd49302fe61957917bbb7565f1b1f34293812fc47531868d51 [2024-10-14 21:15:20,754 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 21:15:20,773 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 21:15:20,776 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 21:15:20,776 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 21:15:20,777 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 21:15:20,778 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_prodbin-ll.c [2024-10-14 21:15:22,203 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 21:15:22,337 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 21:15:22,337 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_prodbin-ll.c [2024-10-14 21:15:22,343 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea14da3b8/4f254bb80ac04e648f97c24803d1829a/FLAG4c5e8fb05 [2024-10-14 21:15:22,761 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea14da3b8/4f254bb80ac04e648f97c24803d1829a [2024-10-14 21:15:22,763 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 21:15:22,765 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 21:15:22,767 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 21:15:22,767 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 21:15:22,771 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 21:15:22,771 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:15:22" (1/1) ... [2024-10-14 21:15:22,773 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32179e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:22, skipping insertion in model container [2024-10-14 21:15:22,774 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:15:22" (1/1) ... [2024-10-14 21:15:22,790 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 21:15:23,064 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 21:15:23,078 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 21:15:23,107 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 21:15:23,123 INFO L204 MainTranslator]: Completed translation [2024-10-14 21:15:23,123 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:23 WrapperNode [2024-10-14 21:15:23,126 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 21:15:23,127 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 21:15:23,128 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 21:15:23,131 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 21:15:23,141 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:23" (1/1) ... [2024-10-14 21:15:23,157 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:23" (1/1) ... [2024-10-14 21:15:23,197 INFO L138 Inliner]: procedures = 16, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 73 [2024-10-14 21:15:23,203 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 21:15:23,204 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 21:15:23,204 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 21:15:23,204 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 21:15:23,224 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:23" (1/1) ... [2024-10-14 21:15:23,228 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:23" (1/1) ... [2024-10-14 21:15:23,231 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:23" (1/1) ... [2024-10-14 21:15:23,276 INFO L175 MemorySlicer]: Split 29 memory accesses to 6 slices as follows [2, 4, 5, 5, 8, 5]. 28 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0]. The 9 writes are split as follows [0, 1, 1, 2, 3, 2]. [2024-10-14 21:15:23,276 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:23" (1/1) ... [2024-10-14 21:15:23,276 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:23" (1/1) ... [2024-10-14 21:15:23,289 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:23" (1/1) ... [2024-10-14 21:15:23,299 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:23" (1/1) ... [2024-10-14 21:15:23,300 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:23" (1/1) ... [2024-10-14 21:15:23,301 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:23" (1/1) ... [2024-10-14 21:15:23,307 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 21:15:23,308 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 21:15:23,308 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 21:15:23,308 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 21:15:23,309 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:23" (1/1) ... [2024-10-14 21:15:23,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 21:15:23,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:15:23,349 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 21:15:23,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 21:15:23,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 21:15:23,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 21:15:23,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 21:15:23,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-14 21:15:23,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-14 21:15:23,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-14 21:15:23,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-14 21:15:23,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-14 21:15:23,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-14 21:15:23,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-14 21:15:23,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-14 21:15:23,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-14 21:15:23,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-14 21:15:23,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-10-14 21:15:23,422 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_0_to_40_0 [2024-10-14 21:15:23,422 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_0_to_40_0 [2024-10-14 21:15:23,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 21:15:23,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 21:15:23,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-14 21:15:23,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-14 21:15:23,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-14 21:15:23,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-14 21:15:23,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-14 21:15:23,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-10-14 21:15:23,423 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-14 21:15:23,423 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-14 21:15:23,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-14 21:15:23,581 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 21:15:23,583 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 21:15:23,890 INFO L? ?]: Removed 38 outVars from TransFormulas that were not future-live. [2024-10-14 21:15:23,890 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 21:15:23,914 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 21:15:23,914 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-14 21:15:23,914 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:15:23 BoogieIcfgContainer [2024-10-14 21:15:23,915 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 21:15:23,916 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 21:15:23,916 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 21:15:23,919 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 21:15:23,919 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:15:22" (1/3) ... [2024-10-14 21:15:23,920 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48314159 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:15:23, skipping insertion in model container [2024-10-14 21:15:23,920 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:23" (2/3) ... [2024-10-14 21:15:23,920 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48314159 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:15:23, skipping insertion in model container [2024-10-14 21:15:23,920 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:15:23" (3/3) ... [2024-10-14 21:15:23,925 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_prodbin-ll.c [2024-10-14 21:15:23,954 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 21:15:23,954 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2024-10-14 21:15:24,026 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 21:15:24,032 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;@7e9be1b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 21:15:24,032 INFO L334 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2024-10-14 21:15:24,035 INFO L276 IsEmpty]: Start isEmpty. Operand has 54 states, 31 states have (on average 1.6774193548387097) internal successors, (52), 48 states have internal predecessors, (52), 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 21:15:24,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-14 21:15:24,039 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:24,040 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:15:24,040 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_0_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 21:15:24,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:24,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1762017656, now seen corresponding path program 1 times [2024-10-14 21:15:24,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:24,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56455736] [2024-10-14 21:15:24,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:24,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:24,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:24,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:15:24,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:24,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56455736] [2024-10-14 21:15:24,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56455736] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:15:24,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:15:24,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 21:15:24,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689136656] [2024-10-14 21:15:24,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:15:24,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 21:15:24,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:24,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 21:15:24,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 21:15:24,274 INFO L87 Difference]: Start difference. First operand has 54 states, 31 states have (on average 1.6774193548387097) internal successors, (52), 48 states have internal predecessors, (52), 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 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 21:15:24,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:24,300 INFO L93 Difference]: Finished difference Result 106 states and 121 transitions. [2024-10-14 21:15:24,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 21:15:24,302 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 7 [2024-10-14 21:15:24,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:24,307 INFO L225 Difference]: With dead ends: 106 [2024-10-14 21:15:24,307 INFO L226 Difference]: Without dead ends: 51 [2024-10-14 21:15:24,310 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 21:15:24,312 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:24,313 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 55 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 21:15:24,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-10-14 21:15:24,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-10-14 21:15:24,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 46 states have internal predecessors, (47), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-14 21:15:24,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2024-10-14 21:15:24,343 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 7 [2024-10-14 21:15:24,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:24,343 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2024-10-14 21:15:24,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 21:15:24,344 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2024-10-14 21:15:24,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-14 21:15:24,344 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:24,344 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:15:24,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 21:15:24,345 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_0_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 21:15:24,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:24,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1704759354, now seen corresponding path program 1 times [2024-10-14 21:15:24,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:24,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301568516] [2024-10-14 21:15:24,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:24,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:24,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 21:15:24,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [60888596] [2024-10-14 21:15:24,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:24,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:15:24,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:15:24,388 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 21:15:24,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 21:15:24,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:24,496 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-10-14 21:15:24,502 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:15:24,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-14 21:15:24,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-14 21:15:24,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2024-10-14 21:15:24,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-14 21:15:24,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2024-10-14 21:15:24,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-14 21:15:24,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-10-14 21:15:24,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-10-14 21:15:24,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:15:24,717 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 21:15:24,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:24,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301568516] [2024-10-14 21:15:24,718 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 21:15:24,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60888596] [2024-10-14 21:15:24,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60888596] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:15:24,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:15:24,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 21:15:24,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851961503] [2024-10-14 21:15:24,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:15:24,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 21:15:24,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:24,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 21:15:24,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-14 21:15:24,721 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand has 8 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 21:15:24,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:24,935 INFO L93 Difference]: Finished difference Result 89 states and 93 transitions. [2024-10-14 21:15:24,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 21:15:24,935 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 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 7 [2024-10-14 21:15:24,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:24,936 INFO L225 Difference]: With dead ends: 89 [2024-10-14 21:15:24,936 INFO L226 Difference]: Without dead ends: 88 [2024-10-14 21:15:24,937 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-14 21:15:24,937 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 72 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:24,938 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 224 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 21:15:24,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-10-14 21:15:24,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 64. [2024-10-14 21:15:24,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 41 states have (on average 1.5609756097560976) internal successors, (64), 57 states have internal predecessors, (64), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-10-14 21:15:24,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 73 transitions. [2024-10-14 21:15:24,946 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 73 transitions. Word has length 7 [2024-10-14 21:15:24,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:24,946 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 73 transitions. [2024-10-14 21:15:24,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 21:15:24,947 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 73 transitions. [2024-10-14 21:15:24,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-14 21:15:24,947 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:24,947 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:15:24,960 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 21:15:25,147 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 21:15:25,148 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_0_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 21:15:25,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:25,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1307932385, now seen corresponding path program 1 times [2024-10-14 21:15:25,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:25,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268716893] [2024-10-14 21:15:25,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:25,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:25,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 21:15:25,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [620508136] [2024-10-14 21:15:25,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:25,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:15:25,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:15:25,174 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 21:15:25,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 21:15:25,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:25,248 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-10-14 21:15:25,250 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:15:25,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-14 21:15:25,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-14 21:15:25,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2024-10-14 21:15:25,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-14 21:15:25,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-10-14 21:15:25,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-14 21:15:25,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-14 21:15:25,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-10-14 21:15:25,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:15:25,405 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 21:15:25,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:25,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268716893] [2024-10-14 21:15:25,406 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 21:15:25,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620508136] [2024-10-14 21:15:25,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620508136] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:15:25,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:15:25,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 21:15:25,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881712272] [2024-10-14 21:15:25,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:15:25,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 21:15:25,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:25,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 21:15:25,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-14 21:15:25,407 INFO L87 Difference]: Start difference. First operand 64 states and 73 transitions. Second operand has 8 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 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) [2024-10-14 21:15:25,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:25,591 INFO L93 Difference]: Finished difference Result 88 states and 92 transitions. [2024-10-14 21:15:25,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 21:15:25,591 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 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 [2024-10-14 21:15:25,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:25,592 INFO L225 Difference]: With dead ends: 88 [2024-10-14 21:15:25,592 INFO L226 Difference]: Without dead ends: 87 [2024-10-14 21:15:25,593 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-14 21:15:25,593 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 69 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:25,594 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 228 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 21:15:25,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-10-14 21:15:25,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 64. [2024-10-14 21:15:25,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 41 states have (on average 1.5365853658536586) internal successors, (63), 57 states have internal predecessors, (63), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-10-14 21:15:25,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2024-10-14 21:15:25,600 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 8 [2024-10-14 21:15:25,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:25,600 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2024-10-14 21:15:25,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 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) [2024-10-14 21:15:25,600 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2024-10-14 21:15:25,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-14 21:15:25,601 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:25,601 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:15:25,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-14 21:15:25,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-10-14 21:15:25,802 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_0_to_40_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 21:15:25,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:25,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1891198232, now seen corresponding path program 1 times [2024-10-14 21:15:25,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:25,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388660229] [2024-10-14 21:15:25,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:25,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:25,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:26,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:15:26,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:26,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388660229] [2024-10-14 21:15:26,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388660229] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:15:26,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:15:26,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 21:15:26,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970186405] [2024-10-14 21:15:26,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:15:26,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 21:15:26,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:26,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 21:15:26,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-14 21:15:26,078 INFO L87 Difference]: Start difference. First operand 64 states and 72 transitions. Second operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 21:15:26,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:26,288 INFO L93 Difference]: Finished difference Result 101 states and 114 transitions. [2024-10-14 21:15:26,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 21:15:26,289 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-10-14 21:15:26,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:26,291 INFO L225 Difference]: With dead ends: 101 [2024-10-14 21:15:26,293 INFO L226 Difference]: Without dead ends: 100 [2024-10-14 21:15:26,294 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 [2024-10-14 21:15:26,294 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 76 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:26,296 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 198 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 21:15:26,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-10-14 21:15:26,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 86. [2024-10-14 21:15:26,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 59 states have (on average 1.5423728813559323) internal successors, (91), 76 states have internal predecessors, (91), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2024-10-14 21:15:26,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 107 transitions. [2024-10-14 21:15:26,315 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 107 transitions. Word has length 9 [2024-10-14 21:15:26,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:26,315 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 107 transitions. [2024-10-14 21:15:26,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 21:15:26,316 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 107 transitions. [2024-10-14 21:15:26,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-14 21:15:26,316 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:26,316 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:15:26,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 21:15:26,317 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_0_to_40_0Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 21:15:26,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:26,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1502396993, now seen corresponding path program 1 times [2024-10-14 21:15:26,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:26,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580487781] [2024-10-14 21:15:26,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:26,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:26,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:26,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:15:26,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:26,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580487781] [2024-10-14 21:15:26,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580487781] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:15:26,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:15:26,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 21:15:26,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455832833] [2024-10-14 21:15:26,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:15:26,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 21:15:26,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:26,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 21:15:26,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-14 21:15:26,586 INFO L87 Difference]: Start difference. First operand 86 states and 107 transitions. Second operand has 7 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 21:15:26,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:26,896 INFO L93 Difference]: Finished difference Result 100 states and 112 transitions. [2024-10-14 21:15:26,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 21:15:26,897 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 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 10 [2024-10-14 21:15:26,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:26,898 INFO L225 Difference]: With dead ends: 100 [2024-10-14 21:15:26,899 INFO L226 Difference]: Without dead ends: 99 [2024-10-14 21:15:26,900 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-14 21:15:26,900 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 67 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:26,901 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 239 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 21:15:26,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-10-14 21:15:26,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 86. [2024-10-14 21:15:26,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 59 states have (on average 1.5084745762711864) internal successors, (89), 76 states have internal predecessors, (89), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2024-10-14 21:15:26,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 105 transitions. [2024-10-14 21:15:26,918 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 105 transitions. Word has length 10 [2024-10-14 21:15:26,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:26,918 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 105 transitions. [2024-10-14 21:15:26,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 21:15:26,918 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 105 transitions. [2024-10-14 21:15:26,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-10-14 21:15:26,918 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:26,919 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:15:26,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 21:15:26,919 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_0_to_40_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 21:15:26,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:26,923 INFO L85 PathProgramCache]: Analyzing trace with hash -670333430, now seen corresponding path program 1 times [2024-10-14 21:15:26,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:26,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716021061] [2024-10-14 21:15:26,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:26,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:26,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 21:15:26,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [138865344] [2024-10-14 21:15:26,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:26,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:15:26,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:15:26,946 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 21:15:26,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 21:15:27,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:27,018 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-10-14 21:15:27,020 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:15:27,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-14 21:15:27,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-14 21:15:27,064 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 11 [2024-10-14 21:15:27,069 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 11 [2024-10-14 21:15:27,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-14 21:15:27,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-14 21:15:27,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-10-14 21:15:27,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-14 21:15:27,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:15:27,265 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 21:15:27,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:27,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716021061] [2024-10-14 21:15:27,266 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 21:15:27,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138865344] [2024-10-14 21:15:27,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138865344] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:15:27,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:15:27,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-14 21:15:27,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649239449] [2024-10-14 21:15:27,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:15:27,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 21:15:27,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:27,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 21:15:27,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-10-14 21:15:27,268 INFO L87 Difference]: Start difference. First operand 86 states and 105 transitions. Second operand has 10 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 21:15:27,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:27,598 INFO L93 Difference]: Finished difference Result 120 states and 142 transitions. [2024-10-14 21:15:27,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-14 21:15:27,598 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 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 11 [2024-10-14 21:15:27,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:27,599 INFO L225 Difference]: With dead ends: 120 [2024-10-14 21:15:27,599 INFO L226 Difference]: Without dead ends: 119 [2024-10-14 21:15:27,599 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2024-10-14 21:15:27,600 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 93 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:27,600 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 280 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 21:15:27,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-10-14 21:15:27,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 103. [2024-10-14 21:15:27,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 74 states have (on average 1.5675675675675675) internal successors, (116), 93 states have internal predecessors, (116), 8 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (12), 7 states have call predecessors, (12), 8 states have call successors, (12) [2024-10-14 21:15:27,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 136 transitions. [2024-10-14 21:15:27,608 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 136 transitions. Word has length 11 [2024-10-14 21:15:27,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:27,609 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 136 transitions. [2024-10-14 21:15:27,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 21:15:27,609 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 136 transitions. [2024-10-14 21:15:27,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-14 21:15:27,609 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:27,609 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:15:27,626 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-14 21:15:27,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:15:27,810 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_0_to_40_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 21:15:27,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:27,811 INFO L85 PathProgramCache]: Analyzing trace with hash 694500195, now seen corresponding path program 1 times [2024-10-14 21:15:27,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:27,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034711904] [2024-10-14 21:15:27,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:27,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:27,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 21:15:27,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [787578287] [2024-10-14 21:15:27,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:27,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:15:27,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:15:27,823 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 21:15:27,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 21:15:27,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:27,892 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-10-14 21:15:27,894 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:15:27,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-14 21:15:27,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-14 21:15:27,901 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 11 [2024-10-14 21:15:27,904 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 11 [2024-10-14 21:15:27,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-14 21:15:27,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-14 21:15:28,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2024-10-14 21:15:28,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-10-14 21:15:28,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:15:28,265 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 21:15:28,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:28,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034711904] [2024-10-14 21:15:28,265 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 21:15:28,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787578287] [2024-10-14 21:15:28,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787578287] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:15:28,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:15:28,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-14 21:15:28,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751626685] [2024-10-14 21:15:28,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:15:28,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 21:15:28,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:28,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 21:15:28,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-14 21:15:28,266 INFO L87 Difference]: Start difference. First operand 103 states and 136 transitions. Second operand has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 21:15:29,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:29,061 INFO L93 Difference]: Finished difference Result 117 states and 139 transitions. [2024-10-14 21:15:29,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-14 21:15:29,062 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 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 12 [2024-10-14 21:15:29,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:29,063 INFO L225 Difference]: With dead ends: 117 [2024-10-14 21:15:29,063 INFO L226 Difference]: Without dead ends: 116 [2024-10-14 21:15:29,063 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2024-10-14 21:15:29,064 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 87 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:29,064 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 235 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-14 21:15:29,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-10-14 21:15:29,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 103. [2024-10-14 21:15:29,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 74 states have (on average 1.554054054054054) internal successors, (115), 93 states have internal predecessors, (115), 8 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (12), 7 states have call predecessors, (12), 8 states have call successors, (12) [2024-10-14 21:15:29,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 135 transitions. [2024-10-14 21:15:29,080 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 135 transitions. Word has length 12 [2024-10-14 21:15:29,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:29,080 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 135 transitions. [2024-10-14 21:15:29,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 21:15:29,080 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 135 transitions. [2024-10-14 21:15:29,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-14 21:15:29,080 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:29,080 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] [2024-10-14 21:15:29,095 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-14 21:15:29,281 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 [2024-10-14 21:15:29,283 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_0_to_40_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 21:15:29,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:29,284 INFO L85 PathProgramCache]: Analyzing trace with hash -332894721, now seen corresponding path program 1 times [2024-10-14 21:15:29,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:29,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571037603] [2024-10-14 21:15:29,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:29,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:29,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:29,560 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 21:15:29,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:29,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:15:29,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:29,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571037603] [2024-10-14 21:15:29,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571037603] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:15:29,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:15:29,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 21:15:29,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160786910] [2024-10-14 21:15:29,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:15:29,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 21:15:29,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:29,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 21:15:29,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 21:15:29,567 INFO L87 Difference]: Start difference. First operand 103 states and 135 transitions. Second operand has 7 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-14 21:15:29,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:29,739 INFO L93 Difference]: Finished difference Result 110 states and 138 transitions. [2024-10-14 21:15:29,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 21:15:29,740 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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 21 [2024-10-14 21:15:29,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:29,740 INFO L225 Difference]: With dead ends: 110 [2024-10-14 21:15:29,741 INFO L226 Difference]: Without dead ends: 109 [2024-10-14 21:15:29,741 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-10-14 21:15:29,741 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 32 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:29,741 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 238 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 21:15:29,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-10-14 21:15:29,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 103. [2024-10-14 21:15:29,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 74 states have (on average 1.5405405405405406) internal successors, (114), 93 states have internal predecessors, (114), 8 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (12), 7 states have call predecessors, (12), 8 states have call successors, (12) [2024-10-14 21:15:29,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 134 transitions. [2024-10-14 21:15:29,748 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 134 transitions. Word has length 21 [2024-10-14 21:15:29,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:29,748 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 134 transitions. [2024-10-14 21:15:29,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-14 21:15:29,748 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 134 transitions. [2024-10-14 21:15:29,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-10-14 21:15:29,749 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:29,749 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] [2024-10-14 21:15:29,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-14 21:15:29,749 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_0_to_40_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 21:15:29,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:29,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1729791771, now seen corresponding path program 1 times [2024-10-14 21:15:29,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:29,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592856088] [2024-10-14 21:15:29,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:29,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:29,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:29,866 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 21:15:29,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:29,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:15:29,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:29,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592856088] [2024-10-14 21:15:29,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592856088] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:15:29,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:15:29,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 21:15:29,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406449596] [2024-10-14 21:15:29,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:15:29,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 21:15:29,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:29,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 21:15:29,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 21:15:29,871 INFO L87 Difference]: Start difference. First operand 103 states and 134 transitions. Second operand has 7 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-14 21:15:29,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:29,947 INFO L93 Difference]: Finished difference Result 115 states and 140 transitions. [2024-10-14 21:15:29,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 21:15:29,947 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 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 22 [2024-10-14 21:15:29,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:29,948 INFO L225 Difference]: With dead ends: 115 [2024-10-14 21:15:29,948 INFO L226 Difference]: Without dead ends: 114 [2024-10-14 21:15:29,949 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-10-14 21:15:29,949 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 43 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:29,949 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 244 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 21:15:29,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-10-14 21:15:29,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 103. [2024-10-14 21:15:29,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 74 states have (on average 1.5135135135135136) internal successors, (112), 93 states have internal predecessors, (112), 8 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (12), 7 states have call predecessors, (12), 8 states have call successors, (12) [2024-10-14 21:15:29,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 132 transitions. [2024-10-14 21:15:29,955 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 132 transitions. Word has length 22 [2024-10-14 21:15:29,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:29,956 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 132 transitions. [2024-10-14 21:15:29,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-14 21:15:29,956 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 132 transitions. [2024-10-14 21:15:29,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-10-14 21:15:29,956 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:29,956 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] [2024-10-14 21:15:29,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-14 21:15:29,957 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_0_to_40_0Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 21:15:29,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:29,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1729801701, now seen corresponding path program 1 times [2024-10-14 21:15:29,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:29,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972731961] [2024-10-14 21:15:29,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:29,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:29,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:30,193 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 21:15:30,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:30,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:15:30,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:30,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972731961] [2024-10-14 21:15:30,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972731961] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:15:30,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:15:30,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 21:15:30,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171758976] [2024-10-14 21:15:30,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:15:30,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 21:15:30,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:30,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 21:15:30,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 21:15:30,200 INFO L87 Difference]: Start difference. First operand 103 states and 132 transitions. Second operand has 7 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-14 21:15:30,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:30,286 INFO L93 Difference]: Finished difference Result 108 states and 135 transitions. [2024-10-14 21:15:30,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 21:15:30,287 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 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 22 [2024-10-14 21:15:30,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:30,288 INFO L225 Difference]: With dead ends: 108 [2024-10-14 21:15:30,288 INFO L226 Difference]: Without dead ends: 107 [2024-10-14 21:15:30,288 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-10-14 21:15:30,288 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 27 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:30,289 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 241 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 21:15:30,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-10-14 21:15:30,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 103. [2024-10-14 21:15:30,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 74 states have (on average 1.5) internal successors, (111), 93 states have internal predecessors, (111), 8 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (12), 7 states have call predecessors, (12), 8 states have call successors, (12) [2024-10-14 21:15:30,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 131 transitions. [2024-10-14 21:15:30,295 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 131 transitions. Word has length 22 [2024-10-14 21:15:30,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:30,295 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 131 transitions. [2024-10-14 21:15:30,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-14 21:15:30,295 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 131 transitions. [2024-10-14 21:15:30,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-14 21:15:30,295 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:30,296 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] [2024-10-14 21:15:30,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-14 21:15:30,296 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 21:15:30,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:30,296 INFO L85 PathProgramCache]: Analyzing trace with hash -2084363227, now seen corresponding path program 1 times [2024-10-14 21:15:30,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:30,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250123016] [2024-10-14 21:15:30,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:30,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:30,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:30,385 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-14 21:15:30,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:30,431 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 21:15:30,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:30,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:15:30,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:30,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250123016] [2024-10-14 21:15:30,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250123016] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:15:30,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:15:30,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-14 21:15:30,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441791621] [2024-10-14 21:15:30,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:15:30,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-14 21:15:30,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:30,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-14 21:15:30,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-10-14 21:15:30,436 INFO L87 Difference]: Start difference. First operand 103 states and 131 transitions. Second operand has 9 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 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) [2024-10-14 21:15:30,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:30,556 INFO L93 Difference]: Finished difference Result 121 states and 149 transitions. [2024-10-14 21:15:30,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 21:15:30,557 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 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 23 [2024-10-14 21:15:30,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:30,557 INFO L225 Difference]: With dead ends: 121 [2024-10-14 21:15:30,557 INFO L226 Difference]: Without dead ends: 114 [2024-10-14 21:15:30,558 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-10-14 21:15:30,558 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 57 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:30,558 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 212 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 21:15:30,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-10-14 21:15:30,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 105. [2024-10-14 21:15:30,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 75 states have (on average 1.48) internal successors, (111), 93 states have internal predecessors, (111), 8 states have call successors, (8), 4 states have call predecessors, (8), 6 states have return successors, (14), 7 states have call predecessors, (14), 8 states have call successors, (14) [2024-10-14 21:15:30,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 133 transitions. [2024-10-14 21:15:30,565 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 133 transitions. Word has length 23 [2024-10-14 21:15:30,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:30,565 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 133 transitions. [2024-10-14 21:15:30,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 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) [2024-10-14 21:15:30,566 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 133 transitions. [2024-10-14 21:15:30,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-14 21:15:30,566 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:30,566 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] [2024-10-14 21:15:30,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-14 21:15:30,566 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_0_to_40_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 21:15:30,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:30,566 INFO L85 PathProgramCache]: Analyzing trace with hash -2083937279, now seen corresponding path program 1 times [2024-10-14 21:15:30,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:30,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687091489] [2024-10-14 21:15:30,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:30,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:30,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:30,703 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 21:15:30,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:30,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:15:30,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:30,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687091489] [2024-10-14 21:15:30,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687091489] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:15:30,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:15:30,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 21:15:30,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085690512] [2024-10-14 21:15:30,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:15:30,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 21:15:30,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:30,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 21:15:30,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 21:15:30,709 INFO L87 Difference]: Start difference. First operand 105 states and 133 transitions. Second operand has 7 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-14 21:15:30,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:30,787 INFO L93 Difference]: Finished difference Result 108 states and 133 transitions. [2024-10-14 21:15:30,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 21:15:30,787 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 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 23 [2024-10-14 21:15:30,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:30,788 INFO L225 Difference]: With dead ends: 108 [2024-10-14 21:15:30,788 INFO L226 Difference]: Without dead ends: 107 [2024-10-14 21:15:30,789 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-10-14 21:15:30,789 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 30 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:30,789 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 251 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 21:15:30,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-10-14 21:15:30,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 105. [2024-10-14 21:15:30,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 75 states have (on average 1.4533333333333334) internal successors, (109), 93 states have internal predecessors, (109), 8 states have call successors, (8), 4 states have call predecessors, (8), 6 states have return successors, (14), 7 states have call predecessors, (14), 8 states have call successors, (14) [2024-10-14 21:15:30,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 131 transitions. [2024-10-14 21:15:30,797 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 131 transitions. Word has length 23 [2024-10-14 21:15:30,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:30,798 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 131 transitions. [2024-10-14 21:15:30,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-14 21:15:30,798 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 131 transitions. [2024-10-14 21:15:30,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-14 21:15:30,798 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:30,799 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] [2024-10-14 21:15:30,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-14 21:15:30,799 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting func_to_recursive_line_0_to_40_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 21:15:30,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:30,799 INFO L85 PathProgramCache]: Analyzing trace with hash -2084245119, now seen corresponding path program 1 times [2024-10-14 21:15:30,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:30,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383045196] [2024-10-14 21:15:30,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:30,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:30,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:30,918 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 21:15:30,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:30,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:15:30,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:30,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383045196] [2024-10-14 21:15:30,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383045196] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:15:30,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:15:30,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 21:15:30,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249010710] [2024-10-14 21:15:30,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:15:30,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 21:15:30,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:30,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 21:15:30,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 21:15:30,922 INFO L87 Difference]: Start difference. First operand 105 states and 131 transitions. Second operand has 7 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-14 21:15:30,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:30,995 INFO L93 Difference]: Finished difference Result 109 states and 131 transitions. [2024-10-14 21:15:30,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 21:15:30,995 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 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 23 [2024-10-14 21:15:30,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:30,996 INFO L225 Difference]: With dead ends: 109 [2024-10-14 21:15:30,996 INFO L226 Difference]: Without dead ends: 108 [2024-10-14 21:15:30,996 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-10-14 21:15:30,997 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 34 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:30,997 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 230 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 21:15:30,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-10-14 21:15:31,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 105. [2024-10-14 21:15:31,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 75 states have (on average 1.44) internal successors, (108), 93 states have internal predecessors, (108), 8 states have call successors, (8), 4 states have call predecessors, (8), 6 states have return successors, (14), 7 states have call predecessors, (14), 8 states have call successors, (14) [2024-10-14 21:15:31,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 130 transitions. [2024-10-14 21:15:31,003 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 130 transitions. Word has length 23 [2024-10-14 21:15:31,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:31,003 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 130 transitions. [2024-10-14 21:15:31,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-14 21:15:31,003 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 130 transitions. [2024-10-14 21:15:31,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-10-14 21:15:31,003 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:31,004 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] [2024-10-14 21:15:31,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-14 21:15:31,004 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting func_to_recursive_line_0_to_40_0Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 21:15:31,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:31,004 INFO L85 PathProgramCache]: Analyzing trace with hash -177546137, now seen corresponding path program 1 times [2024-10-14 21:15:31,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:31,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63057968] [2024-10-14 21:15:31,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:31,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:31,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:31,116 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 21:15:31,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:31,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:15:31,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:31,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63057968] [2024-10-14 21:15:31,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63057968] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:15:31,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:15:31,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 21:15:31,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533583815] [2024-10-14 21:15:31,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:15:31,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 21:15:31,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:31,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 21:15:31,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 21:15:31,127 INFO L87 Difference]: Start difference. First operand 105 states and 130 transitions. Second operand has 7 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-14 21:15:31,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:31,254 INFO L93 Difference]: Finished difference Result 123 states and 140 transitions. [2024-10-14 21:15:31,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 21:15:31,254 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 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 24 [2024-10-14 21:15:31,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:31,256 INFO L225 Difference]: With dead ends: 123 [2024-10-14 21:15:31,256 INFO L226 Difference]: Without dead ends: 122 [2024-10-14 21:15:31,256 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-10-14 21:15:31,256 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 54 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:31,256 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 220 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 21:15:31,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-10-14 21:15:31,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 105. [2024-10-14 21:15:31,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 75 states have (on average 1.4133333333333333) internal successors, (106), 93 states have internal predecessors, (106), 8 states have call successors, (8), 4 states have call predecessors, (8), 6 states have return successors, (14), 7 states have call predecessors, (14), 8 states have call successors, (14) [2024-10-14 21:15:31,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 128 transitions. [2024-10-14 21:15:31,270 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 128 transitions. Word has length 24 [2024-10-14 21:15:31,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:31,270 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 128 transitions. [2024-10-14 21:15:31,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-14 21:15:31,274 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 128 transitions. [2024-10-14 21:15:31,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-10-14 21:15:31,275 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:31,275 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] [2024-10-14 21:15:31,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-14 21:15:31,275 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting func_to_recursive_line_0_to_40_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 21:15:31,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:31,275 INFO L85 PathProgramCache]: Analyzing trace with hash -187089187, now seen corresponding path program 1 times [2024-10-14 21:15:31,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:31,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192890924] [2024-10-14 21:15:31,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:31,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:31,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:31,411 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 21:15:31,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:31,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:15:31,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:31,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192890924] [2024-10-14 21:15:31,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192890924] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:15:31,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:15:31,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 21:15:31,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102397855] [2024-10-14 21:15:31,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:15:31,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 21:15:31,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:31,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 21:15:31,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 21:15:31,416 INFO L87 Difference]: Start difference. First operand 105 states and 128 transitions. Second operand has 7 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-14 21:15:31,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:31,494 INFO L93 Difference]: Finished difference Result 108 states and 128 transitions. [2024-10-14 21:15:31,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 21:15:31,495 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 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 24 [2024-10-14 21:15:31,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:31,496 INFO L225 Difference]: With dead ends: 108 [2024-10-14 21:15:31,496 INFO L226 Difference]: Without dead ends: 107 [2024-10-14 21:15:31,496 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-10-14 21:15:31,497 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 31 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:31,499 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 233 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 21:15:31,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-10-14 21:15:31,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 105. [2024-10-14 21:15:31,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 75 states have (on average 1.4) internal successors, (105), 93 states have internal predecessors, (105), 8 states have call successors, (8), 4 states have call predecessors, (8), 6 states have return successors, (14), 7 states have call predecessors, (14), 8 states have call successors, (14) [2024-10-14 21:15:31,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 127 transitions. [2024-10-14 21:15:31,507 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 127 transitions. Word has length 24 [2024-10-14 21:15:31,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:31,507 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 127 transitions. [2024-10-14 21:15:31,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-14 21:15:31,507 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 127 transitions. [2024-10-14 21:15:31,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-14 21:15:31,507 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:31,507 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] [2024-10-14 21:15:31,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-14 21:15:31,508 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting func_to_recursive_line_0_to_40_0Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 21:15:31,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:31,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1208962877, now seen corresponding path program 1 times [2024-10-14 21:15:31,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:31,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623508521] [2024-10-14 21:15:31,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:31,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:31,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:31,667 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 21:15:31,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:31,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:15:31,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:31,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623508521] [2024-10-14 21:15:31,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623508521] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:15:31,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:15:31,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-14 21:15:31,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615986618] [2024-10-14 21:15:31,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:15:31,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 21:15:31,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:31,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 21:15:31,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-14 21:15:31,673 INFO L87 Difference]: Start difference. First operand 105 states and 127 transitions. Second operand has 8 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-14 21:15:31,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:15:31,765 INFO L93 Difference]: Finished difference Result 122 states and 137 transitions. [2024-10-14 21:15:31,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 21:15:31,765 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 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 25 [2024-10-14 21:15:31,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:15:31,766 INFO L225 Difference]: With dead ends: 122 [2024-10-14 21:15:31,767 INFO L226 Difference]: Without dead ends: 121 [2024-10-14 21:15:31,767 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-10-14 21:15:31,767 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 52 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 21:15:31,768 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 223 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 21:15:31,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-10-14 21:15:31,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 105. [2024-10-14 21:15:31,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 75 states have (on average 1.3733333333333333) internal successors, (103), 93 states have internal predecessors, (103), 8 states have call successors, (8), 4 states have call predecessors, (8), 6 states have return successors, (14), 7 states have call predecessors, (14), 8 states have call successors, (14) [2024-10-14 21:15:31,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 125 transitions. [2024-10-14 21:15:31,776 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 125 transitions. Word has length 25 [2024-10-14 21:15:31,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:15:31,776 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 125 transitions. [2024-10-14 21:15:31,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-14 21:15:31,776 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 125 transitions. [2024-10-14 21:15:31,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-14 21:15:31,776 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:15:31,776 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] [2024-10-14 21:15:31,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-14 21:15:31,777 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting func_to_recursive_line_0_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 21:15:31,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:15:31,777 INFO L85 PathProgramCache]: Analyzing trace with hash -83275088, now seen corresponding path program 1 times [2024-10-14 21:15:31,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:15:31,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723066210] [2024-10-14 21:15:31,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:31,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:15:31,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 21:15:31,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1962182779] [2024-10-14 21:15:31,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:15:31,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:15:31,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:15:31,805 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 21:15:31,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 21:15:31,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:15:31,900 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 75 conjuncts are in the unsatisfiable core [2024-10-14 21:15:31,903 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:15:31,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-14 21:15:31,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-14 21:15:31,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2024-10-14 21:15:31,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-14 21:15:31,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2024-10-14 21:15:31,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-14 21:15:32,209 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 27 treesize of output 15 [2024-10-14 21:15:32,269 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 42 treesize of output 22 [2024-10-14 21:15:32,355 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 28 treesize of output 16 [2024-10-14 21:15:32,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-10-14 21:15:32,383 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:15:32,383 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 21:15:33,690 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:15:33,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:15:33,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723066210] [2024-10-14 21:15:33,691 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 21:15:33,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962182779] [2024-10-14 21:15:33,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962182779] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 21:15:33,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 21:15:33,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 28 [2024-10-14 21:15:33,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986615310] [2024-10-14 21:15:33,692 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 21:15:33,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-10-14 21:15:33,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:15:33,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-10-14 21:15:33,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=689, Unknown=0, NotChecked=0, Total=812 [2024-10-14 21:15:33,693 INFO L87 Difference]: Start difference. First operand 105 states and 125 transitions. Second operand has 29 states, 26 states have (on average 1.9230769230769231) internal successors, (50), 25 states have internal predecessors, (50), 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) [2024-10-14 21:15:37,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-14 21:15:42,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-14 21:15:46,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-14 21:15:50,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-10-14 21:15:54,789 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-14 21:15:58,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-14 21:16:03,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-14 21:16:07,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-10-14 21:16:11,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-14 21:16:15,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-10-14 21:16:19,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-14 21:16:24,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-10-14 21:16:28,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-10-14 21:16:32,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-14 21:16:36,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-10-14 21:16:36,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:16:36,100 INFO L93 Difference]: Finished difference Result 155 states and 171 transitions. [2024-10-14 21:16:36,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-14 21:16:36,123 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 1.9230769230769231) internal successors, (50), 25 states have internal predecessors, (50), 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 29 [2024-10-14 21:16:36,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:16:36,124 INFO L225 Difference]: With dead ends: 155 [2024-10-14 21:16:36,124 INFO L226 Difference]: Without dead ends: 154 [2024-10-14 21:16:36,125 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=329, Invalid=1651, Unknown=0, NotChecked=0, Total=1980 [2024-10-14 21:16:36,125 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 289 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 28 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 61.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 61.6s IncrementalHoareTripleChecker+Time [2024-10-14 21:16:36,125 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 452 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 670 Invalid, 15 Unknown, 0 Unchecked, 61.6s Time] [2024-10-14 21:16:36,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2024-10-14 21:16:36,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 122. [2024-10-14 21:16:36,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 89 states have (on average 1.348314606741573) internal successors, (120), 107 states have internal predecessors, (120), 9 states have call successors, (9), 6 states have call predecessors, (9), 8 states have return successors, (15), 8 states have call predecessors, (15), 9 states have call successors, (15) [2024-10-14 21:16:36,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 144 transitions. [2024-10-14 21:16:36,133 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 144 transitions. Word has length 29 [2024-10-14 21:16:36,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:16:36,133 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 144 transitions. [2024-10-14 21:16:36,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 1.9230769230769231) internal successors, (50), 25 states have internal predecessors, (50), 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) [2024-10-14 21:16:36,133 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 144 transitions. [2024-10-14 21:16:36,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-14 21:16:36,134 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:16:36,134 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] [2024-10-14 21:16:36,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-14 21:16:36,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-14 21:16:36,337 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting func_to_recursive_line_0_to_40_0Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 21:16:36,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:16:36,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1448317153, now seen corresponding path program 1 times [2024-10-14 21:16:36,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:16:36,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830733986] [2024-10-14 21:16:36,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:16:36,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:16:36,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:36,569 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 21:16:36,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:36,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:16:36,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:16:36,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830733986] [2024-10-14 21:16:36,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830733986] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:16:36,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:16:36,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-14 21:16:36,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291592825] [2024-10-14 21:16:36,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:16:36,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-14 21:16:36,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:16:36,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-14 21:16:36,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-14 21:16:36,574 INFO L87 Difference]: Start difference. First operand 122 states and 144 transitions. Second operand has 9 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-14 21:16:36,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:16:36,729 INFO L93 Difference]: Finished difference Result 135 states and 164 transitions. [2024-10-14 21:16:36,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-14 21:16:36,729 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), 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 28 [2024-10-14 21:16:36,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:16:36,730 INFO L225 Difference]: With dead ends: 135 [2024-10-14 21:16:36,730 INFO L226 Difference]: Without dead ends: 133 [2024-10-14 21:16:36,730 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-10-14 21:16:36,730 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 63 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 21:16:36,731 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 195 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 21:16:36,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-10-14 21:16:36,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 120. [2024-10-14 21:16:36,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 89 states have (on average 1.3146067415730338) internal successors, (117), 105 states have internal predecessors, (117), 9 states have call successors, (9), 6 states have call predecessors, (9), 8 states have return successors, (15), 8 states have call predecessors, (15), 9 states have call successors, (15) [2024-10-14 21:16:36,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 141 transitions. [2024-10-14 21:16:36,741 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 141 transitions. Word has length 28 [2024-10-14 21:16:36,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:16:36,742 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 141 transitions. [2024-10-14 21:16:36,742 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), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-14 21:16:36,742 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 141 transitions. [2024-10-14 21:16:36,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-10-14 21:16:36,743 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:16:36,743 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] [2024-10-14 21:16:36,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-14 21:16:36,743 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting func_to_recursive_line_0_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-14 21:16:36,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:16:36,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1713439605, now seen corresponding path program 1 times [2024-10-14 21:16:36,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:16:36,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109223193] [2024-10-14 21:16:36,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:16:36,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:16:36,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 21:16:36,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [357780285] [2024-10-14 21:16:36,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:16:36,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:16:36,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:16:36,764 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 21:16:36,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-14 21:16:36,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:16:36,852 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-10-14 21:16:36,854 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:16:36,876 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 11 [2024-10-14 21:16:36,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-14 21:16:36,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-10-14 21:16:36,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-14 21:16:53,496 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 [2024-10-14 21:16:53,629 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 42 treesize of output 22 [2024-10-14 21:16:53,856 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 24 treesize of output 12 [2024-10-14 21:16:53,882 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 26 treesize of output 14 [2024-10-14 21:16:53,992 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:16:53,992 INFO L311 TraceCheckSpWp]: Computing backward predicates...